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

Considering the flow through a dense net / grid

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   July 31, 2012, 16:05
Default Considering the flow through a dense net / grid
  #1
Senior Member
 
---------
Join Date: Oct 2010
Posts: 303
Rep Power: 17
saisanthoshm88 is on a distinguished road
I have a grid like structure in the flow path and I'd like to consider it's effect with out actually meshing it.

The attached image shows the sructure / surface im talking about.

I'd like just keep it as a plane surface with out actually meshing those small holes but considering their effect by some means.

Could some one please tell me how to do this.
Attached Images
File Type: jpg flowgrid.JPG (49.4 KB, 13 views)
__________________
Best regards,
Santhosh.
saisanthoshm88 is offline   Reply With Quote

Old   August 1, 2012, 04:07
Default
  #2
Senior Member
 
Bionico's Avatar
 
Flavio
Join Date: Sep 2011
Location: Brescia, Italy
Posts: 181
Rep Power: 15
Bionico is on a distinguished road
Hi saisanthoshm88,
in the past I worked on a burner with a very dense metallic net: I modelized it with porous zone, so I suggest using it (even porous jump can be used).
See Fluent Manual for info about it (if you'll have some specific question maybe I''be able to answer )

Regards
Bionico is offline   Reply With Quote

Old   August 1, 2012, 06:58
Default
  #3
Senior Member
 
---------
Join Date: Oct 2010
Posts: 303
Rep Power: 17
saisanthoshm88 is on a distinguished road
Yaa I think the porus jump boundary condition could be used here but I didn't know how to calculate the face permeabilty and pressure jump coefficient to my case.

I don't know the velocity of flow through this perforated plate it's just lying in the flow path.

Could some one please suggest on this
__________________
Best regards,
Santhosh.

Last edited by saisanthoshm88; August 1, 2012 at 10:07.
saisanthoshm88 is offline   Reply With Quote

Old   August 1, 2012, 11:27
Default
  #4
Senior Member
 
Bionico's Avatar
 
Flavio
Join Date: Sep 2011
Location: Brescia, Italy
Posts: 181
Rep Power: 15
Bionico is on a distinguished road
Perhaps you can find some empirical correlations about velocity and pressure through a grid like yours...
Or you could model a small fraction of the system (maybe taking advantage of symmetries) and simulate it with a good mesh even for the holes
__________________
Bionico
Bionico 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
On grid independent solution for pulsatile flow David FLUENT 5 March 25, 2022 04:33
Grid independent problem for lid-driven flow dpc-buaa Main CFD Forum 0 February 22, 2011 23:24
[blockMesh] Grid generation cross flow over circular cylinder Yanma OpenFOAM Meshing & Mesh Conversion 0 July 7, 2010 09:02
Grid for swirling flow Stephen Main CFD Forum 6 October 24, 2008 18:57
computation about flow around a yawed cone Tylor Xie Main CFD Forum 0 June 9, 1999 08:33


All times are GMT -4. The time now is 01:41.