Kent-Andre Mardal
Adjunct Chief Research Scientist
- Department
- Numerical Analysis and Scientific Computing
- Organisation
- Simula Research Laboratory

- kent-and@simula.no
Publications
2023
Journal Articles
T. Koch, V. Vinje and K. Mardal
Estimates for the astrocyte endfoot sheath permeability of the extra-cellular pathway
Fluids and Barriers of the CNS
V. Vinje, B. Zapf, G. Ringstad, P. K. Eide, M. E. Rognes and K. Mardal
Human brain solute transport quantified by glymphatic MRI-informed biophysics during sleep and sleep deprivation
Fluids and Barriers of the Central Nervous System
J. E. Schreiner, U. Kessler, K. J. Oedegaard, K. Mardal and L. Oltedal
Exploring New Electroencephalogram Parameters in Electroconvulsive Therapy
The Journal of ECT
T. Koch, V. Vinje and K. Mardal
Estimates for the astrocyte endfoot sheath permeability of the extra-cellular pathway
biorxiv
V. Vinje, B. Zapf, G. Ringstad, P. K. Eide, M. E. Rognes and K. Mardal
Human brain solute transport quantified by glymphatic MRI-informed biophysics during sleep and sleep deprivation
bioRxiv
L. Bojarskaite, A. Vallet, D. M. Bjørnstad, K. M. G. Binder, C. Cunen, K. Heuser, M. Kuchta, K. Mardal and R. Enger
Sleep cycle-dependent vascular dynamics in male mice and the predicted effects on perivascular cerebrospinal fluid flow and solute transport
Nature Communications
A. Budisa, X. Hu, M. Kuchta, K. Mardal and L. T. Zikatanov
Algebraic multigrid methods for metric-perturbed coupled problems
SIAM J. Sci. Comput.
K. Mardal
notifi tests
Global conf
B. Gomez-Vargas, K. Mardal, R. Ruiz-Baier and V. Vinje
Twofold saddle-point formulation of Biot poroelasticity with stress-dependent diffusion
SIAM J. of Numerical Analysis
Proceedings, refereed
A. Budisa, X. Hu, M. Kuchta, K. Mardal and L. T. Zikatanov
Rational approximation preconditioners for multiphysics problems
Numerical Methods and Applications (NMA 2022)
2022
Books
K. Mardal, M. E. Rognes, T. B. Thompson and L. M. Valnes
Mathematical modeling of the human brain: from magnetic resonance images to finite element simulation
Simula SpringerBriefs on Computing
Journal Articles
Q. Hong, J. Kraus, M. Kuchta, M. Lymbery, K. Mardal and M. E. Rognes
Robust approximation of generalized Biot-Brinkman problems
Journal on Scientific Computing
B. Gomez-Vargas, K. Mardal, R. Ruiz-Baier and V. Vinje
Twofold saddle-point formulation of Biot poroelasticity with stress-dependent diffusion
arXiv
A. Budisa, X. Hu, M. Kuchta, K. Mardal and L. T. Zikatanov
HAZniCS – Software Components for Multiphysics Problems
ACM Transactions on Mathematical Software
M. Kuchta, S. G. Wubshet, N. K. Afseth, K. Mardal and K. H. Liland
Encoder–decoder neural networks for predicting future
Journal of Biophotonics
L. Bojarskaite, D. M. Bjørnstad, A. Vallet, K. M. G. Binder, C. Cunen, K. Heuser, M. Kuchta, K. Mardal and R. Enger
Sleep cycle-dependent vascular dynamics enhance perivascular cerebrospinal fluid flow and solute transport
bioRxiv
K. Mardal, J. Sogn and S. Takacs
Robust Preconditioning and Error Estimates for Optimal Control of the Convection--Diffusion--Reaction Equation with Limited Observation in Isogeometric Analysis
SIAM Journal on Numerical Analysis
M. Hornkjøl, L. M. Valnes, G. A. Ringstad, M. E. Rognes, P. K. Eide, K. Mardal and V. Vinje
CSF circulation and dispersion yield rapid clearance from intracranial compartments
Frontiers in Bioengineering and Biotechnology
J. Schreiner and K. Mardal
Simulating epileptic seizures using the bidomain model
Scientific Reports
W. M. Boon, M. Hornkjøl, M. Kuchta, K. Mardal and R. Ruiz-Baier
Parameter-robust methods for the Biot–Stokes interfacial coupling without Lagrange multipliers
Journal of Computational Physics
T. Bohr, P. G. Hjorth, S. C. Holst, S. Hrabětová, V. Kiviniemi, T. Lilius, I. Lundgaard, K. Mardal, E. A. Martens, Y. Mori, V. Nägerl, C. Nicholson, A. Tannenbaum, J. H. Thomas, J. Tithof, H. Benveniste, J. J. Iliff, D. H. Kelley and M. Nedergaard
The glymphatic system: Current understanding and modeling
iScience
B. Zapf, J. Haubner, M. Kuchta, G. Ringstad, P. K. Eide and K. Mardal
Investigating molecular transport in the human brain from MRI with physics-informed neural networks
Scientific Reports
W. M. Boon, T. Koch, M. Kuchta and K. Mardal
Robust Monolithic Solvers for the Stokes--Darcy Problem with the Darcy Equation in Primal Form
SIAM Journal on Scientific Computing
Talks, contributed
M. Kuchta, W. M. Boon, T. Koch, K. Mardal and R. Ruiz-Baier
Parameter-robust monolithic solvers for coupled Biot/Darcy-Stokes models
27th International Domain Decomposition Conference, DD27
C. Daversin-Catty, V. Vinje, I. Gjerde, K. Mardal and M. E. Rognes
Modeling fluid flow in perivascular networks
ECCOMAS22, Oslo (Norway)
Talks, invited
M. Kuchta
Parameter-robust monolithic solvers for Stokes-Darcy/Biot systems
The 8th European Congress on Computational Methods in Applied Sciences and Engineering (ECCOMAS), Oslo, Norway
M. Kuchta, W. M. Boon, K. E. Holter, M. Hornkjøl, T. Koch, K. Mardal and R. Ruiz-Baier
Fractional operators in coupled multiphysics problems with implicit coupling
Numerical Solution of Fractional Differential Equations and Applications NSFDE&A’22
M. Kuchta, W. M. Boon, M. Hornkjøl, T. Koch, K. Mardal and R. Ruiz-Baier
Parameter-robust Methods for Biot-Stokes and Darcy-Stokes Interfacial Coupling without Lagrange Multipliers
15th World Congress on Computation Mechanics
M. Kuchta, A. Budisa, X. Hu, L. T. Zikatanov and K. Mardal
Fractional Laplacians and Hybridized DG
Simula's Workshop on computational mechanics models on domains of heterogeneous dimensionality, Split, Croatia
2021
Book Chapters
A. J. Ellingsrud, C. Daversin-Catty and M. E. Rognes
A cell-based model for ionic electrodiffusion in excitable tissue
Modeling Excitable Tissue: The EMI Framework
K. H. Jæger, K. G. Hustad, X. Cai and A. Tveito
Operator Splitting and Finite Difference Schemes for Solving the EMI Model
Modeling Excitable Tissue: The EMI Framework
K. H. Jæger and A. Tveito
Derivation of a Cell-Based Mathematical Model of Excitable Cells
Modeling Excitable Tissue: The EMI Framework
Å. Telle, S. Wall and J. Sundnes
Modeling Cardiac Mechanics on a Sub-Cellular Scale
Modeling Excitable Tissue: The EMI Framework
M. Kuchta and K. Mardal
Iterative Solvers for EMI Models
Modeling Excitable Tissue: The EMI Framework
A. P. Buccino, M. Kuchta, J. Schreiner and K. Mardal
Improving Neural Simulations with the EMI Model
Modeling Excitable Tissue: The EMI Framework
M. Kuchta, K. Mardal and M. E. Rognes
Solving the EMI Equations using Finite Element Methods
Modeling Excitable Tissue: The EMI Framework
Edited books
Modeling Excitable Tissue: The EMI Framework
Journal Articles
E. Piersanti, J. J. Lee, K. Mardal, M. E. Rognes and T. Thompson
Parameter robust preconditioning by congruence for multiple-network poroelasticity
SIAM Journal of Scientific Computing
K. Mardal, M. E. Rognes and T. Thompson
Accurate discretization of poroelasticity without Darcy stability – Stokes-Biot revisited
BIT Numerical Mathematics
M. Kuchta, F. Laurino, K. Mardal and P. Zunino
Analysis and approximation of mixed-dimensional PDEs on 3D-1D domains coupled with Lagrange multipliers
SIAM Journal on Numerical Analysis
P. K. Eide, V. Vinje, A. H. Pripp, K. Mardal and G. A. Ringstad
Sleep deprivation impairs molecular clearance from the human brain
Brain
W. M. Boon, M. Kuchta, K. Mardal and R. Ruiz-Baier
Robust Preconditioners for Perturbed Saddle-Point Problems and Conservative Discretizations of Biot's Equations Utilizing Total Pressure
SIAM Journal on Scientific Computing
P. K. Eide, L. M. Valnes, E. K. Lindstrøm, K. Mardal and G. Ringstad
Direction and magnitude of cerebrospinal fluid flow vary substantially across central nervous system diseases
Fluids and Barriers of the CNS
B. A. Young, J. Adams, J. M. Beary, K. Mardal, R. Schneider and T. Kondrashova
Variations in the cerebrospinal fluid dynamics of the American alligator (Alligator mississippiensis)
Fluids and Barriers of the CNS
Proceedings, refereed
E. Piersanti, M. E. Rognes and K. Mardal
Parameter robust preconditioning for multi-compartmental Darcy equations
Numerical Mathematics and Advanced Applications ENUMATH 2019
Talks, invited
C. Daversin-Catty, I. Gjerde, K. Mardal, M. E. Rognes and V. Vinje
