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-   -   how to set rotating boundary? (https://www.cfd-online.com/Forums/fluent/48339-how-set-rotating-boundary.html)

 conan May 26, 2008 10:26

how to set rotating boundary?

for example, air flows inside a 3D square channel, say x is flow direction, y,z are cross direction,the case is very simple. Now, the channel rotating with its axes, say y-axes, how to set rotating boundary?

if I have set "FLUID,moving frame, ratating velocuty, direction"

what is the difference in wall boundary between "staionary" and "movingwall,relative to adjacant cell zone, speed=0" ?

for this case, which option should I choose?

thank you

 conan May 30, 2008 09:28

★ Re: how to set rotating boundary?

anybody help me ?

 Curtin University April 6, 2012 00:22

Quote:
 Originally Posted by conan ;151065 for example, air flows inside a 3D square channel, say x is flow direction, y,z are cross direction,the case is very simple. Now, the channel rotating with its axes, say y-axes, how to set rotating boundary? if I have set "FLUID,moving frame, ratating velocuty, direction" what is the difference in wall boundary between "staionary" and "movingwall,relative to adjacant cell zone, speed=0" ? for this case, which option should I choose? thank you
Hi Conan,

I'm stuck on the same thing. I'm trying to model a 3D rotating channel on FLUENT. I've tried using moving reference frame (MRF) as well as simple UDF to incorporate coriolis and centrifugal body forces, however I've been unable to validate my results with that of ASME and other papers...

Any suggestions?

Thanks,

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