[new3980]

I am trying to mesh the centrifugal blood pump model, where the smallest gap is 1mm, hence, I try to create a meshing element size of 0.25mm instead. But reducing elements size leads to a significant increase in turbulent viscosity during calculation.

I try using inflation and multizone, but multizone ended up with an error "multizone mesh bodies with multi shells to all hex is not supported"

May I have any suggestions or methods on how to properly mesh this model?
[IMG]file:///C:/Users/MBComputer/Downloads/model.png[/IMG]