Modeling fluid flow in perivascular networks
Oslo glymphatics symposium, Oslo (Norway)
2020
Journal Articles
K. E. Holter, M. Kuchta and K. Mardal
Robust preconditioning of monolithically coupled multiphysics problems
arXiv preprint arXiv:2001.05527
A. H. Erhardt, K. Mardal and J. Schreiner
Dynamics of a neuron–glia system: the occurrence of seizures and the influence of electroconvulsive stimuli: A mathematical and numerical study
Journal of computational neuroscience
T. Landet, K. Mardal and M. Mortensen
Slope limiting the velocity field in a discontinuous Galerkin divergence-free two-phase flow solver
Computers & Fluids
K. E. Holter, M. Kuchta and K. Mardal
Robust preconditioning for coupled Stokes–Darcy problems with the Darcy problem in primal form
Computers & Mathematics with Applications
W. M. Boon, M. Kuchta, K. Mardal and R. Ruiz-Baier
Robust preconditioners for perturbed saddle-point problems and conservative discretizations of Biot's equations utilizing total pressure
arXiv preprint arXiv:2011.05236
T. Bærland, M. Kuchta, K. Mardal and T. Thompson
An observation on the uniform preconditioners for the mixed Darcy problem
Numerical Methods for Partial Differential Equations
L. M. Valnes, S. Mitusch, G. Ringstad, P. K. Eide, S. W. Funke and K. Mardal
Apparent diffusion coefficient estimates based on 24 hours tracer movement support glymphatic transport in human cerebral cortex
Scientific Reports
V. Vinje, A. Eklund, K. Mardal, M. E. Rognes and K. Støverud
Intracranial pressure elevation alters CSF clearance pathways
Fluids and Barriers of the CNS
C. Daversin-Catty, V. Vinje, K. Mardal and M. E. Rognes
The mechanisms behind perivascular fluid flow
PLOS ONE
2019
Books
H. P. Langtangen and K. Mardal
Introduction to Numerical Methods for Variational Problems
Journal Articles
V. Vinje, G. A. Ringstad, E. K. Lindstrøm, L. M. Valnes, M. E. Rognes, P. K. Eide and K. Mardal
Respiratory influence on cerebrospinal fluid flow – a computational study based on long-term intracranial pressure measurements
Scientific Reports
J. Lee, E. Piersanti, K. Mardal and M. E. Rognes
A mixed finite element method for nearly incompressible multiple-network poroelasticity
SIAM Journal on Scientific Computing
T. Bærland, M. Kuchta and K. Mardal
Multigrid Methods for Discrete Fractional Sobolev Spaces
SIAM Journal on Scientific Computing
A. P. Buccino, M. Kuchta, K. H. Jæger, T. V. Ness, P. Berthet, K. Mardal, G. Cauwenberghs and A. Tveito
How does the presence of neural probes affect extracellular potentials?
Journal of Neural Engineering
P. K. Eide, L. M. Valnes, A. H. Pripp, K. Mardal and G. Ringstad
Delayed clearance of cerebrospinal fluid tracer from choroid plexus in idiopathic normal pressure hydrocephalus
Journal of Cerebral Blood Flow & Metabolism
T. Gergelits, K. Mardal, B. F. Nielsen and Z. Strakoš
Laplacian Preconditioning of Elliptic PDEs: Localization of the Eigenvalues of the Discretized Operator
SIAM Journal on Numerical Analysis
E. K. Lindstrøm, G. Ringstad, A. Sorteberg, W. Sorteberg, K. Mardal and P. K. Eide
Magnitude and direction of aqueductal cerebrospinal fluid flow: large variations in patients with intracranial aneurysms with or without a previous subarachnoid hemorrhage
Acta neurochirurgica
D. S. Seljebotn, T. Bærland, H. K. Eriksen, K. Mardal and I. K. Wehus
Multi-resolution Bayesian CMB component separation through Wiener filtering with a pseudo-inverse preconditioner
Astronomy & Astrophysics
M. Kuchta, K. Mardal and M. Mortensen
Preconditioning trace coupled 3D-1D systems using fractional Laplacian
Numerical Methods for Partial Differential Equations
M. Kuchta, K. Mardal and M. Mortensen
On the singular Neumann problem in linear elasticity
Numerical Linear Algebra with Applications
Miscellaneous
T. Bærland, M. Kuchta, K. Mardal and T. Thompson
An Observation On The Uniform Preconditioners For The Mixed Darcy Problem
Talks, contributed
M. Kuchta and K. Mardal
Robust preconditioners for multiphysics problems involving porous flow in physiology modeling
ICIAM 2019, Valencia, Spain
K. Mardal
Mathematical modeling of the g - lymphatic system – preconditioning of Darcy - Stokes systems
Biomechanics of living systems, Tøyen hovedgård, Norway
Proceedings, refereed
K. E. Holter, M. Kuchta and K. Mardal
Sub-voxel Perfusion Modeling in Terms of Coupled 3d-1d Problem
Numerical Mathematics and Advanced Applications ENUMATH 2017
Talks, keynote
M. Kuchta and K. Mardal
Robust Preconditioners for Multiscale Systems in Biomechanics
12th International Conference on Large-Scale Scientific Computations, Sozopol, Bulgaria
Talks, invited
V. Vinje, K. Støverud, M. E. Rognes, K. Mardal and A. Eklund
Intracranial pressure elevation alters CSF clearance pathways
The 2019 CSF Symposium, Oslo, Norway
K. Mardal
Preconditioning of multi-physics problems with applications to the biomechanics of the brain
MOX, Milan, Italy
K. Mardal
Mathematical modeling of the glymphatic system
ICIAM, Valencia, Spain
K. Mardal
Parameter Identification of Brain Cleaning
ICIAM, Valencia, Spain
K. Mardal
Mathematical modeling of the g-lymphatic system – preconditioning of Darcy - Stokes systems
IMG 2019, Kunming, China
K. Mardal
Preconditioning with some application to brain modeling
Symposium on the occasion of Ragnar Winther's 70th birthday, Oslo, Norway
2018
Journal Articles
P. K. Eide, A. Sorteberg, W. Sorteberg, E. K. Lindstrøm, K. Mardal and G. Ringstad
“Bucket” cerebrospinal fluid bulk flow: when the terrain disagrees with the map
Acta Neurochirurgica
E. K. Lindstrøm, G. Ringstad, A. Sorteberg, W. Sorteberg, K. Mardal and P. K. Eide
Magnitude and direction of aqueductal cerebrospinal fluid flow: large variations in patients with intracranial aneurysms with or without a previous subarachnoid hemorrhage
Acta Neurochirurgica
E. K. Lindstrøm, J. Schreiner, G. Ringstad, V. Haughton, P. K. Eide and K. Mardal
Comparison of phase-contrast MR and flow simulations for the study of CSF dynamics in the cervical spine
The Neuroradiology Journal
S. W. Funke, M. Nordaas, Ø. Evju, M. S. Alnæs and K. Mardal
Variational data assimilation for transient blood flow simulations
International Journal for Numerical Methods in Biomedical Engineering
V. Vinje
Fluid dynamics in syringomyelia cavities: Effects of heart rate, CSF velocity, CSF velocity waveform and craniovertebral decompression
The Neuroradiology Journal
G. Ringstad, L. M. Valnes, A. M. Dale, A. H. Pripp, S. S. Vatnehol, K. E. Emblem, K. Mardal and P. K. Eide
Brain-wide glymphatic enhancement and clearance in humans assessed with MRI
JCI insight
E. K. Lindstrøm, G. Ringstad, K. Mardal and P. K. Eide
Cerebrospinal fluid volumetric net flow rate and direction in idiopathic normal pressure hydrocephalus
NeuroImage: Clinical
K. Valen-Sendstad, A. Bergersen, Y. Shimogonya, L. Goubergrits, J. Bruening, J. Pallares, S. Cito, S. Piskin, K. Pekkan, A. J. Geers, I. Larrabide, S. Rapaka, V. Mihalef, W. Fu, A. Qiao, K. Jain, S. Roller, K. Mardal, R. Kamakoti, T. Spirka, N. Ashton, A. Revell, N. Aristokleous, G. Houston, M. Tsuji, F. Ishida, P. G. Menon, L. D. Browne, S. Broderick, M. Shojima, S. Koizumi, M. Barbour, A. Aliseda, H. G. Morales, T. Lefèvre, S. Hodis, Y. M. Al-Smadi, J. S. Tran, A. L. Marsden, S. Vaippummadhom, A. Einstein, A. G. Brown, K. Debus, K. Niizuma, S. Rashad, S. Sugiyama, O. M. Khan, A. R. Updegrove, S. C. Shadden, B. M. W. Cornelissen, C. B. L. M. Majoie, P. Ber, S. Saalfield, K. Kono and D. A. Steinmam
Real-World Variability in the Prediction of Intracranial Aneurysm Wall Shear Stress: The 2015 International Aneurysm CFD Challenge
Cardiovascular Engineering and Technology
Posters
V. Vinje
Respiratory influence on intracranial pressure gradients and aqueductal flow in normal pressure hydrocephalus
Talks, contributed
V. Vinje, J. Brucker, M. E. Rognes, K. Mardal and V. Haughton
Fluid dynamics in syringomyelia cavities
Vancouver, Canada
V. Vinje, G. A. Ringstad, M. E. Rognes, P. K. Eide and K. Mardal
The Influence of Breathing on Cerebrospinal Fluid Movement in the Brain
Glasgow, United Kingdom
T. Thompson and M. E. Rognes
A Stokes-Biot Stable H(div)-based mixed method for generalized poroelasticity
SIAM Life Sciences 2018, Minneapolis, Minnesota, USA
Talks, keynote
K. Mardal
Mathematical modeling of the glymphatic system – the physics of Alzheimer’s disease ?
