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Boundaries for an arc-ringed rotation case

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Old   November 16, 2014, 06:24
Default Boundaries for an arc-ringed rotation case
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Yushi Zhu
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Hi,
I meet a case like this.I wanna simulate water flowing in a ringed domain around an axis.
-I used frame motion with rad/s=0.03(ignore the zone name"solid",the zone is water).
-inlet sets with velocity-inlet to only have a tangential componet with the rotation with 0.03 rad/s with udf(I set all the velocity with absolute definition).
-outlet sets with pressure outlet=0(averaged specification).
-k-omega(sst) as turbulence model.
question:
1.why would the calculated velocity profile like this ,especially the cycled area.
I think the velocity mag should be in proportion to the radius(the velocity should ranged from 0.21 to 0.38m/s).
2.all the set up is shown,hope anyone can help me find out the improper ones.

Thank you so much and best wishes.






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