OpenFOAM and twisted flow in cyclone unit

rv82 · February 22, 2012, 00:17

Hi All!
I have a problem with OpenFOAM. I'm trying to simulate the twisted flow in a cyclone unit. Results of OF’s work (fig. 1) different from the results obtained in Fluent and experiment. (fig. 2). Tell me please, what am I doing wrong?

rv82 · March 23, 2012, 03:27

Hello-o-o-o!
Did somebody simulate twisted flow in cyclone with OpenFOAM?
Need your help!

linnemann · March 23, 2012, 03:43

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.

ShashiDeSilva · January 9, 2016, 22:20

Quote:

Originally Posted by rv82

Hi All!
I have a problem with OpenFOAM. I'm trying to simulate the twisted flow in a cyclone unit. Results of OF’s 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

rv82 · January 9, 2016, 23:54

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.

ShashiDeSilva · January 10, 2016, 05:38

Dear Roman,

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

February 22, 2012, 00:17	OpenFOAM and twisted flow in cyclone unit	#1
rv82 New Member Roman Voronov Join Date: May 2010 Location: Russia Posts: 13 Rep Power: 16	Hi All! I have a problem with OpenFOAM. I'm trying to simulate the twisted flow in a cyclone unit. Results of OF’s work (fig. 1) different from the results obtained in Fluent and experiment. (fig. 2). Tell me please, what am I doing wrong?

March 23, 2012, 03:43		#3
linnemann Senior Member Niels Nielsen Join Date: Mar 2009 Location: NJ - Denmark Posts: 556 Rep Power: 27	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. __________________ Linnemann PS. I do not do personal support, so please post in the forums.

March 23, 2012, 03:27		#2
rv82 New Member Roman Voronov Join Date: May 2010 Location: Russia Posts: 13 Rep Power: 16	Hello-o-o-o! Did somebody simulate twisted flow in cyclone with OpenFOAM? Need your help!

January 9, 2016, 23:54		#5
rv82 New Member Roman Voronov Join Date: May 2010 Location: Russia Posts: 13 Rep Power: 16	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.

January 10, 2016, 05:38		#6
ShashiDeSilva New Member Shashi De Silva Join Date: Jul 2013 Location: Colombo, Sri Lanka Posts: 4 Rep Power: 13	Dear Roman, Thank you very much for your quick reply, I will try as you suggested.