Mathematical models in health sciences, Nantes, France
K. Mardal
Mathematical modeling of the glymphatic system – the physics of Alzheimer’s disease?
INdAM, Rome, Italy
Talks, invited
E. Piersanti, J. J. Lee, K. Mardal and M. E. Rognes
Parameter-robust discretization and preconditioning of multiple-network poroelasticity equations
University of Oxford, UK
E. Piersanti, J. J. Lee, K. Mardal and M. E. Rognes
Parameter-robust discretization and preconditioning of multiple-network poroelasticity equations
Glasgow, UK
K. Mardal
Preconditioners for PDE constrained optimization problems (coarse observations, boundary control)
SIAM ALA, Hong Kong, China
2017
Journal Articles
G. Pizzichelli, B. Kehlet, Ø. Evju, B. Martin, M. E. Rognes, K. Mardal and E. Sinibaldi
Numerical study of intrathecal drug delivery to a permeable spinal cord: effect of catheter position and angle
Computer Methods in Biomechanics and Biomedical Engineering
J. Lee, K. Mardal and R. Winther
Parameter-robust discretization and preconditioning of Biot's consolidation model
SIAM Journal of Scientific Computing
P. T. Haga, G. Pizzichelli, M. Mortensen, M. Kuchta, S. H. Pahlavian, E. Sinibaldi, B. A. Martin and K. Mardal
A numerical investigation of intrathecal isobaric drug dispersion within the cervical subarachnoid space
PLoS ONE
G. Ringstad, E. Lindstrøm, S. A. Vatnehol, K. Mardal, K. Emblem and P. K. Eide
Non-invasive Assessment of Pulsatile Intracranial Pressure with Phase-Contrast Magnetic Resonance Imaging
PLoS ONE
A. Tveito, K. H. Jæger, M. Kuchta, K. Mardal and M. E. Rognes
A cell-based framework for numerical modelling of electrical conduction in cardiac tissue
Frontiers in Physics, Computational Physics
K. E. Holter, B. Kehlet, A. Devor, T. J. Sejnowski, A. M. Dale, S. W. Omholt, O. P. Ottesen, E. A. Nagelhus, K. Mardal and K. H. Pettersen
Interstitial Solute Transport in 3D Reconstructed Neuropil Occurs by Diffusion Rather than Bulk Flow
Proceedings of the National Academy of Sciences
Ø. Evju, J. M. Pozo, A. Frangi and K. Mardal
Robustness of common hemodynamic indicators with respect to numerical resolution in 38 middle cerebral artery aneurysms.
PLoS ONE
Talks, contributed
E. Piersanti, J. J. Lee, K. Mardal and M. E. Rognes
Modelling pulsatility in the context of Normal-Pressure Hydrocephalus via multiple-network poroelasticity
5th International Conference on Computational and Mathematical Biomedical Engineering, Pittsburgh, US
Talks, keynote
K. Mardal, E. K. Lindstrøm and V. Haughton
Physics of oscillatory CSF Flow
ASSR, San Diego, USA
K. Mardal
Computational modeling of the glymphatic system: how is waste cleared from the brain?
Interpore 2017, Rotterdam, the Netherlands
K. Mardal
Computational modeling of the glymphatic system: how is waste cleared from the brain?
HPCSE 2017, Ostrava, Czech Republic
K. Mardal
The operator preconditioning framework with various applications to interstitial fluid flow and the aging human brain
Enumath, Voss, Norway
Talks, invited
V. Vinje, M. E. Rognes, K. Mardal and E. Piersanti
The Brain as a Poroelastic Medium - Simulating pulsatile motion and flow
Hamburg, Germany
K. Mardal
Coupling CSF flow, perfusion and glymphatics (?)
2nd Workshop on computational aspects of perfusion and flow in live tissue, Bergen, Norway
K. Mardal
Biographical note on biomedical applications
International Conference on Computational Science and Engineering, Oslo, Norway
K. Mardal
Blood flow in cerebral aneurysms, water flow clearance in Alzheimer and operator preconditioning
Prague, Czech Republic
K. Mardal, V. Frostlid, A. Jensen and K. Jain
Experimental investigation of transitional effects at low Reynolds number in blood vessels - X-ray, microphones and simulations
CMBE 2017, Pittsburgh, USA
K. Mardal, K. E. Holter and K. H. Pettersen
Simulating the fluid flow of the lymphatic system - extracellular fluid flow
The 4th CSF symposium, Atlanta, USA
V. Vinje
Is Respiration the main driver of CSF Flow?
International Convention Center, Kobe, Japan
2016
Book Chapters
W. Bradley, V. Haughton and K. Mardal
Cerebrospinal fluid flow in adults.
Handbook of clinical neurology
Journal Articles
M. Kuchta, M. Nordaas, J. C. G. Verschaeve, M. Mortensen and K. Mardal
Preconditioners for saddle point systems with trace constraints coupling 2D and 1D domains
SIAM Journal of Scientific Computing
K. Støverud, H. P. Langtangen, G. A. Ringstad, P. K. Eide and K. Mardal
Computational Investigation of Cerebrospinal Fluid Dynamics in the Posterior Cranial Fossa and Cervical Subarachnoid Space in Patients with Chiari I Malformation
PLOS ONE
K. Mardal, B. F. Nielsen and M. Nordaas
Robust preconditioners for PDE-constrained optimization with limited observations
BIT Numerical Mathematics
K. Jain, G. Ringstad, P. Eide and K. Mardal
Direct numerical simulations of transitional hydrodynamics of the cerebrospinal fluid in Chiari I malformation – the role of cranio-vertebral junction
International Journal for Numerical Methods in Biomedical Engineering
K. Jain, J. Jiang, C. Strother and K. Mardal
Transitional hemodynamics in intracranial aneurysms - Comparative velocity investigations with high resolution Lattice Boltzmann simulations, normal resolution ANSYS simulations and MR imaging
Medical Physics
R. Fric, E. K. Lindstrøm, G. Ringstad, K. Mardal and P. K. Eide
Association of pulse pressure gradient across cranio-cervical junction as derived from phase-contrast magnetic resonance imaging and invasively measured pulsatile intracranial pressure in symptomatic patients with Chiari malformation type 1
Acta Neurochirurgica
Talks, contributed
J. J. Lee, K. Mardal, E. Piersanti and M. E. Rognes
Modelling and simulation of viscous and poroelastic fluid flow in the brain
FEniCS16, Simula Research Laboratory
J. J. Lee, K. Mardal, E. Piersanti and M. E. Rognes
On accurate and efficient simulations of multiple-network poroelastic modelling with applications to interstitial fluid flow in the human brain
WCCM XII & APCOM VI, Seoul
V. Vinje, K. Mardal, V. Haughton and M. E. Rognes
Simulating Cerebrospinal Fluid Flow and Spinal Cord Movement Associated with Syringomyelia
Chalmers Institute of Technology
M. Kuchta
Solving singular problems. The right way.
