Aras karimi

Therefore, it is not a problem to condense the network in one area of the network, only the edges of adjacent blocks should have a good growth ratio.

What is the appropriate ratio number for the edges of adjacent blocks? 1.1 or 1.2 or...

I checked the aspect ratio of the grid, which reported values of 1-31500, which is a very high number and shows most of the very large elements produced behind the airfoil:


I increased the number of nodes in the block lines behind the airfoil, which reduced the aspect ratio, but the total number of cells in the grid increased significantly. 

Is there a need to create a smaller block near the airfoil and also cut the block behind the airfoil so that the mesh is small only in those areas?

Thank you for your reply.