[CFD_engineer28]

I am trying to complete a simulation of pressure in a nozzle. When I do so, the pressure field is incorrect at the outlet- it switches to my outlet boundary condition very rapidly, in basically a series of very thin lines. For the rest of the field, the pressure is the same as my inlet condition. My velocity result looks similarly strange, except the thin lines are at the inlet.



Can someone provide some guidance? My relevant boundary conditions are as follows:



Pressure: Inlet=zero gradient, outlet=fixed value (68000)

Velocity: Inlet=flowRateInletVelocity, outlet=zeroGradient
Temperature: Inlet=fixed value (300) , outlet=zeroGradient


Images of the problem are attached. Thanks!