CFD Online Logo CFD Online URL
Home > Forums > FLUENT

Consideration of source term

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

LinkBack Thread Tools Display Modes
Old   August 27, 2005, 01:21
Default Consideration of source term
Posts: n/a

This is regarding a simple fluid flow problem with just a heat source in a duct.

When i use gambit as modeling and meshing tool. If i give source term only. It is giving wrong answer. The temperature term is not at all considered. Iam getting velocity and pressure distribution. But energy equation is not solved. All temperatures are same.

I want to know whether any meshing problem or error in giving Boundary conditions.

My B.C are inlet velocity and exit pressure at ambient condition.

Can you please clarify my doubt?

Thanking you

Nagarajan.V Application Engineer.

  Reply With Quote

Old   August 27, 2005, 11:27
Default Re: Consideration of source term
Posts: n/a
You have to assign such a source either thru patching or using User Defined Source (UDS). Try this with a unsteady state calculation and see the difference.

  Reply With Quote

Old   August 28, 2005, 04:55
Default Re: Consideration of source term
Posts: n/a
First you need to check the energy equation from the solver definition. Otherwise, temperature is uniform everywhere. If your heat source is on the wall, set the heat source on the wall through B.C. panel. There are three different thermal boundary conditions available. If your heat source is in the inner of the flow field (volume heat source, set the combustion or anything like radiation.
  Reply With Quote


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
momentum source term zwdi FLUENT 14 June 27, 2017 15:40
swak4foam building problem GGerber OpenFOAM Installation 54 April 24, 2015 16:02
DxFoam reader update hjasak OpenFOAM Post-Processing 69 April 24, 2008 01:24
DecomposePar links against liblamso0 with OpenMPI jens_klostermann OpenFOAM Bugs 11 June 28, 2007 17:51
UDFs for Scalar Eqn - Fluid/Solid HT Greg Perkins FLUENT 0 October 11, 2000 03:43

All times are GMT -4. The time now is 15:12.