Hi, For my final year enginnering project, i want to simulata the pressure difference of screw compressor, i have used the global rotating option. But this is not giving me the correct outcome for the two screws rotating in opposite directions. Any advice and help is greatly appreciated.
You could post an image of the geometry (I am imagining a tappered screw type of rotor) ), I am pretty sure the rotating frame appoximation is not a good approximation for this class of problem. You would need a moving mesh capability whch is not supported in Flow sim.