Blood flow simulation interacting with elastic vessel by IDO scheme

Abstract

The computer simulation for blood flows interacting with elastic vessel requires a new numerical scheme. The INTERGRID method on the Cartesian grid has been developed based on the combination of original Cut-Cell technique and IDO (Interpolated Differential Operator) scheme. DEM (Discrete Element Method) is employed for modeling of the elastic vessel and coupled with the fluid equation. In comparison with the case with the rigid vessel, the maximum pressure decreases, and the response of the flow velocity for the pulsatile injection is delayed owing to expanding the blood volume.