Fluid Structure Interaction Simulations of Physiological Blood Flow in the Aorta
Keywords
Computational Medicine for the Cardiocirculatory System
Code:
28/2010
Title:
Fluid Structure Interaction Simulations of Physiological Blood Flow in the Aorta
Date:
Wednesday 3rd November 2010
Author(s):
Crosetto, Paolo; Reymond, Philippe; Deparis, Simone; Kontaxakis, Dimitrios; Stergiopulos, Nikolaos; Quarteroni, Alfio
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Abstract:
The numerical tools to simulate blood flow in the cardiovascular system are constantly developing due to the great clinical interest and to scientifi c advances in mathematical models and computational power. The present work aims to address and validate new algorithms to efficiently predict the hemodynamics in large arteries. The latter rely on fi nite elements simulation of the fluid-structure interaction between blood flow and arterial wall deformation of a healthy aorta. Di fferent sets of boundary conditions are devised and tested. The mean velocity and pressure time evolution is plotted
on di erent sections of the aorta and the wall shear stress distribution is computed. The results are compared with those obtained with a rigid wall simulation. Pulse wave velocity is computed and compared with the values available from the literature. The flow boundary conditions used for the outlets are obtained using the solution of as one dimensional model. The results of the simulations are in agreement with the physiological data in terms of wall shear stress, wall displacement, pressure waveforms and velocities.