Mesh Refinement and Smaller Time-step

In the original calculation, a body sizing of 1e-3 is applied, hence the total number of cells in that mesh is 145082. However, in the refined mesh, a body sizing of 5e-4, which is half of the original size, is applied, and resultantly the total number of cells in the refined mesh is 217475. Ideally, it is also good to refine the inflation mesh by choosing a smaller inflation thickness. In this tutorial, this has not been done, but readers are encouraged to do this step.

In the original calculation, the time-step that was used was 0.01 s. For verification, a smaller time-step of 0.005 s is used.

Case Comparison

After recalculating the cases, a case comparison is made to check the differences. First, the wall shear on the artery wall is plotted for comparison.

From the plot above, we can tell that the wall shear distribution is almost identical throughout all three cases. But in order to make a more mathematically rigorous comparison, we need to extract some numerical data from the cases for comparison. The function calculator can be used to extract numerical information from the cases.

Here in the example, the maximum pressure on the wall in the three cases is calculated. By comparing the values, we can see that the difference between the original case and the refined cases is only 0.02% and 0.001%. This shows that pressure value is consistent in all cases. Thus based on these results from case comparisons, it is safe to say that the results obtained in the original case are verified.