FEniCS'16 Workshop, Simula Research Laboratory, Oslo, Norway
Talks, invited
K. Mardal
Overview of the modeling of water flow in and surrounding the central nervous system
Istituto Italiano di Tecnologia, Piza, Italy
K. Mardal
Brain & Water:computational modeling of the aging brain
MedViz conference, Bergen
K. Mardal, S. W. Funke, M. Nordaas, Ø. Evju and M. S. Alnæs
Variational data assimilation for blood flow simulations
MS at SIAM UQ, Zurich
K. Mardal, Ø. Evju, J. Soler and A. Frangi
Robustness of common hemodynamics indicators with respect to numerical resolution in 38 middle cerebral artery aneurysms
MS at WCCM16, Seoul
K. Mardal, V. Frostlid and A. Jensen
Experimental investigation of transitional effects at low Reynolds number in blood vessels: X-ray, Microphones and Simulations
EarthFlows Workshop, UiO, Oslo
K. Mardal
Poroelastic modeling of the central nervous system: Chiari and dementia
Workshop on modeling of flow in live tissue: Methodological interaction between geo and life-sciences, CMR, Fantoft, Bergen
2015
Book Chapters
Ø. Evju and K. Mardal
On the Assumption of Laminar Flow in Physiological Flows: Cerebral Aneurysms As an Illustrative Example
Modeling the Heart and the Circulatory System
Journal Articles
M. S. Alnæs, K. Mardal, S. J. Bakke and A. Sorteberg
Computational fluid dynamics evaluation of flow reversal treatment of giant basilar tip aneurysm
Interventional Neuroradiology
K. Støverud, M. S. Alnæs, H. P. Langtangen, V. Haughton and K. Mardal
Poro-elastic modeling of Syringomyelia – a systematic study of the effects of pia mater, central canal, median fissure, white and gray matter on pressure wave propagation and fluid movement within the cervical spinal cord
Computer Methods in Biomechanics and Biomedical Engineering
K. Jain, S. Roller and K. Mardal
Transitional flow in intracranial aneurysms–a space and time refinement study below the Kolmogorov scales using Lattice Boltzmann Method
Computers & Fluids
Talks, contributed
M. Nordaas, K. Mardal and B. F. Nielsen
Robust preconditioners for PDE-constrained optmization with limited data
2015 SIAM CSE, Salt Lake City
K. Mardal
Computational modelling of the biomechanics in the central nervous system – Chiari and syringomyelia
Simula Research Laboratory, Oslo
N. Kylstad, K. Mardal, V. Haughton and M. E. Rognes
Effect of Spinal Cord Viscoelasticity on Its Response to CSF Pressure Waves: a Computational Study
ASNR 53rd Annual Meeting & The Foundation of the ASNR Symposium 2015, April 25 – 30, Chicago, Illinois
Proceedings, refereed
M. Mortensen, M. Kuchta, K. Mardal and J. Verschaeve
BEND|P|Y: Python framework for computing bending of complex plate-beam systems
MekIT'15 8th National Conference on Computational Mechanics
K. Jain and K. Mardal
Exploring The Critical Reynolds Number For Transition In Intracranial Aneurysms–highly Resolved Simulations Below Kolmogorov Scales
4th International Conference on Computational and Mathematical Biomedical Engineering - CMBE2015
M. Kuchta, K. Mardal and M. Mortensen
Characterization of the space of rigid motions in arbitrary domains
MekIT'15 8th National Conference on Computational Mechanics
Talks, invited
K. Mardal
Computational modelling of the biomechanics in the central nervous system – Chiari and syringomyelia
Simpla meeting, Oslo
K. Mardal
Poroelastic modeling of Syringomyelia - the effects of pia mater, central canal, median fissure, white and grey matter on pressure wave propagation and fluid movement within the cervical spinal cord
International Hydrocephalus Imaging Working Group, Chicago
V. Haughton and K. Mardal
Role of CSF flow in the pathogenesis of Syringomyelia
ASNR 53rd Annual Meeting & The Foundation of the ASNR Symposium 2015, April 25 – 30, 2015; Chicago, Illinois
K. Mardal, K. Jain, K. Støverud, G. Ringstad and P. K. Eide
On the complexity of the Cerebrospinal fluid flow in the upper spinal column – is the assumption of laminar flow appropriate?
Cerebrospinal Fluid Dynamics Society Meeting, Amiens
K. Mardal
Computational modelling of the biomechanics in the central nervous system – Chiari and syringomyelia
Complex materials; Mathematical models and numerical methods, Oslo
K. Mardal
Flows in complex geometries such as blood vessels and the central nervous system
EarthFlows kick-off meeting, Oslo
2014
Journal Articles
V. Haughton and K. Mardal
Spinal Fluid Biomechanics and Imaging: an Update for Neuroradiologists
American Journal of Neuroradiology
S. Linge, K. Mardal, A. Helgeland, J. Heiss and V. Haughton
Effect of Cranio-Vertebral Decompression on CSF Dynamics in Chiari I Malformation Studied With Computational Fluid Dynamics
Journal of Neurosurgery
A. Helgeland, K. Mardal, V. Haughton and B. A. P. Reif
Numerical Simulations of the Pulsating Flow of Cerebrospinal Fluid Flow in the Cervical Spinal Canal of a Chiari Patient
Journal of Biomechanics
D. S. Seljebotn, K. Mardal, J. Jewell, H. K. Eriksen and P. Bull
A Multilevel Solver for Gaussian Constrained CMB Realizations
The Astrophysical Journal Supplement Series
Talks, keynote
K. Mardal
On the Modeling of the Central Nervous System in Chiari Patients - Transitional Flow, Poroelasticity and Porous-Viscus Flow Couplings
Gordon Conference on Flow & Transport in Permeable Media
M. Mortensen
Preliminary study of the impact of spinal cord nerve roots and denticulate ligaments on drug movement in the cervical spinal subarachnoid space
21 July, Barcelona, Spain
Talks, invited
K. Mardal, T. Seland, H. P. Langtangen and P. Røtnes
Er Zombier En Trussel Mot Menneskeheten?
Upop aften - Det norske student samfund
K. Mardal
On the Assumption of Laminar Flow in the Modeling of Physiological Flow
Anvendt og beregningsorientert matematikk, Bergen
K. Mardal, A. Helgeland, V. Haughton, B. A. P. Reif and K. Støverud
On the Assumption of Laminar Flow of CSF in Chiari Patients
international Chiari Research Group
K. Mardal, K. Støverud, G. Ringstad and P. K. Eide
CSF Flow at Foramen Magnum
International Hydrocephalus Imaging Working Group,Montreal, Canada
K. Mardal, O. M. Khan and K. Valen-Sendstad
On Numerical Methods for Transitional Flow - Application to Blood Flow in Aneurysms
Quality and Validation of Computational Cardio-vascular Biomechanics, WCCM-ECCM-ECCOM
K. Mardal, K. Støverud, M. Mortensen, K. Jain, B. Martin and S. Pahlavian
Cerebrospinal Fluid Flow in Association With the Central Nervous System - Chiari and Drug Delivery
MS on Computational Biomechanics, WCCM-ECCM-ECCOM
2013
Book Chapters
H. P. Langtangen, K. Mardal and P. Røtnes
Escaping the Zombie Threat by Mathematics
Zombies in the Academy: Living Death in Higher Education
Edited books
A. Logg, K. Mardal and A. Massing
Proceedings of the 26th Nordic Seminar on Computational Machanics
Journal Articles
S. Linge, K. Mardal, V. Haughton and A. Helgeland
Simulating CSF Flow Dynamics in the Normal and the Chiari I Subarachnoid Space During Rest and Exertion
American Journal of Neuroradiology
B. F. Nielsen and K. Mardal
Analysis of the Minimal Residual Method Applied to Ill-Posed Optimality Systems
SIAM Journal on Scientific Computing
K. Mardal, J. Schoberl and R. Winther
A Uniformly Stable Fortin Operator for the Taylor-Hood Element
Numerische Mathematik
K. Mardal, G. Rutkowska, S. Linge and V. Haughton
Estimation of CSF Flow Resistance in the Upper Cervical Spine
The Neuroradiology Journal
K. Støverud, H. P. Langtangen, V. Haughton and K. Mardal
CSF Pressure and Velocity in Obstructions of the Subarachnoid Spaces
The Neuroradiology Journal
I. N. Drøsdal, K. Mardal, K. Støverud and V. Haughton
Effect of the Central Canal in the Spinal Cord on Fluid Movement Within the Cord
The Neuroradiology Journal
Ø. Evju, K. Valen-Sendstad and K. Mardal
A Study of Wall Shear Stress in 12 Aneurysms With Respect to Different Viscosity Models and Flow Conditions
Journal of Biomechanics
K. Valen-Sendstad, K. Mardal and D. A. Steinman
High-Resolution Computational Fluid Dynamics Detects High-Frequency Velocity Fluctuations in Bifurcation, But Not Sidewall, Aneurysms of the Middle Cerebral Artery
Journal of Biomechanics
Manuals
K. Mardal and H. P. Langtangen
Combining FEniCS With Your Favorite Software in C, C++, Fortran, Or MATLAB
Talks, contributed
Ø. Evju, K. Mardal, S. J. Bakke and A. G. Sorteberg
Patient-Specific Simulations of Vasospasm in 3 Different Cases
Modelling Physiological Flows
Proceedings, refereed
M. Kuchta and M. Mortensen
A Second Order Fast Sweeping Method for the Eikonal Equation Based on Minimization
The Nordic Seminar on Computational Mechanics
K. Støverud, K. Mardal and H. P. Langtangen
Effect of Oscillatory Cerebrospinal Fluid Pressure on Fluid Movement in the Spinal Cord
Seventh National Conference on Computational Mechanics (MekIT'13)
S. Claus, A. Massing and E. Burman
A Stabilized Nitsche Fictitious Domain Formulation for the Three-Field Stokes Problem
The 26th Nordic Seminar on Computational Mechanics
M. Mortensen, K. Mardal, B. Martin and S. Pahlavian
Preliminary Study of the Impact of Spinal Cord Nerve Roots and Denticulate Ligaments on Drug Movement in the Cervical Spinal Subarachnoid Space
The Nordic Seminar on Computational Mechanics
Talks, keynote
K. Mardal
Operator Preconditioning for Well-Posed and Ill-Posed Problems
Preconditioning 2013
K. Mardal
On the Assumption of Laminar Flow in the Modeling of Physiological Flow
Modelling of physiological flows (MPF 2013)
Talks, invited
K. Mardal and B. F. Nielsen
Efficient Preconditioning of Optimality Systems With Non-Self-Adjoint State Operators
IFIP 2013, minisymposia Preconditioning for PDE-Constrained Optimization, Linz, Austria
Technical reports
D. S. Seljebotn, K. Mardal, J. Jewell, H. K. Eriksen and P. Bull
