[Schag]

Hi all,

quite new in Openfoam, I'm working with rasInterfoam to simulate the flow arount a cylinder in a channel.

I have an inlet with a velocity fixedValue and inletOutlet (1,1) for gamma, zeroGradient for pd.
I have walls with slip conditions
My outlet is set as:
- pressureInletOutletVelocity for velocity
- inletOutlet(1,1) for gamma
- zeroGradient for pd

My issue is:
When it comes to long times, I loose my free surface level. I still have the good inlet level but outlet is about 5m below what I want (out of 30m).

I think I don't have the same massflow at inlet and outlet (obvious), but I do not know how to solve it.

Does anyone has any idea?

Thx for reading!