Questions about ICEM

YZ

Hello, everyone, I'm trying to make a mesh which I got some problems in it. It's like a tank with a inlet on the whole top surface and a small side outlet to leak fluid inside out. Anyway, when I am generating the mesh, it always transforms to adapt to the outlet, and I wanna avoid it, i.e., I want to make a totally regular structured mesh with the outlet region which I'll set it as outlet boundary later. Thanks for your attention and answer.

regards, YZ