CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > OpenFOAM > OpenFOAM Running, Solving & CFD

OpenFOAM and twisted flow in cyclone unit

Register Blogs Members List Search Today's Posts Mark Forums Read

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   February 22, 2012, 00:17
Default OpenFOAM and twisted flow in cyclone unit
  #1
New Member
 
Roman Voronov
Join Date: May 2010
Location: Russia
Posts: 13
Rep Power: 15
rv82 is on a distinguished road
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 is offline   Reply With Quote

Old   March 23, 2012, 03:27
Default
  #2
New Member
 
Roman Voronov
Join Date: May 2010
Location: Russia
Posts: 13
Rep Power: 15
rv82 is on a distinguished road
Hello-o-o-o!
Did somebody simulate twisted flow in cyclone with OpenFOAM?
Need your help!
rv82 is offline   Reply With Quote

Old   March 23, 2012, 03:43
Default
  #3
Senior Member
 
linnemann's Avatar
 
Niels Nielsen
Join Date: Mar 2009
Location: NJ - Denmark
Posts: 555
Rep Power: 27
linnemann will become famous soon enough
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.
linnemann is offline   Reply With Quote

Old   January 9, 2016, 22:20
Default
  #4
New Member
 
Shashi De Silva
Join Date: Jul 2013
Location: Colombo, Sri Lanka
Posts: 4
Rep Power: 12
ShashiDeSilva is on a distinguished road
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 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
ShashiDeSilva is offline   Reply With Quote

Old   January 9, 2016, 23:54
Default
  #5
New Member
 
Roman Voronov
Join Date: May 2010
Location: Russia
Posts: 13
Rep Power: 15
rv82 is on a distinguished road
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.
rv82 is offline   Reply With Quote

Old   January 10, 2016, 05:38
Default
  #6
New Member
 
Shashi De Silva
Join Date: Jul 2013
Location: Colombo, Sri Lanka
Posts: 4
Rep Power: 12
ShashiDeSilva is on a distinguished road
Dear Roman,

Thank you very much for your quick reply, I will try as you suggested.
ShashiDeSilva is offline   Reply With Quote

Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On



All times are GMT -4. The time now is 20:02.