Leibniz MMS Days 2022 - Abstract

Katz, Sarah

Blood Flow Simulations and the Sensitivity of Quantities of Interest to Numerical Modeling

Blood flow simulations are of increasing importance for medical diagnostics. Modern MRI techniques allow the reconstruction of flow velocity fields at moderate resolution; however, clinically relevant quantities of interest such as the pressure drop between two regions or the wall shear stress at key locations are difficult to recover from such measurements. From the computational point of view, hemodynamic flow simulations are challenging due to the turbulence of the flow, the flexibility of blood vessels, the complexity of the domain and the difficulty of modelling the response of the remainder of the circulatory system. In this talk, we will focus on turbulence modelling, discussing several common models and comparing their impact on key derived quantities of interest as well as computational efficiency.