[kovage]

Dear All,

I would be grateful if you could support me about this cfd problem.
I am planning to simulate a moving waterjet nozzle which is active and targeted toward a pipe. The picture represents the problem.



I have 3 nozzles, and you can see the cross section view of one of them. I would like to use overset for the outlet of the nozzles which connects into a water tank (background in the picture). The motion of the nozzle could be solves with this technique.
I cannot avoid a full oversetting process which means the overset connection occurs also along the wall of the nozzle. I have tried a lot of adjustments (like all type of dynamic behaviour, bounded overset topology etc..) but there was always flow interaction between the nozzle wall and the background.

Do you have any tips how can I avoid this phenomenon?

Thanks your answers in advance and all the best!

Greg