butterfly valve thermomechanics

I need help setting up a simulation for a butterfly valve in thermodynamics, i don’t know how to set up the simulation as i always get the error for not having enough constraints.
The test would be the structural efforts caused by the internal pressure and heat of the air.
But i don’t know how to set these up. i have a cad model of the valve and flange.

Hi there,
Thank you for posting on the forum
Can you please share your project link?

not sure if this is how but i’ll try.
https://www.simscale.com/workbench/?pid=3772759349996730800&mi=spec%3A8f640a65-18db-457f-bcf0-3454f8b7895b%2Cservice%3ASIMULATION%2Cstrategy%3A8

I did a flow simulation but i want to do a structural analysis based on heat and pressure