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Radial Fan (MRF/RBM). Problem with Rigid Body Motion -RBM

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Old   February 28, 2021, 05:19
Red face Radial Fan (MRF/RBM). Problem with Rigid Body Motion -RBM
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Hello guys,
i simulate the fan behaviour of Moving Reference Frame MRF ("Frozen Rotor") and Rigid Body Motion RBM (Unsteady RANS).I have a problem with RBM.I got too much differential pressure.I thought the problem was with Geometry, but I made many changes to Geometry, but still nothing.
There Are Physics for 3 Regions-Housing/Inlet/Rotor.


Region Housing-Physics Values-Motion Specification --- //Stationary/ReferenceFrame for Rotation//

Region Inlet-Physics Values-Motion Specification ---- Stationary/ReferenceFrame for Rotation//

Region Rotor-Physics Values-Motion Specification ---//Rotation/LAbFrame for Rotation//

how i know the Region of Housing and of Inlet are Stationary and for that the Reference Frame must be Reference Frame for Rotation.
But if i change only in Housing Region the Reference Frame for Rotation to LabFrame for Rotation , i get a perfect solution. is it correct?
maybe you could help me ,i have a few days to find the reason .
Thank you
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