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OpenFOAM and twisted flow in cyclone unit

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Old   February 22, 2012, 00:17
Default OpenFOAM and twisted flow in cyclone unit
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Roman Voronov
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Hi All!
I have a problem with OpenFOAM. I'm trying to simulate the twisted flow in a cyclone unit. Results of OFs work (fig. 1) different from the results obtained in Fluent and experiment. (fig. 2). Tell me please, what am I doing wrong?
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Old   March 23, 2012, 03:27
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Roman Voronov
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Hello-o-o-o!
Did somebody simulate twisted flow in cyclone with OpenFOAM?
Need your help!
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Old   March 23, 2012, 03:43
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Niels Nielsen
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Hi

Look here if you want to get help.

http://www.cfd-online.com/Forums/ope...tml#post350163

Your post is far to vague to give any kind of help.
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PS. I do not do personal support, so please post in the forums.
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Old   January 9, 2016, 22:20
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Shashi De Silva
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Quote:
Originally Posted by rv82 View Post
Hi All!
I have a problem with OpenFOAM. I'm trying to simulate the twisted flow in a cyclone unit. Results of OFs work (fig. 1) different from the results obtained in Fluent and experiment. (fig. 2). Tell me please, what am I doing wrong?
Hi all

Did anyone find the reason/solution for this ? I also face the same issue.I tried with different solvers like MPPICFoam, DPMFoam and rhoSimplecFoam. Non of them defined cyclone velocity profile properly. Also according to the literature there are regions where velocity is higher than the inlet velocity, in my one no such areas.

Cyclone info.
D=0.2m
mesh contain more than ~ 43632 cells.
Inlet velocity 20 m/s
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Old   January 9, 2016, 23:54
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Roman Voronov
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I have found the solution but only for simple/pimple/pisoFoam. To get normal results it's necessary to use limited schemes or linearUpwind scheme for divSchemes. Unfortunately I can't describe any details because I quit from my previous job and now I don't work with computational fluid dynamics.
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Old   January 10, 2016, 05:38
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Shashi De Silva
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Dear Roman,

Thank you very much for your quick reply, I will try as you suggested.
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