Modelling blood flows in the heart: extended Nitsche's method for the treatment of the valves as generalized boundary conditions

We investigate the blood flow inside idealized left ventricles with prescribed wall movement by defining a formulation of boundary conditions for the Navier-Stokes equations accounting for the valves. Specifically, we consider an extended Nitsche’s method for the treatment of general boundary conditions modelling the mitral and aortic valves. The proposed weak formulation includes boundary terms which provide a stabilizing effect for numerical instabilities occurring due to backflow regimes. We present and discuss numerical results for blood flows in left ventricles, both under healthy conditions and in dilatated cardiomyopathy, for which we highlight the effectiveness of the proposed method.


Editor(s):
Nithiarasu, Perumal
Budyn, Elisa
Published in:
Proceedings of 4th International Conference on Computational and Mathematical Biomedical Engineering - CMBE2015, 75-78
Presented at:
4th International Conference on Computational and Mathematical Biomedical Engineering, Ecole Normale Superieure de Cachan, Cachan, France, June 29-July 1, 2015
Year:
2015
Publisher:
Swansea, United Kingdom, CMBE, Zeta Computational Resources Ltd.
ISBN:
978-0-9562914-3-1
Keywords:
Laboratories:




 Record created 2015-11-06, last modified 2018-03-17


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