3D mesh scramjet inlet

WilliamH · October 8, 2020, 11:58

Hi all,
I have done a 3D mesh on Gmsh of a scramjet inlet. The inlet Mach number is 5.1.
I am in the process of writing the configuration file. Do you have any advice on configuration options to choose for this particular problem (3D, multigrid?, supersonic, compressible)?
Any input will be extremely valuable!
Thanks!!

wallym · October 19, 2020, 12:53

Hi William,

Thanks for your post! This can be tricky getting things to converge, especially once you get to higher Mach numbers. I would stay away from Multigrid to start (can be finnicky). The type of simulation you run (Euler/NS/RANS) will help define your boundary conditions. If you still need more indepth help, Id be happy to walk though some options you have. If so, could you post your mesh/screen shot of your mesh.

Best,
Wally

October 8, 2020, 11:58	3D mesh scramjet inlet	#1
WilliamH New Member William Haigh Join Date: Aug 2020 Posts: 20 Rep Power: 6	Hi all, I have done a 3D mesh on Gmsh of a scramjet inlet. The inlet Mach number is 5.1. I am in the process of writing the configuration file. Do you have any advice on configuration options to choose for this particular problem (3D, multigrid?, supersonic, compressible)? Any input will be extremely valuable! Thanks!!

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October 19, 2020, 12:53		#2
wallym Senior Member Wally Maier Join Date: Apr 2019 Posts: 123 Rep Power: 7	Hi William, Thanks for your post! This can be tricky getting things to converge, especially once you get to higher Mach numbers. I would stay away from Multigrid to start (can be finnicky). The type of simulation you run (Euler/NS/RANS) will help define your boundary conditions. If you still need more indepth help, Id be happy to walk though some options you have. If so, could you post your mesh/screen shot of your mesh. Best, Wally