Hi Dev, I think your simulation already looks quiet good. At which Reynoldsnumber runs this situation? And could you sent me your mesh please? Which kind of expansion type do you use? And which kind of parameters do you set (for example for the upwind-type)? Actually the only way I can run my simulation is with a coarse mesh and p=1 with M=0.4, Re=408000 and time step O(10^5) according to CFL=0.9. Changing the CFL does not change my results by trying to run this simulation with p=2 and the same mesh. It terminates. Actually I am trying to locally refine my mesh at the points of oscillation, which causes the termination. Best regards, Fabian ________________________________ Von: nektar-users-bounces@imperial.ac.uk [nektar-users-bounces@imperial.ac.uk]" im Auftrag von "devabratasahoo@campus.technion.ac.il [devabratasahoo@campus.technion.ac.il] Gesendet: Montag, 26. Dezember 2016 10:02 An: nektar-users@imperial.ac.uk Betreff: [Nektar-users] Compressible flow solver (Nektar++) Hi Fabian, I wanted to know could you come up with any solution of how to use the compressible flow solver in Nektar? I could come up with a better mesh for my case and I am able run the compressible flow solver with P-4, but residuals are still good at all. Below is the mach contour obtained at time 1sec simulated at a time step of 0.0001. [cid:797fa64e-55db-4abc-aa5b-4e6c83a1a06f] Furthermore, if I try to solve it using CFL tool, it terminates for all CFL values more than 0.1(which is not good). What about your status? Can anyone help me out of this situation? Regards, Dev