A Multilevel Solver for Gaussian Constrained CMB Realizations
2012
Book Chapters
R. C. Kirby and K. Mardal
Constructing General Reference Finite Elements
Automated Solution of Differential Equations by the Finite Element Method
R. C. Kirby and A. Logg
FErari: an Optimizing Compiler for Variational Forms
Automated Solution of Differential Equations by the Finite Element Method
I. Wilbers, K. Mardal and M. S. Alnæs
Instant: Just-in-Time Compilation of C/C++ in Python
Automated Solution of Differential Equations by the Finite Element Method
M. S. Alnæs, A. Logg and K. Mardal
UFC: a Finite Element Code Generation Interface
Automated Solution of Differential Equations by the Finite Element Method
S. Støle-Hentschel, S. Linge, A. E. Løvgren and K. Mardal
Cerebrospinal Fluid Flow
Automated Solution of Differential Equations by the Finite Element Method
K. Selim
An Adaptive Finite Element Solver for Fluid-structure Interaction Problems
Automated Solution of Differential Equations by the Finite Element Method
J. E. Hake and K. Mardal
Lessons Learned in Mixed Language Programming
Automated Solution of Differential Equations by the Finite Element Method
L. Vynnytska, S. Clark and M. E. Rognes
Dynamic Simulations of Convection in the Earth's Mantle
Automated Solution of Differential Equations by the Finite Element Method
R. C. Kirby and A. Logg
Finite Element Variational Forms
Automated Solution of Differential Equations by the Finite Element Method
M. S. Alnæs
UFL: a Finite Element Form Language
Automated Solution of Differential Equations by the Finite Element Method
J. E. Hake
A Coupled Stochastic and Deterministic Model of Ca2+ Dynamics in the Dyadic Cleft
Automated Solution of Differential Equations by the Finite Element Method
A. Logg, G. N. Wells and J. E. Hake
DOLFIN: a C++/Python Finite Element Library
Automated Solution of Differential Equations by the Finite Element Method
R. C. Kirby, A. Logg, M. E. Rognes and A. R. Terrel
Common and Unusual Finite Elements
Automated Solution of Differential Equations by the Finite Element Method
A. Logg, K. Mardal and G. N. Wells
Finite Element Assembly
Automated Solution of Differential Equations by the Finite Element Method
R. C. Kirby and A. Logg
Tensor Representation of Finite Element Variational Forms
Automated Solution of Differential Equations by the Finite Element Method
R. C. Kirby, M. G. Knepley, A. Logg, R. Scott and A. R. Terrel
Discrete Optimization of Finite Element Matrix Evaluation
Automated Solution of Differential Equations by the Finite Element Method
M. S. Alnæs and K. Mardal
SyFi and SFC: Symbolic Finite Elements and Form Compilation
Automated Solution of Differential Equations by the Finite Element Method
M. Mortensen, K. Mardal and H. P. Langtangen
Simulation of Transitional Flows
Automated Solution of Differential Equations by the Finite Element Method
M. E. Rognes
Automated Testing of Saddle Point Stability Conditions
Automated Solution of Differential Equations by the Finite Element Method
K. Valen-Sendstad, A. Logg, K. Mardal, H. Narayanan and M. Mortensen
A Comparison of Some Common Finite Element Schemes for the Incompressible Navier-Stokes Equations
Automated Solution of Differential Equations by the Finite Element Method
K. Valen-Sendstad, K. Mardal and A. Logg
Computational Hemodynamics
Automated Solution of Differential Equations by the Finite Element Method
H. P. Langtangen
A FEniCS Tutorial
Automated Solution of Differential Equations by the Finite Element Method
R. C. Kirby and A. Logg
The Finite Element Method
Automated Solution of Differential Equations by the Finite Element Method
A. Logg, K. B. Ølgaard, M. E. Rognes and G. N. Wells
FFC: the FEniCS Form Compiler
Automated Solution of Differential Equations by the Finite Element Method
H. Narayanan
A Computational Framework for Nonlinear Elasticity
Automated Solution of Differential Equations by the Finite Element Method
K. Mardal and J. B. Haga
Block Preconditioning of Systems of PDEs
Automated Solution of Differential Equations by the Finite Element Method
Edited books
A. Logg, K. Mardal and G. N. Wells
Automated Solution of Differential Equations by the Finite Element Method
Journal Articles
G. Rutkowska, V. Haughton, S. Linge and K. Mardal
Patient-Specific 3D Simulation of Cyclic CSF Flow at the Cranio-Cervical Region
American Journal of Neuroradiology
Posters
K. Valen-Sendstad, K. Mardal and D. A. Steinman
Revisiting 'Turbulence' in Cerebral Aneurysms
Ø. Evju, K. Mardal and K. Valen-Sendstad
On Non-Newtonian Effects in Cerebral Aneurysms: a Computational Study on 12 Patient Specific Aneurysms
Talks, contributed
K. Mardal, B. F. Nielsen and M. S. Alnæs
Efficient Preconditioning of Optimality Systems
EMG 2012
K. Mardal
On Well-Posedness and Stability
CBC Seminar series
K. Mardal, H. P. Langtangen and P. Røtnes
Are Zombies a Threat to Mankind?
Invited talk for the opening of RF kjelleren at the University of Oslo
K. Mardal and H. P. Langtangen
Will FEniCS Fly?
FEniCS 12 workshop
K. Mardal
The Finite Element Library FEniCS + Blood Flow Simulations in Cerebral Aneurysms
Marsden's lab at UCSD
K. Mardal
The Finite Element Library FEniCS
Steinman's lab, University of Toronto
K. Støverud, V. Haughton, H. P. Langtangen and K. Mardal
CSF Flow Dynamics: Effects of Viscosity and Inertia
ANSR 2012, New York
B. F. Nielsen and K. Mardal
The Minimal Residual Method Applied to Ill-Posed Optimality Systems; Eigenvalues and Convergence Properties
Numerical Methods for Optimal Control and Inverse Problems workshop, Munich, Germany
Ø. Evju, K. Valen-Sendstad and K. Mardal
Non-Newtonian Effects in Cerebral Aneurysms. a Computational Study on 12 Patient Specific Aneurysms
ICS '12
Talks, invited
K. Mardal
Blood Flow in Cerebral Aneurysms - Can Turbulence Be a Risk Indicator?
SDU workshop
Technical reports
K. Mardal, J. Schoberl and R. Winther
A Uniform Inf-Sup Condition With Applications to Preconditioning
2011
Book Chapters
K. Mardal and R. Winther
Construction of Preconditioners by Mapping Properties for Systems of Partial Differential Equations
Efficient preconditioning methods for elliptic partial differential equations
Journal Articles
K. Valen-Sendstad, K. Mardal, J. Isaksen and M. Mortensen
A Quantitative Characterization of Differences in Flow Patterns in Ruptured Versus Unruptured MCA Aneurysms
journal
S. Linge, V. Haughton, A. E. Løvgren, K. Mardal, A. Helgeland and H. P. Langtangen
Effect of Tonsilar Herniation on Cyclic CSF Flow Studied With Computational Flow Analysis
American Journal of Neuroradiology
J. Jiang, K. Johnson, K. Valen-Sendstad, K. Mardal, O. Wieben and C. Strother
Flow Characteristics in a Canine Aneurysm Model: A Comparison of 4-D Accelerated Phase-Contrast MR Measurements and Computational Fluid Dynamics Simulations
Medical Physics
K. Støverud, K. Mardal, V. Haughton and H. P. Langtangen
CSF Flow in Chiari I and Syringomyelia From the Perspective of Computational Fluid Dynamics
The Neuroradiology Journal
K. Valen-Sendstad, K. Mardal, M. Mortensen, B. A. P. Reif and H. P. Langtangen
Direct Numerical Simulation of Transitional Flow in a Patient-Specific Intracranial Aneurysm
Journal of Biomechanics
T. K. Nilssen, G. A. Staff and K. Mardal
Order Optimal Preconditioners for Fully Implicit Runge-Kutta Schemes Applied to the Bidomain Equations
Numerical Methods for Partial Differential Equations
K. Mardal and R. Winther
Preconditioning Discretizations of Systems of Partial Differential Equations
Numerical Linear Algebra with Applications
Talks, contributed
K. Mardal
On the Construction of Preconditioners for Systems of PDEs
SIAM Conference on Computational Science and Engineering, MS2
K. Valen-Sendstad, K. Mardal, M. Mortensen, B. A. P. Reif and H. P. Langtangen
Why Blood Flow in the Vicinity of Aneurysms Is Difficult to Compute
Talk at CBC Workshop on CBC Key Topics
K. Valen-Sendstad, K. Mardal, M. Mortensen, B. A. P. Reif and H. P. Langtangen
Direct Numerical Simulation of Transitional Flow in Patient-Specific Intracranial Aneurysms
ASME 2011 Summer Bioengineering Conference
K. Valen-Sendstad, K. Mardal, M. Mortensen, B. A. P. Reif and H. P. Langtangen
Computational Cerebral Hemodynamics
The Norwegian Defence Research Establishment
K. Mardal and B. F. Nielsen
Efficient Preconditioning of Optimality Systems
Precond 11
K. Valen-Sendstad, K. Mardal, M. Mortensen, B. A. P. Reif and H. P. Langtangen
Simulation Methodology for Cerebral Blood Flow
Biomedical Simulation Lab, Institute of Biomaterials and Biomedical Engineering at the University of Toronto
K. Valen-Sendstad, K. Mardal, M. Mortensen, H. P. Langtangen, B. A. P. Reif and D. A. Steinman
'Turbulence' in Cerebral Aneurysms
CBC Workshop on Biomechanics, 17-18 November
Proceedings, refereed
S. Linge, K. Mardal, V. Haughton and A. Helgeland
Cerebrospinal Fluid Flow Characteristics at Double Heart Rate
Neuroradiology, 53 (Suppl. 1), S33, 35th European Soc of Neuroradiology ann. meeting, Antwerpen, Belgium
I. N. Drøsdal, V. Haughton, K. Mardal and K. Støverud
Porous and Viscous Flow Modeling on the Study of Cyst Development in the Human Spinal Cord
8th International Conference on CFD in Oil & Gas, Metallurgical and Process Industries
K. Støverud, K. Mardal, H. P. Langtangen and V. Haughton
The Effect of Varying Cross-Sectional Areas on Cerebrospinal Fluid Flow and Pressure in the Cervical Spine
MekIT'11. Sixth national conference on Computational Mechanics
S. Linge, V. Haughton, A. E. Løvgren, K. Mardal, A. Helgeland, H. P. Langtangen and K. Støverud
Cyclic Cerebrospinal Fluid Flow (I): Towards the Understanding of Cerebrospinal Fluid Flow Dynamics in Chiari I Malformation
ASNR 49th Annual Meeting & the Foundation of the ASNR Symposium, June 4 - 9, 2011.
