Prediction for hemolysis properties in blood flows including flow separation and reattachment by using computational fluid dynamics

摘要

This study describes a numerical prediction method for hemolysis properties in orifice-pipe blood flow. In this study, we compute orifice-pipe flow by using two turbulence models, that are (1)standard low Reynolds number k-ε model (STD), and that are (2)the k-ε model with partly patched LK model (LK Zonal) to improve computational accuracy. And we estimate the hemolysis properties from these predicted flows. The results are 1) computational accuracy of orifice-pipe flow is improved by using LK Zonal model, 2) accuracy of predicted hemolysis is also improved especially in orifice-pipe that have long contracted part.