Variational Multiscale LES modeling of blood flow in an idealized left human heart
Thursday 1st March 2018
Menghini, F.; Dede', L.; Quarteroni, A.
In this work we build a realistic, although idealized, computational model of the left human heart for the study of the blood flow dynamics. We prescribe the left heart wall displacement based on physiological data and we take into account the presence of both the mitral and aortic valves through a resistive method. We simulate the left heart hemodynamics by means of the Finite Element method and compare different numerical stabilization techniques to account for the transitional and nearly turbulent nature of the blood flow in a physiological regime. In particular, we apply a Variational Multiscale Large Eddy Simulation (LES) model and a Streamwise Upwind Petrov-Galerkin method and we critically analyze the corresponding numerical results.