K. Valen-Sendstad, K. Mardal, M. Mortensen, B. A. P. Reif and H. P. Langtangen
On the Complexity of Stationary Flow in Patient-Specific Aneurysms
MekIT'11 Sixth national conference on Computational Mechanics
K. Valen-Sendstad, M. Mortensen, K. Mardal, B. A. P. Reif and H. P. Langtangen
Investigations of Transistional Flows Using Image Based Hemodynamics
8th International Conference on CFD in Oil & Gas, Metallurgical and Process Industries
Talks, invited
K. Mardal, K. Støverud, V. Haughton, S. Linge, H. P. Langtangen, G. Rutkowska and I. N. Drøsdal
Cerebrospinal Fluid Flow in the Upper Cervical Canal in Patients With the Chiari I Malformation
1ST CSF Hydrodynamics Symposium
K. Mardal
FEniCS: an Attempt to Combine Simplicity, Generality, Efficiency and Reliability
Python-based Software for Solving Partial Differential Equations Minisymposium at SIAM Conference on Computational Science and Engineering
K. Mardal, K. Valen-Sendstad and Ø. Evju
Simulating Blood Flow in Cerebral Aneurysm
Minisymposium Numerical Methods for Biomedical Problems on Enumath
K. Mardal, K. Valen-Sendstad, M. S. Aln æs, M. Mortensen, H. P. Langtangen and B. A. P. Reif
The Finite Element Library FEniCS and Simulation of Blood Flow in Cerebral Aneurysms
Talk at CSB Seminar, University of Stuttgart
2010
Book Chapters
A. Schroll
Automatic Calibration of Depositional Models
Automated Scientific Computing
Proceedings, non-refereed
K. Støverud, K. Mardal, V. Haughton and H. P. Langtangen
CSF Flow in Chiari I and Syringomyelia - From the Perspective of Fluid Dynamics
Proceedings of the XIX Symposium Neuroradiologicum, Bologna, Italy
Journal Articles
M. Burger, K. Mardal and B. F. Nielsen
Stability Analysis of the Inverse Transmembrane Potential Problem in Electrocardiography
Inverse Problems
H. Lindekleiv, K. Valen-Sendstad, M. K. Morgan, K. Mardal, K. Faulder, J. Magnus, K. Waterloo, B. Romner and T. Ingebrigtsen
Sex Differences in Intracranial Arterial Bifurcations
Gender Medicine
B. F. Nielsen and K. Mardal
Efficient Preconditioners for Optimality Systems Arising in Connection With Inverse Problems
SIAM Journal on Control and Optimization
M. S. Alnæs and K. Mardal
On the Efficiency of Symbolic Computations Combined With Code Generation for Finite Element Methods
ACM Transactions on Mathematical Software
S. Hentschel, K. Mardal, A. E. Løvgren, S. Linge and V. Haughton
Characterization of Cyclical CSF Flow in the Foramen Magnum and Upper Cervical Spinal Canal With MR Flow Imaging and Computational Fluid Dynamics
American Journal of Neuroradiology
Talks, contributed
K. Mardal, H. P. Langtangen and P. Røtnes
Is Zombies a Threat to Mankind?
Talk presented at FEniCS 2010
A. Blechingberg, K. Mardal, F. Strisland, J. Sundnes, T. O. Rognum, Å. Vege, M. Weensvangen and A. Stray-Pedersen
The Baby Justicia Project: Biomechanical Investigations of the Shaken Baby Syndrome (SBS)
WCB2010, Seminar session, Head/Brain Injury - Models
K. Mardal and B. F. Nielsen
An Operator Theoretical Approach to Preconditioning Optimality Systems
Talk at European Multi-Grid Conference, EMG, 2010
K. Støverud, K. Mardal, V. Haughton and H. P. Langtangen
Cerebrospinal Fluid (CSF) - Oscillating Flow and Pressure
CBC Workshop on Aerosols: Dispersion, Transport and Effects, Simula, November 10
K. Støverud, K. Mardal, V. Haughton and H. P. Langtangen
Cerebrospinal Fluid (CSF) - Oscillating Flow and Pressure
Selected Topics Seminar IWS Stuttgart
K. Støverud, K. Mardal, V. Haughton and H. P. Langtangen
CSF Hydrodynamic in Patients With Syringomyelia and Chiari I Malformations
Annual NUPUS meeting in Freudenstadt
K. Mardal
CSF Strømning I Forbindelse Med Chiari Malformasjon Og Syringomyelia
CBC Workshop on Clinical Issues Related to the Cerebrospinal Fluid
K. Støverud, K. Mardal and H. P. Langtangen
From a Physical Problem to Computer Simulations
CBC Workshop on Cerebrospinal Fluid Flow in the Brain and Spinal Canal - Clinical, Experimental and Mathematical Models and Problems, Simula, May 28
Proceedings, refereed
J. Jiang, K. Johnson, K. Valen-Sendstad, K. Mardal, D. Consigny, O. Wieben and C. Strother
Comparison of Aneurismal Hemodynamics Between 4D Accelerated Phase-Contrast MR Angiography and Computational Fluid Dynamics Simulations: Initial Experience in a Canine Aneurysm Model
Proceedings of the ASME 2010 Summer Bioengineering Conference
2009
Book Chapters
B. F. Nielsen, O. M. Lysaker, P. Grøttum, K. Mardal, A. Tveito, C. Tarrou, K. Haugaa, A. Abildgaard and J. G. Fjeld
Can ECG Recordings and Mathematics Tell the Condition of Your Heart?
Simula Research Laboratory - by thinking constantly about it
Journal Articles
T. K. Karper, K. Mardal and R. Winther
Unified Finite Element Discretizations of Coupled Darcy-Stokes Flow
Numerical Methods for Partial Differential Equations
M. S. Alnæs, A. Logg, K. Mardal, O. Skavhaug and H. P. Langtangen
Unified Framework for Finite Element Assembly
International Journal of Computational Science and Engineering
S. Linge, V. Haughton, A. E. Løvgren, K. Mardal and H. P. Langtangen
CSF Flow Dynamics at the Cranio-Vertebral Junction Studied With an Idealized Model of the Subarachnoid Space and Computational Flow Analysis
American Journal of Neuroradiology
Talks, contributed
S. Linge, A. E. Løvgren, K. Mardal, V. Haughton and H. P. Langtangen
Cerebrospinal Fluid Flow Investigations With Modelling and Simulation
invited talk at The Chiari Institute, 14th of January, New York, U.S.A.
S. Linge, A. E. Løvgren, K. Mardal, V. Haughton and H. P. Langtangen
Simulating Normal and Abnormal CSF Flow With Idealized Geometries
talk, seminar on cerebrospinal fluid flow, 16th of January, University of Wisconsin, U.S.A.
K. Valen-Sendstad, M. Mortensen, H. P. Langtangen, B. A. P. Reif and K. Mardal
Implementing a K-E Turbulence Model in the FEniCS Finite Element Programming Environment
Talk at MekIT'09: Fifth National Conference on Computational Mechanics, Trondheim, May 26-27
S. Linge, A. E. Løvgren, K. Mardal, V. Haughton and H. P. Langtangen
Tonsilar Herniation - How Is the CSF Flow Influenced?
