can you give some more information about the actual application?
if you have a closed valve, there will be no flow, and flow simulation won't calculate anything
if there is a small leak, you can select all the faces and choose surface parameter and create a force surface parameter to determine how much force is required to keep it in that state
I got clue in the third line ..
I need to find the pressure required to break the valve or maximum can a globe valve position change due to hydrostatic pressure applied in condition.
I am user of Flow simulation, will you pl. explain how to find out hydrodynamic torque in butterfly valve shaft.