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Coupled electromechanical model of the heart: Parallel finite element formulation
Author(s) -
Lafortune Pierre,
Arís Ruth,
Vázquez Mariano,
Houzeaux Guillaume
Publication year - 2012
Publication title -
international journal for numerical methods in biomedical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.741
H-Index - 63
eISSN - 2040-7947
pISSN - 2040-7939
DOI - 10.1002/cnm.1494
Subject(s) - finite element method , scalability , computer science , coupling (piping) , work (physics) , constitutive equation , mathematics , computational science , mechanical engineering , engineering , structural engineering , database
SUMMARY In this paper, a highly parallel coupled electromechanical model of the heart is presented and assessed. The parallel‐coupled model is thoroughly discussed, with scalability proven up to hundreds of cores. This work focuses on the mechanical part, including the constitutive model (proposing some modifications to pre‐existent models), the numerical scheme and the coupling strategy. The model is next assessed through two examples. First, the simulation of a small piece of cardiac tissue is used to introduce the main features of the coupled model and calibrate its parameters against experimental evidence. Then, a more realistic problem is solved using those parameters, with a mesh of the Oxford ventricular rabbit model. The results of both examples demonstrate the capability of the model to run efficiently in hundreds of processors and to reproduce some basic characteristic of cardiac deformation. Copyright © 2012 John Wiley & Sons, Ltd.