CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > ANSYS > FLUENT

Domain size in Axial fans

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   August 24, 2010, 11:48
Default Domain size in Axial fans
  #1
New Member
 
Nitin Jain
Join Date: May 2010
Posts: 4
Rep Power: 15
nitin.jain1690 is on a distinguished road
Hi,

I was working on an axial fan geometry which is used for refrigeration and air conditioning equipment. I wanted to know as to what size of the domain should I keep so as to model the flow properly?
Are there any standards of selecting domain sizes in case of Axial fans?
nitin.jain1690 is offline   Reply With Quote

Old   August 24, 2010, 14:31
Default
  #2
Member
 
Allan Walsh
Join Date: Mar 2009
Posts: 56
Rep Power: 17
Allan Walsh is on a distinguished road
Fluent published a short application brief (Ex 143) on a model of centrifugal fan using about 1/2 million cells back in 2001. This is easy to find on the internet and may provide you with some guidance.
Allan Walsh is offline   Reply With Quote

Old   August 25, 2010, 12:34
Default
  #3
New Member
 
Nitin Jain
Join Date: May 2010
Posts: 4
Rep Power: 15
nitin.jain1690 is on a distinguished road
Hi,

thanks for your reply alan. I went through the ex143 brief of Fluent but it does not state anything that describes the domain size that they had selected for the model. They have mainly elaborated on the MRF approach and the type of mesh used.
nitin.jain1690 is offline   Reply With Quote

Old   August 25, 2010, 14:45
Default
  #4
Member
 
Allan Walsh
Join Date: Mar 2009
Posts: 56
Rep Power: 17
Allan Walsh is on a distinguished road
I'm not sure what you mean by "domain size". I assumed that you meant the number of computational cells. If you mean the physical size of the domain (i.e. in meters), that will be determined by the size of the fan and what else needs to be included in the model.
Allan Walsh is offline   Reply With Quote

Old   August 26, 2010, 00:43
Default
  #5
New Member
 
Nitin Jain
Join Date: May 2010
Posts: 4
Rep Power: 15
nitin.jain1690 is on a distinguished road
Hi,

Yes, by domain size I mean the physical size of the domain. I meant like we have the standard practice of the domain size being 2D upstream and 3D downstream in case of Valves where D is the diameter of the valve. I was wondering if we follow any such practices in case of axial fans because the first time that I performed the simulation, I got bad results so I am thinking of increasing the domain size this time.
nitin.jain1690 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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Superlinear speedup in OpenFOAM 13 msrinath80 OpenFOAM Running, Solving & CFD 18 March 3, 2015 06:36
critical error during installation of openfoam Fabio88 OpenFOAM Installation 21 June 2, 2010 04:01
OF 1.6 | Ubuntu 9.10 (64bit) | GLIBCXX_3.4.11 not found piprus OpenFOAM Installation 22 February 25, 2010 14:43
Phase locked average in run time panara OpenFOAM 2 February 20, 2008 15:37
fluent add additional zones for the mesh file SSL FLUENT 2 January 26, 2008 12:55


All times are GMT -4. The time now is 21:13.