[Noix_V]

Hello again.


I'm trying to simulate a cylinder which fills ups with compressible gas. Selected ideal-gas as density method and I'm using the Density-Based Solver with a Courant number of 1.



I managed to get my simulation up and running and the first time step looks great in terms of velocity and pressure, just what you would expect:






However it does not seem to keep going after sucesive time step: the residuals don't go up like they should bewteen time step: they just keep going down with no big differences in the profile (exactly the same every time step!)

Why does that happen? How can this be the steady state with such huge differences of pressure and speed?