Simulating a steady, 2D flow through a channel
 

Hey everyone,

As the title says, I'm currently trying to simulate a steady, 2D internal flow through a channel in FLUENT. The flow at the inlet is supersonic, I have the solver set to density-based, and the flow is inviscid.

I'm working on setting my boundary conditions at the inlet and outlet (the other edges are just walls). At the inlet, I'm struggling to find a boundary condition that would allow me to define the Mach number (since a velocity-inlet won't work with compressible flows). Also, I'm not sure what to do for the outlet. I've tried a mass-flow-outlet, a pressure-outlet, and a pressure-far-field, but none of them have worked for me. The residuals don't converge, and typically when I view a contour of the static pressure, I see extremely low pressure everywhere except for a very small area near the outlet, where the pressure is extremely high.

Are there any other boundary conditions I could use that should work? Or could the problem be elsewhere in my settings? Any help would be greatly appreciated.

Thank you,
Cal

Edit: I forgot to mention that the air is an ideal-gas.