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

Questions about conjugate heat transfer

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

Reply
 
LinkBack Thread Tools Display Modes
Old   June 19, 2002, 16:41
Default Questions about conjugate heat transfer
  #1
Leo
Guest
 
Posts: n/a
Hello,

I am solving a conjugate heat transfer problem which is just like heating a hotdog in the stove,--the hotdog (surrounded by fluids) also has a direct contact to the heating wall.

My question is:

How to define initial condition for the fluids and solid since they have different intial value?

How to define the condition for the interface between fuids/solid? ( I am using a DO model for the radiation)

  Reply With Quote

Old   June 20, 2002, 00:10
Default Re: Questions about conjugate heat transfer
  #2
Jin-Wook LEE
Guest
 
Posts: n/a
Ans. to 1st Q : SOLVE --> INITIALIZE --> PARCH

Ans. to 2nd Q : You do not need to define the condition at the Fluent. You should set the region as SOLID and FLUID separately when you generate the grids by GAMBIT. Then, solver(Fluent) treats the interface, not by user(you).

Sincerely, Jinwook

  Reply With Quote

Old   June 20, 2002, 00:19
Default Re: Questions about conjugate heat transfer
  #3
Leo
Guest
 
Posts: n/a
but I still need to set up the solid walls for the DO radiation model, any idea?

Thanks a lot
  Reply With Quote

Old   July 19, 2002, 11:19
Default Re: Questions about conjugate heat transfer
  #4
Puck
Guest
 
Posts: n/a
My problem is similar to yours except that i have to attach an insulation material of thickness 1mm inside the center of the anuulus duct...(meaning the annulus is a solid, whereas inside the annulus is fluid..this is where i attach a solid support to block air flow). so when i define the insulation material as solid pf a diff material and the annulus as solid but of a diff material, i seem to get phase domain error when i run in fluent.. I suspect cos fluent has trouble recognising the interface(the edge) where both the solid regions intersect..How do i solve this?
  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
Heat Flux at wall in a conjugate heat transfer problem Chander CFX 2 July 9, 2011 22:22
Convective / Conductive Heat Transfer in Hypersonic flows enigma Main CFD Forum 2 November 1, 2009 22:53
Conjugate heat transfer and radiation modeling questions shankara.2 FLUENT 0 April 21, 2009 15:55
Conjugate heat transfer problem with porous media piko CD-adapco 1 April 17, 2009 15:41
Convective Heat Transfer - Heat Exchanger Mark CFX 6 November 15, 2004 15:55


All times are GMT -4. The time now is 04:20.