Hello to everyone!
I am working in a compressible flow through a nozzle and I am having a lot of issues. First, I had the problem explained in this Topic but after ramping the pressure I started having results. The problem is that the results are not physically possible (negative pressure, high velocities, etc). All of this was a Steady-State simulation.
Then, I read in a forum that rhoSimpleFoam does not deal well with shock waves, etc. So I created a Transient simulation and, now, I do not have negative pressure values, but the results are not good (the flow behaves as subsonic when it should be supersonic, at least analyticaly). So I thought that trying to improve the residuals (that didn’t look very good) would help. I started messing with the numerics as I have readed in different Topics, but nothing.
If someone have any idea, please, that would be awesome.
Here is my project:
Here there are two simulations (steady-state and tranient), and a lot of Runs changing BC’s, numerics, etc. Sorry about the mess.
Pd: the mesh looks fine i think.