[GSWagain]

Hello. I'm generating mesh by using ANSYS ICEM.
Tank is composed of two parts, fluid and solid part.

I made wall part for outside of the tank(outside of solid part).

Then, inner surfaces become inside wall of the tank.

Now, there is problem... The problem is that some parts were recognized as wall in ANSYS Fluent..

You can see what I mean in the attached photo. I want to remove wrong wall. How can I fix it? Thanks in advance