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

thermal conductivity in conduction problem

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

Reply
 
LinkBack Thread Tools Display Modes
Old   August 23, 2007, 09:40
Default thermal conductivity in conduction problem
  #1
sangeeta
Guest
 
Posts: n/a
I am writing a code in C++ to find out the temperature profile in a 2d conduction problem.

suppose if i want to vary thermal conductivity which is the function of Coordinates, like k = x + y.

So where this function wll be added in the discritizes equation.

if k varies with temperature then i thnk ,it should as ap = an+aw+ae+as+(k);

ap = an+aw+ae+as+(aT+b).

is this right. please let me know
  Reply With Quote

Old   August 23, 2007, 09:44
Default FVM
  #2
sangeeta
Guest
 
Posts: n/a
i am solving this problem using Finite volume method, Guass Seidal method.
  Reply With Quote

Old   August 24, 2007, 13:56
Default Re: thermal conductivity in conduction problem
  #3
agg
Guest
 
Posts: n/a
In your PDE, the second order term should be d/dx(K*dT/dx)
  Reply With Quote

Old   August 27, 2007, 00:37
Default Re: thermal conductivity in conduction problem
  #4
Sangeeta
Guest
 
Posts: n/a
ya i know that but if my k varies with temperature then can u tll me the algorithm to write the code.
  Reply With Quote

Old   August 29, 2007, 04:23
Default Re: thermal conductivity in conduction problem
  #5
p
Guest
 
Posts: n/a
take care of the flux continuity at the interface (harmonic mean). see patankar for details - very well described.
  Reply With Quote

Old   August 30, 2007, 00:51
Default Re: thermal conductivity in conduction problem
  #6
Sangeeta
Guest
 
Posts: n/a
ok thanks
  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
mass flow in is not equal to mass flow out saii CFX 2 September 18, 2009 08:07
UDF for effective thermal conductivity Rashmi FLUENT 1 November 6, 2007 21:08
Viscosity and thermal conductivity Formules CPW Main CFD Forum 3 April 14, 2002 12:40
Inteface thermal conductivity ado Main CFD Forum 4 March 11, 2002 20:46
Info: Short Course On Thermal Design of Electronic Equipment Arnold Free Main CFD Forum 0 August 10, 1999 10:18


All times are GMT -4. The time now is 21:08.