AuthorsJ. Sundnes, G. T. Lines and A. Tveito
TitleAn Operator Splitting Method for Solving the Bidomain Equations Coupled to a Volume Conductor Model for the Torso
AfilliationScientific Computing, Scientific Computing
StatusPublished
Publication TypeJournal Article
Year of Publication2005
JournalMathematical Biosciences
Volume194
Number2
Pagination233-248
Date PublishedApril
Abstract

In this paper we present a numerical method for the bidomain model, which describes the electrical activity in the heart. The model consists of two partial differential equations (PDEs), which are coupled to systems of ordinary differential equations (ODEs) describing electrochemical reactions in the cardiac cells. Many applications require coupling these equations to a third PDE, describing the electrical fields in the torso surrounding the heart. The resulting system is challenging to solve numerically, because of its complexity and very strict resolution requirements in time and space. We propose a method based on operator splitting and a fully coupled discretization of the three PDEs. Numerical experiments show that for simple simulation cases and fine discretizations, the algorithm is second-order accurate in space and time.

Citation KeySundnes.2005.2