Invited talk at Rikshospitalet University Hospital, Oslo, Norway, 5th of June
K. Mardal, A. Helgeland, S. Hentschel, H. P. Langtangen, A. Logg, S. Linge, A. E. Løvgren and K. Valen-Sendstad
Some Biomedical Applications at Simula
Talk at the CBC Workshop on Computational Biology with UMB
B. F. Nielsen and K. Mardal
An Operator Theoretical Approach to Preconditioning Optimality Systems
Presented at the Applied Inverse Problems conference, Vienna, Austria
K. Mardal, S. Hentschel, A. Helgeland, H. P. Langtangen, S. Linge, A. E. Løvgren, A. Logg and K. Valen-Sendstad
Patient-Specific Simulations of Stroke and Syringomyelia
Talk : Advisory commitee meeting FFI project P1112 Aerosols: Dispersion, Transport and Consequences, Nov 03
K. Mardal, V. Haughton, S. Hentschel, H. P. Langtangen, S. Linge, A. E. Løvgren and K. Valen-Sendstad
CSF Flow Modelling
Invited talk at CSR Flow Research Conference at University of Wisconsin, Nov 9
K. Valen-Sendstad, K. Mardal and A. Logg
Simulation Methodology for Bioflows
Talk : Advisory commitee meeting FFI project P1112 Aerosols: Dispersion, Transport and Consequences, May 05
K. Mardal, S. Hentschel, A. Logg and K. Valen-Sendstad
Patient-Specific Hemodynamics in FEniCS
Invited talk at the minisymposium on Computational Vascular and Cardiovascular Mechanics at USNCCM 2009
K. Mardal, A. Logg, S. Hentschel, O. C. Myklebust and K. Valen-Sendstad
Patient-Specific Hemodynamics in FEniCS
Presentation at the FEniCS 09 Workshop
K. Mardal, S. Hentschel, A. Logg and K. Valen-Sendstad
Cerebral Blood Flow
Invited talk at Telemark College, Engineering Faculty, Porsgrunn, Norway, 2009
Proceedings, refereed
K. Valen-Sendstad, M. Mortensen, H. P. Langtangen, B. A. P. Reif and K. Mardal
Implementing a K-E Turbulence Model in the FEniCS Finite Element Programming Environment
MekIT'09. Fifth national conference on Computational Mechanics
S. Linge, A. E. Løvgren, K. Mardal, V. Haughton and H. P. Langtangen
Effect of Tonsilar Position on Cerebrospinal Fluid Flow in the Spinal Subarachnoid Space Studied With Computational Fluid Dynamics
ASNR - 47th Annual Meeting of the American Society of Neuroradiology
2008
Proceedings, non-refereed
A. E. Løvgren, S. Linge, K. Mardal, V. Haughton and H. P. Langtangen
CFD Analysis of Cerebrospinal Fluid Flow in the Cranio-Cervical Region
21st Nordic Seminar on Computational Mechanics
O. C. Myklebust, S. Hentschel and K. Mardal
Patient-Specific Computational Fluid Dynamic Simulations in the Circle of Willis
21st Nordic Seminar on Computational Mechanics
Journal Articles
J. Isaksen, K. Valen-Sendstad, K. Mardal and T. Ingebrigtsen
Simulation of Hemodynamics in the Aneurysm Neck After Coiling
Neuroradiology
Talks, contributed
M. S. Alnæs and K. Mardal
SFC - the SyFi Form Compiler
Talk at the FEniCS 08 Workshop, March 5-7,Baton Rouge, Louisiana
A. E. Løvgren, S. Linge, K. Mardal, V. Haughton and H. P. Langtangen
CFD Analysis of Cerebrospinal Fluid Flow in the Cranio-Cervical Region
Invited talk at the 21st Nordic Seminar on Computational Mechanics, Trondheim, October 16-17
O. C. Myklebust, S. Hentschel and K. Mardal
Patient-Specific Computational Fluid Dynamic Simulations in the Circle of Willis
Invited talk at the 21st Nordic Seminar on Computational Mechanics, Trondheim, October 16-17
S. Linge, A. E. Løvgren, K. Mardal, V. Haughton and H. P. Langtangen
Chiari Malformation - the Problem and a Mathematical Approach
Invited talk, Vindern Medical Center, 8th of December, Oslo, Norway
K. Mardal, K. Valen-Sendstad, O. C. Myklebust and S. Hentschel
Scientific Computing at Simula
Invited Talk at Workshop on Cerebral Aneurysms and Subarachnoidal Hemorrhage, Troms ø Jan 24-26
K. Mardal, B. F. Nielsen and M. S. Alnæs
Two Steps Towards Automating Efficient Solution of Inverse Problems
Invited Talk at the FEniCS 08 Workshop, March 5-7,Baton Rouge, Louisiana
K. Mardal, K. Valen-Sendstad, O. C. Myklebust and S. Hentschel
Blood Flow Computations at Simula
Invited talk at Medical Physics, University of Wisconsin, March 11.
S. Linge, A. E. Løvgren, K. Mardal, V. Haughton and H. P. Langtangen
Cerebrospinal Fluid Flow in Normal and Chiari Subjects
talk, Seminar at CBC (Simula Research Laboratory), 16th of December, Oslo, Norway
S. Linge, A. E. Løvgren, K. Mardal, V. Haughton and H. P. Langtangen
Cerebrospinal Fluid Flow Simulations - Normal Subjects and Patients With Chiari I Malformation
talk, Seminar at CBC (Simula Research Laboratory), 31st of October, Oslo, Norway)
S. Linge, A. E. Løvgren, K. Mardal and H. P. Langtangen
Simulating the Cerebral Fluid Flow Associated With Chiari I Malformation in Idealized Geometries
talk, Seminar at CBC (Simula Research Laboratory), 25th of June, Oslo, Norway.
S. Linge, A. E. Løvgren, K. Mardal and H. P. Langtangen
Simulating the Cerebral Fluid Flow Associated With Chiari I Malformation in Idealized Geometries
talk, Seminar at CBC (Simula Research Laboratory), 20th of May, Oslo, Norway.
K. Valen-Sendstad, A. Logg and K. Mardal
Developing Flow Solver Methodology for Patientspecific Simulation of Hemodynamics
Talk at Workshop on Finite Element Methods for Fluids and Fluid-Structure Interaction, June 5
Talks, invited
K. Mardal
Hemodynamics in the Circle of Willis
Invited talk at Institute for Computational and Applied Mathematics, Muenster, Germany, November 18
2007
Book Chapters
A. Logg, K. Mardal, M. S. Alnæs, H. P. Langtangen and O. Skavhaug
A Hybrid Approach to Efficient Finite Element Code Development
Petascale Computing - Algorithms and Applications
Journal Articles
K. Mardal, B. F. Nielsen, X. Cai and A. Tveito
An Order Optimal Solver for the Discretized Bidomain Equations
Numerical Linear Algebra with Applications
K. Mardal, T. K. Nilssen and G. A. Staff
Order Optimal Preconditioners for Implicit Runge-Kutta Schemes Applied to Parabolic PDE's
SIAM Journal on Scientific Computing
K. Mardal, O. Skavhaug, G. T. Lines, G. A. Staff and Å. Ødegård
Using Python to Solve Partial Differential Equations
Computing in Science & Engineering
M. S. Alnæs, J. G. Isaksen, K. Mardal, B. Romner, M. K. Morgan and T. Ingebrigtsen
Computation of Hemodynamics in the Circle of Willis
Stroke
Manuals
M. S. Alnæs, A. Logg, K. Mardal, O. Skavhaug and H. P. Langtangen
UFC Specification and User Manual 1.0
Talks, contributed
K. Mardal
Computation of Hemodynamics in the Circle of Willis
Talk at Workshop: Modelling and Computation of Biomedical Processes - June 7-14, 2007
K. Mardal
Finite Elements With Symbolic Computations and Code Generation
Talk at Software Issues in Computational Science and Engineering (SCSE 2007), Uppsala, 2007-08-11
M. S. Alnæs, K. Mardal and J. Sundnes
Application of Symbolic Finite Element Tools to Nonlinear Hyperelasticity
Talk at MekIT'07: Fourth National Conference on Computational Mechanics
J. Sundnes, M. S. Alnæs and K. Mardal
A Finite Element Model of Cardiac Electrophysiology and Mechanics
VII International conference on computational plasticity
Proceedings, refereed
M. S. Alnæs, K. Mardal and J. Sundnes
Application of Symbolic Finite Element Tools to Nonlinear Hyperelasticity
Fourth national conference on Computational Mechanics (MekIT'07)
2006
Books
J. Sundnes, G. T. Lines, X. Cai, B. F. Nielsen, K. Mardal and A. Tveito
Computing the Electrical Activity in the Heart
Proceedings, non-refereed
C. Tarrou, O. M. Lysaker, X. Cai, K. Mardal, C. Tarrou, T. S. Ruud, M. C. MacLachlan and A. Tveito
Identifying Ischemic Heart Disease in Terms of ECG Recordings and an Inverse Problem for the Bidomain Equations; Modeling and Experiments
The Third International Conference "Inverse Problems: Modeling and Simulation"
Journal Articles
K. Mardal and R. Winther
An Observation on Korn's Inequality for Nonconforming Finite Element Methods
Math. Comp.
