[kola77]

Hello all together,

I am currently busy with a simulation of a double pipe heat exchanger. However, I am having problems with the mesh generation of the geometry. The problem seems to appear in the solid domain (pipe wall), but only if the wall is too thin. As long as I operate with a wall thickness of about 1 cm the mesh can be easily generated, but as soon as I change it to about 5mm, I get the intersecting geometry error. I have no idea how to fix this, since I have created my geometry from scratch several times, tingled around with the spacing settings and I always get the same error. I would really appreciate it if somebody has any advice on how to solve this problem or any advice on how to do it whatsoever.
I'm using ANSYS 12, so the thin interface feature is not really an option.

In case anybody is kind enough to take a look, here is my workbench project: https://rapidshare.com/files/4084825686/doublepipe.zip

Thanks in advance!