Question about mesh generation for a special case
 

Hi,

I'm working on the mesh generation for a special case by ICEM. The fluid domain is a pipe inside a cube. And the cube edge is tangential to the circle. I decide to use O-grid. But since the some of the connection part between the pipe and the cube is infinitely small. I always have bad quality over there. Could someone tell me how to solve this problem? :confused:

Best regards and many thanks.
lnk