CFD Online Logo CFD Online URL
Home > Forums > FLUENT

Modelling a fin as a wall or a face??

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

LinkBack Thread Tools Display Modes
Old   March 19, 2007, 06:07
Default Modelling a fin as a wall or a face??
Posts: n/a
Hi i am doing a heat transfer simulation for fins in a rectangular enclosure with internal fins. Inside the enclosure there is a material and I want to study the melting of this material.

My simulation requires me to apply a heat flux from the base of the enclosure.

Initially i modelled the base wall as just an edge in gambit and set it as a wall. I inputed heat flux= 10750W/m2 and thickness=0.5mm.

After that I tried modelling the base wall as a solid face(thickness=5mm). I set the inner edge and outer edge as walls. The outer wall i set heat flux=10750W/m2 and thickness=0 while the inner wall i set it at coupled(because it interfaces with another liquid material inside the enclosure), heat flux=0 & thickness=0.

However, I am getting different results for both this models!!!! Any ideas how come?
  Reply With Quote

Old   March 28, 2007, 17:19
Default Re: Modelling a fin as a wall or a face??
Seyed Farid Hosseinizadeh
Posts: n/a
Hey: I mean both of them can be correct. You mean when you add the thickness of wall get another results? I guess they must be two different results. As far as I know a fine is a surface. Thanks/Farod P.S.: I guess I didn't get exactly what are you asking about. Please let me know more.
  Reply With Quote

Old   March 29, 2007, 00:12
Default Re: Modelling a fin as a wall or a face??
Posts: n/a
Hi Farod thanks for your reply.

Basically i modelled the fin just as an edge and selects its boundary type as wall(conductive and thickness=0.5mm) But since the wall is only an edge, i am not able to see the temperature countours

Then i modelled the fin as a face(made out of 4 edges) and selected all four edges as walls. And i choose the continium as solid(aluminium)

However i am getting 2 different results...

Any ideas why?? Thanks in advance
  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
Superlinear speedup in OpenFOAM 13 msrinath80 OpenFOAM Running, Solving & CFD 18 March 3, 2015 06:36
Natural convection in a closed domain STILL NEEDING help! Yr0gErG FLUENT 3 June 12, 2013 02:12
Mixed Wall Face abir FLUENT 0 December 13, 2009 13:35
Wall Shear force - any suggestions on turbulence modelling Bo Jensen Siemens 1 February 22, 2000 13:12
Wall functions Abhijit Tilak Main CFD Forum 6 February 5, 1999 02:16

All times are GMT -4. The time now is 04:30.