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flat plate boundary layer problem --great influence of viscosity |
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August 10, 2010, 15:04
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flat plate boundary layer problem --great influence of viscosity
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#1 |
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Senior Member
wayne.zhang
Join Date: Mar 2009
Location: Shanghai, Shanghai, P.R.China
Posts: 309
Rep Power: 18    |
Dear everyone:
Last edited by waynezw0618; August 12, 2010 at 12:05. |
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August 10, 2010, 19:04
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#2 |
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New Member
Jiang Lijun
Join Date: Mar 2009
Posts: 14
Rep Power: 17 |
It seems that there is a convergence problem with this case, k and epsilon were not convergent finally(because the RelTol set is 0.1?). And are you sure the BC. of U on top patch is proper set to fixedValue ? Anyway, it's a interesting but strange case, hope someone give me a bright hint.
Best, LJ |
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August 11, 2010, 07:25
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#3 |
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Senior Member
wayne.zhang
Join Date: Mar 2009
Location: Shanghai, Shanghai, P.R.China
Posts: 309
Rep Power: 18 |
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Last edited by waynezw0618; August 12, 2010 at 12:07. |
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August 11, 2010, 07:53
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#4 |
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Senior Member
wayne.zhang
Join Date: Mar 2009
Location: Shanghai, Shanghai, P.R.China
Posts: 309
Rep Power: 18 |
Last edited by waynezw0618; August 12, 2010 at 12:07. |
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August 11, 2010, 13:46
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#5 |
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Senior Member
wayne.zhang
Join Date: Mar 2009
Location: Shanghai, Shanghai, P.R.China
Posts: 309
Rep Power: 18 |
And also fine in CFX
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August 11, 2010, 13:53
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#6 |
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Senior Member
wayne.zhang
Join Date: Mar 2009
Location: Shanghai, Shanghai, P.R.China
Posts: 309
Rep Power: 18 |
Again the result of Fluent as before is not clear.
and it seems not the problem of turbulence model and wall function as i have turn off the turblence model by using laminar,This strange sensitive phenomenont will also happpened thanks |
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August 12, 2010, 02:19
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#7 |
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Senior Member
su junwei
Join Date: Mar 2009
Location: Xi'an China
Posts: 151
Rep Power: 20 |
what is your numerical boundary condition for your up patch in the poor case? It seems that it is a fixed value. Have you tried zerogradient or sym boundary condition for this patch?
regards, Junwei |
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