I’m going to set up an external supersonic simulation soon, and I am not sure where to start.
The simulation is on a ramjet engine. It must simulate the engine being put in a wind tunnel where the airspeed is 350m/s, and the atmospheric pressure is the same than at sea level.
How should I go about setting up the boundary conditions for this?
Should there be a velocity inlet in front of the engine and a pressure outlet behind it? I tried this and got strange results.
My preliminary investigation can be accessed through this link:
If anyone here has experience on setting up a supersonic flow simulation, it is most welcome.