nThanks for your reply.n I?m trying to model cube with a hole on front in a domain with inlet and outlet. Exactly, it requires high resolution at all faces of the cube because of separation to achieve proper yplus. As it is LES, the growth rate cannot be high and it will be ended up with millions of meshes which are not affordable in terms of computational cost. I wanted to have a structured mesh with full control on it but reduce the number of meshed far from the cube.