axial velocity profile in swirling flow
I am simulating a swirling air flow in an unconfined environment (no wall BC) using the RSM model but when I check the axial velocity profiles, I get the highest velocities further downstream from the air flow inlet, which is obviously wrong.
I'm not sure whether i should use PRESTO or BODY FORCES and I hesitate between QUICK and SECOND ORDER for more accuracy.
I determine the operating pressure at the height where the air exits in the atmosphere but I wonder if i should indicate gravity acceleration.
Could you give me the procedure in order to get my axial velocity profile right?
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