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

flux panel

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

Reply
 
LinkBack Thread Tools Display Modes
Old   April 12, 2009, 00:44
Default flux panel
  #1
Member
 
amar
Join Date: Mar 2009
Posts: 31
Rep Power: 7
amar is on a distinguished road
Hello dear all

I'd like to know what is "net" in the Report---->flux panel refer to?

Thanks a lot
amar is offline   Reply With Quote

Old   April 14, 2009, 01:10
Default
  #2
Super Moderator
 
-mAx-'s Avatar
 
Maxime Perelli
Join Date: Mar 2009
Location: Switzerland
Posts: 2,818
Rep Power: 29
-mAx- will become famous soon enough
this is the sum of the fluxes selected
-mAx- is offline   Reply With Quote

Old   April 14, 2009, 21:31
Default
  #3
Member
 
amar
Join Date: Mar 2009
Posts: 31
Rep Power: 7
amar is on a distinguished road
Dear

Thanks for your reply
Sorry but in fluent's help it is mentioned that the number in the "net" is the sum of all values above but also if you have chosen the mass flow rate it refers to mass flow rate imbalance test and the same if you have chosen the total heat transfer rate it will refer to energy imbalance test, so please do you know what is the maximum limit for "net".

I appropriate your reply
thanks
amar is offline   Reply With Quote

Old   April 15, 2009, 00:43
Default
  #4
Super Moderator
 
-mAx-'s Avatar
 
Maxime Perelli
Join Date: Mar 2009
Location: Switzerland
Posts: 2,818
Rep Power: 29
-mAx- will become famous soon enough
What do you mean with limit?

From 6.3 Help:
-------------

The steps for generating the report are as follows:
1. Specify which flux computation you are interested in by selecting Mass Flow Rate, Total Heat Transfer Rate, or Radiation Heat Transfer Rate under Options.
2. In the Boundaries list, choose the boundary zone(s) on which you want to report fluxes.
3. Click on the Compute button. The Results list will display the results of the selected flux computation for each selected boundary zone, and the box below the Results list will show the summation of the individual zone flux results.
-mAx- is offline   Reply With Quote

Old   April 15, 2009, 06:07
Default
  #5
Member
 
amar
Join Date: Mar 2009
Posts: 31
Rep Power: 7
amar is on a distinguished road
Hello dear

Actually I know these steps and may be I didn't explain well. If you could see in Tutorial Guide pdf file in FLUENT help page 1-26, 1-27, 4-19, 5-23 and other pages. it is mentioned in the last point.
May question is what is the maximum number should appear in the "net", and is there a mathematical solution to specify the imbalance test or I direct take the "net" as the imbalance test.

Thanks for your continuous reply
amar is offline   Reply With Quote

Old   April 15, 2009, 06:25
Default
  #6
Super Moderator
 
-mAx-'s Avatar
 
Maxime Perelli
Join Date: Mar 2009
Location: Switzerland
Posts: 2,818
Rep Power: 29
-mAx- will become famous soon enough
ok I see what you mean.
You want to know if there is a limit for the imbalance (0.2%)
In this case, it's up to you, there is no guidelines about it.
The "net" is the imbalance of your computation, and also it will give you an idea of a good convergence (or not)
-mAx- is offline   Reply With Quote

Old   April 15, 2009, 06:39
Default
  #7
Member
 
amar
Join Date: Mar 2009
Posts: 31
Rep Power: 7
amar is on a distinguished road
Yes you are right, but how to be sure because I'm a master's student and I have to support any thing I mention.
Sorry I'd like to ask you another question. Actually I'm doing a simulation on a portion of heat exchanger and I want to specify the heat transfer coefficient, do you know how, please?

Thanks a lot
amar is offline   Reply With Quote

Old   April 15, 2009, 07:11
Default
  #8
Super Moderator
 
-mAx-'s Avatar
 
Maxime Perelli
Join Date: Mar 2009
Location: Switzerland
Posts: 2,818
Rep Power: 29
-mAx- will become famous soon enough
no idea, I am not handling heat problem
post a new thread on the forum
I' pretty sure you will have replies
-mAx- is offline   Reply With Quote

Reply

Thread Tools
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 On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
3D PANEL METHOD Paolo Lampitella Main CFD Forum 12 August 27, 2014 11:46
Flux splitting Dr B.M. Smith (Smith) OpenFOAM Running, Solving & CFD 19 January 9, 2013 04:07
solar heat flux through roof Tim FLUENT 1 January 17, 2007 16:01
UDS flux and boundaries Kasper Skriver FLUENT 0 April 18, 2006 08:36
Replace periodic by inlet-outlet pair lego CFX 3 November 5, 2002 20:09


All times are GMT -4. The time now is 00:13.