Simulation of a body underwater with a tube
 

Attachment 84856
Hi all, I need help simulating a body underwater with a pipe. So far I get good results when I simulate the whole thing without the tube but with the tube the result does not converge anymore, even when I try different turbulence models. Around the body is a cylindrical enclosure with a velocity inlet, walls and pressure outlet. Does anyone have tips and tricks on which way to simulate this? I am interested in the resulting forces in all directions of the body.