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I'm trying to model air flow caused by wafter blades at the end region of motor. But the walls around reference frame (which captures the blade) are categorized as no slip wall instead of interior wall.
Please help me sorting this out, thanks.
The Default Wall with type = auto_wall should handle this scenario properly, assuming there is another "air" element set/volume on the other side of those boundaries.
If only the blades are rotating - and not the cylindrical wall nearby - you could redefine the reference frame. When selecting the solid (air volume), un-check 'Include Bounding Surfaces', then also click 'Surfaces' and select only those surfaces that are actually physically rotating. Does that make a difference in the results?
(If you can attach the HyperWorks CFD .hm file, we can also help you review it.)
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