[atenamsv]

Hey everyone
At the moment i'm trying to simulate a sonic flow, with rhoCentralFoam, And it is working properly how ever i experience an instability at the inlet. The boundary condition for inlet is totalPressure, p0 6 bar, Value 6 bar.
I want to increase my initial p0 step by step, is it possible in openfoam?
I mean for example i'd like to have an initial p0 of 6 bar, but i want to start from 1 bar and increase it every 100 timesteps. I would be happy if someone can help me.

[geth03]

one way to realize that is with codeStream.

https://wiki.openfoam.com/Programming1

[HPE]

Hi,

Another possibility is to modify totalPressure BC's

scalarField p0_;

to

PatchFunction1<scalar> p0_;

so that you can use Function1' ramp function.

It is not available yet - but sooner or later, the functionality you are looking for will be coded into totalPressure. You can modify it as above if you can't wait for it.

Hope this helps.