________________________________ Hi Users, I am solving my cavity flow case at a Re= 0.3x10^7 per mtr, M=0.15, and NumModes=4. I am not using the CFL tool, instead I am taking a constant time step = 0.0001. The simulation is running fine now but the problems now remains as follows: 1) The residuals are not good at all. (pics attached below) 2) I am still not able to capture the boundary layers in this mesh though the flow in cavity is captured but it can't be accurate. (Present mesh attached below) 3) My final aim is to run the simulation at a larger RE (1X10^7 per mtr at M-0.5). (presently used solver info, parameters and expansions used are attached below) 4) I also need to run the CFL tool to get the mean flow which I can further use as base flow for the stability analysis. I am trying it out but the solution is terminating when I use CFL tool. It is working only when I use CFL=0.1. 1) Residual [cid:a9b4a5b0-2a7d-45a9-841f-f78538ca0598] 2)Present Mesh [cid:3afb70e7-e590-47be-ab01-03fe8b38b5fd] 3) Solverinfo and Parameters used [cid:5f9937c8-6fed-49f2-aa25-153f71a94bea] 4) Expansions used [cid:f4dd55b8-2b6a-4185-becc-c037ff3a5fe2] Result(Mach Contour at 1Sec) [cid:797fa64e-55db-4abc-aa5b-4e6c83a1a06f] I tried the same case at a very low Re = 7500 using Incompressible flow solver and I could capture the boundary layer but the residuals still not good. When I try running it for longer time the solution is blowing up. Can anyone please help me out with where I am going wrong? How to reduce the residual and get a converged solution? Regards, Dev
