Obstructed flow-Unstructured mesh
 

Hi,

I am working on obstructed flow in a tunnel. I am using Volume Split command to create obstruction in the tunnel and I could only generate Tetrahedral mesh of TGRID type (unstructured mesh)which is giving a lot number of mesh elements.

How could I generate a structured mesh for an obstructed flow? Is there any method other than Splitting the volume to create the obstruction?

Please help.

Thank you.