[quiqui]

Hi,
I am simulating a valve moving, watching the delta_p between inlet and outlet.
Inlet is constant mass flow rate (water), outlet is constant static pressure.
inlet and outlet are extended to have fully developed flow.

As the valve moves, the inlet pressure is changing.
At close position, delta_p from simulation is 450 psi.

But the experiment only gave 250 psi.

we don't know where the problem is. Any body have any idea?

thanks