How to match mesh elements in fluid structure interface
 

hi guys

In modeling a vessel through which blood flows, when meshing first structural part and then the fluid model in cfx i could not match the elements. I want each element of the solid and fluid match each other on the interface.

It says mesh match tolerance value can be increased. I increased till 0.02 which is the borderline it suggests but still the meshed do not match.

I appreciate your contributions

PS:I attach the mesh lines of the fluid & solid model on the interface