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

Question on Face Temperature Gradient

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

Reply
 
LinkBack Thread Tools Display Modes
Old   June 25, 2003, 05:16
Default Question on Face Temperature Gradient
  #1
Tomasz Didenko
Guest
 
Posts: n/a
Hello

I'm a Phd student and I use Fluent software in my Doctor's degree preparation. In my doctoral I do computer modeling and simulation of laser welding and compare this results with experimental cross section of microphotography.In fluent manual, Face Macros haven't temperature gradient vector.I can't add the the _G suffix to access the tempearture gradient something like this -> F_T_G(f,t). Therefoe I'd like to ask how to compute face temperature gradient in UDF.I want to apply this face tempearture gradient to Marangoni phenomenon in specified shear.

Bye bye

Tomm.
  Reply With Quote

Old   June 27, 2003, 04:30
Default Re: Question on Face Temperature Gradient
  #2
Mcgregor
Guest
 
Posts: n/a
Hi Tomm,

If you use the F_T_M1 (i think its m1, but check the user guide)this will give you the temperature at the previous time step.

You can then calculate the gradient using (change in y value)/(change in x value).

ie. in your UDF: gradient = (F_T - F_T_M1)/(timestep size)

Hope this helps

Mc
  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
How to get the temperature gradient in CFX post Jay CFX 4 January 7, 2015 04:23
how to set periodic boundary conditions Ganesh FLUENT 13 January 22, 2014 05:11
Temperature Gradient at Wall sven OpenFOAM 7 November 1, 2010 18:25
Import problem ARC Open Source Meshers: Gmsh, Netgen, CGNS, ... 0 February 27, 2010 11:56
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 01:03.