Sai Deogekar
Ansys Employee

Hi,

In the second image I do not see the two pipes intersecting. Could you maybe mark the problematic area?

I am not sure changing the to Transient would resolve the issue. Transient is primarily used when you want to account for inertial effects. Is that something you wish to account for in this simulation?

Also, please share the contact definition (contact and target regions, contact setting used etc.). That way other forum users can help you.