Average-State Flux-Split Incompressible Solvers for Aortic Flow Simulation Based on MRI Data
【摘要】：正 In this study, a hierarchy of average-state approximate Riemann solver is proposed to solve the incompressible time-dependent Navier-Stokes Equations on generalized coordinates. In the evaluation of unsteady time accuracy, a LUSSOR implicit scheme is utilized with dual-time stepping. Numerical benchmark is performed on the lid-driven cavity flow calculations. The main goal of this work is to analyze developing, pulsatile blood flows through a physiologically realistic model of an aortic arch based on the current incompressible approach. The wall pressure and shear stress distributions are computed based on the model geometry and blood flow velocity conditions which are obtained by phase contrast m agnetic resonance mage (MRI) technique.