G. A. Staff, K. Mardal and T. K. Nilssen
Preconditioning of Fully Implicit Runge-Kutta Schemes for Parabolic PDEs
Model. Identif. Control
J. Sundnes, B. F. Nielsen, K. Mardal, X. Cai, G. T. Lines and A. Tveito
On the Computational Complexity of the Bidomain and the Monodomain Models of Electrophysiology
Annals of Biomedical Engineering
K. Mardal and T. K. Nilssen
Reuse of Standard Preconditioners for Higher-Order Time Discretizations of Parabolic PDEs
Journal of Numerical Mathematics
Manuals
M. S. Alnæs and K. Mardal
SyFi User Manual
Talks, contributed
B. F. Nielsen, O. M. Lysaker, X. Cai, K. Mardal, C. Tarrou, M. C. MacLachlan, J. Sundnes, G. T. Lines and A. Tveito
Computational Issues in Heart Modeling
Presented at the Johann Radon Institute for Computational and Applied Mathematics, Linz, Austria
M. S. Alnæs, A. M. Bruaset, X. Cai, H. P. Langtangen, K. Mardal, H. Moe, O. Skavhaug and Å. Ødegård
Python in High Performance Computing
Tutorial presented at the Para06 Workshop
B. F. Nielsen, O. M. Lysaker, C. Tarrou, J. Sundnes, X. Cai and K. Mardal
On the Use of the Bidomain Equations for Computing the Transmembrane Potential Throughout the Heart Wall: an Inverse Problem
Presented at the Computers in Cardiology conference in Valencia, Spain
K. Mardal
SyFi - an Element Matrix Factory, With Emphasis on the Incompressible Navier-Stokes Equations
Presentation held at the Para06 workshop
H. P. Langtangen and K. Mardal
Mathematical Modeling of Blood Flow
Lecture at Svalbard summer school
K. Mardal
SyFi - a Package for Symbolic Finite Element Computations
Presented at the Fenics06 workshop in Delft, Netherlands, 2006.
Proceedings, refereed
B. F. Nielsen, O. M. Lysaker, C. Tarrou, J. Sundnes, X. Cai and K. Mardal
On the Use of the Bidomain Equations for Computing the Transmembrane Potential Throughout the Heart Wall: an Inverse Problem
Computers in Cardiology 2006
G. A. Staff, K. Mardal and T. K. Nilssen
Block Preconditioners for Fully Implicit Runge-Kutta Schemes Applied to the Bidomain Equations
ECCOMAS CFD 06
K. Mardal
SyFi - an Element Matrix Factory, With Emphasis on the Incompressible Navier-Stokes Equations
Para'06
2005
Talks, contributed
K. Mardal, B. F. Nielsen and A. Tveito
Preconditioners for Elliptic Problems With Variable Coefficients
Presented at the SIAM Conference on Mathematical and Computational Issues in the Geosciences, Avignon, France
A. M. Bruaset, M. S. Alnæs, H. P. Langtangen, K. Mardal, H. Moe, O. Skavhaug and Å. Ødegård
Scientific Computing in Python
Tutorial ASIM 2005
Proceedings, refereed
G. A. Staff and K. Mardal
The Accuracy of the Velocity Approximation With Respect to the Pressure Approximation for Incompressible Fluid Flow
Third National Conference on Computational Mechanics (MekIT 05)
G. A. Staff, K. Mardal and T. K. Nilssen
Preconditioning of Fully Implicit Runge-Kutta Schemes for Parabolic PDEs
SIMS05. 46th Conference on Simulation and Modeling, Trondheim, October 13-14
Technical reports
O. Skavhaug, K. Mardal and H. P. Langtangen
A Python Framework for Verifying Codes for Numerical Solutions of Partial Differential Equations
K. Mardal, B. F. Nielsen, X. Cai and A. Tveito
An Order Optimal Solver for the Discretized Bidomain Equations
2004
Journal Articles
K. Mardal and R. Winther
Uniform Preconditioners for the Time Dependent Stokes Problem
Numerische Mathematik
Talks, contributed
T. K. Nilssen and K. Mardal
Reuse of Standard Preconditioners for Higher-Order Time Discretizations of Parabolic PDEs
Talk at the Eigth Copper Mountain Conference on Iterative Methods, Copper Mountain, CO, USA
K. Mardal and A. Tveito
Block Preconditioners for PDEs Arising From the Bi-Domain Model of the Electrical Activity in the Heart
Talk at the Copper Mountain Conference, Colorado, USA
M. Westlie, K. Mardal and H. P. Langtangen
Making a Python Interface to the C++ Library Diffpack
Talk at the EuroPython 2004 Conference, Gothenburg, Sweden
Å. Ødegård, K. Mardal, P. Miller, H. Moe, O. Skavhaug, A. M. Bruaset and H. P. Langtangen
High Performance Computing in Python
Tutorial, SC2004
Technical reports
P. Böhm, A. M. Bruaset, H. P. Langtangen, K. Mardal and G. Wachutka
Diffpack Implementation of Edge-Based Non-Standard Finite Element Methods
2003
Book Chapters
H. P. Langtangen and K. Mardal
Using Diffpack From Python Scripts
Advanced Topics in Computational Partial Differential Equations - Numerical Methods and Diffpack Programming
K. Mardal, G. Zumbusch and H. P. Langtangen
Multigrid Methods in Diffpack
Advanced Topics in Computational Partial Differential Equations - Numerical Methods and Diffpack Programming
K. Mardal and H. P. Langtangen
Mixed Elements in Diffpack
Advanced Topics in Computational Partial Differential Equations - Numerical Methods and Diffpack Programming
K. Mardal, J. Sundnes, H. P. Langtangen and A. Tveito
Block Preconditioning and Systems of PDEs
Advanced Topics in Computational Partial Differential Equations - Numerical Methods and Diffpack Programming
Talks, contributed
K. Mardal, A. Huerta, H. P. Langtangen and D. Harry
Numerical Modeling of Crust and Mantle Movement
Talk presented at SIAM Conference on Mathematical and Computational Issues in the Geosciences (GS0 3), March 17-20, 2003, Austin, Texas.
G. T. Lines, B. F. Nielsen, A. Tveito, J. Sundnes, P. Grøttum, X. Cai and K. Mardal
Computing the Electrical Activity in the Human Heart
Presented at the Centre of Mathematics for Applications, Oslo
A. Tveito, G. T. Lines, J. Sundnes, B. F. Nielsen, P. Grøttum, X. Cai and K. Mardal
Computing the Electrical Activity in the Human Heart
Presented at the European Conference on Numerical Mathematics and Advanced Applications, Prague, Czech Republic
A. Tveito, G. T. Lines, B. F. Nielsen, J. Sundnes, P. Grøttum, X. Cai and K. Mardal
Computing the Heart
Presented at the 21st CAD-FEM users' meeting 2003 - International congress on FEM technology, Potsdam, Germany
Proceedings, refereed
A. Kristoffersen and K. Mardal
Solving Heat Distribution in Room Using Mixed Finite Element for Coupling the Navier-Stokes Equations and the Heat Equation
Proceedings of the Second National Conference on Computational Mechanics (MekIT'03)
K. Mardal, H. P. Langtangen and R. Winter
Error Estimates for the Linear Navier-Stokes Equations
Proceedings of the Second National Conference on Computational Mechanics (MekIT'03)
PhD Thesis
K. Mardal
Software and Numerical Methods for the Incompressible Navier-Stokes Equations
2002
Journal Articles
H. P. Langtangen, K. Mardal and R. Winther
Numerical Methods for Incompressible Viscous Flow
Advances in Water Resources
K. Mardal, X. Tai and R. Winther
A Robust Finite Element Method for Darcy-Stokes Flow
SIAM Journal on Numerical Analysis
J. Sundnes, G. T. Lines, K. Mardal and A. Tveito
Multigrid Block Preconditioning for a Coupled System of Partial Differential Equations Modeling the Electrical Activity in the Heart
Computer Methods in Biomechanics and Biomedical Engineering
Talks, contributed
G. T. Lines, J. Sundnes, A. Tveito, X. Cai, K. Mardal and A. M. Bruaset
Diffpack Simulation of the Electrical Activity in the Heart
Invited minisymposium talk at the 20th CAD-FEM User's Meeting, Friedrichshafen, Germany
Proceedings, refereed
H. P. Langtangen and K. Mardal
A Software Framework for Mixed Finite Element Programming
Proceedings of the 2nd International Conference on Computational Science
Technical reports
K. Mardal, E. Acklam and D. Calhoun
How to Use MATLAB in C++ Programs
2001
Talks, contributed
J. Sundnes, G. T. Lines, K. Mardal and A. Tveito
On Numerical Techniques for the Bidomain Model
Presented at the SIAM Annual meeting, San Diego, California
Proceedings, refereed
K. Mardal, H. P. Langtangen and R. Winter
An Optimal Iterative Method for the Time-Dependent Stokes Problem
Tenth Conference Virtual Proceedings, Copper Mountain Conference on Multigrid Methods
K. Mardal and H. P. Langtangen
An Efficient Parallel Iterative Approach to a Fully Implicit Mixed Finite Element Formulation for the Navier-Stokes Equations
ECCOMAS CFD 2001, Computational Fluid Dynamics Conference Proceedings
2000
Proceedings, refereed
K. Mardal and H. P. Langtangen
An Effective Iterative Approach to a Fully Implicit Mixed Finite Element Formulation for the Navier-Stokes Equations
13th Nordic Seminar on Computational Mechanics (NSCM-13)