Modeling of pulsatile blood flow in an axisymmetric tube with a moving indentation

الملخص EN

The time-dependent flow in an axisymmetric tube with a moving indentation is numerically simulated using a dynamic mesh model.

The model was first validated for a two-dimensional planar channel with a moving indentation.

The results exhibited very good agreement with the published experimental results.

The model was then used to simulate the blood flow with steady and pulsatile inflows in an axisymmetric tube with an indentation moving at a frequency of 1Hz.

For the same value of Reynolds number of 200, vortex doubling downstream of the moving indentation was more enhanced in the case of pulsatile flow inlet conditions.

Higher wall shear stresses and pressure drops were obtained for the pulsatile inflow as compared with the steady inflow.