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Old   February 17, 2005, 20:15
Default Laminar pipe flow
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John
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Hi,

Why do I get worse results compared whit analytical results when I refine the mesh? I'm simulating laminar pipe flow (Re=1400) and the residuls of all simulation are less then 1e-3. When I have a mesh with more cells the result seems to be of a turbulent flow. Thanks in advance. John
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Old   February 18, 2005, 04:10
Default Re: Laminar pipe flow
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Randheer Yadav
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please don't go for the residuals because they often create confusion. Better you check the results with analytical solutions. Here is one link of cornell university. You will find the "laminar flow in pipe". go through it and i hope u will be happy. http://instruct1.cit.cornell.edu/courses/fluent/ bye
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Old   February 18, 2005, 14:37
Default Re: Laminar pipe flow
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John
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Old   February 18, 2005, 14:42
Default Re: Laminar pipe flow
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John
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Thanks Randheer but what I'd like to know is why my results are getting worse compared whit analytical whit a mesh whit more cells. I think it should be the oposite. Thanks.
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Old   February 22, 2005, 03:38
Default Re: Laminar pipe flow
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Randheer Yadav
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Have u attached boundary layer on the inner surface of the pipe?. If not then please try it. I think this should give u more accurate solution than making grids finer.
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Old   February 24, 2005, 09:14
Default Re: Laminar pipe flow
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manivannan
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how will be affect cavitation for this flow

and also difference between laminar and turbulent flow
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Old   December 5, 2014, 06:00
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Arta Lotfi
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Quote:
Originally Posted by Randheer Yadav
;118037
please don't go for the residuals because they often create confusion. Better you check the results with analytical solutions. Here is one link of cornell university. You will find the "laminar flow in pipe". go through it and i hope u will be happy. http://instruct1.cit.cornell.edu/courses/fluent/ bye
hi,
could you mail this file for me please? , i cant open it
thanks
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