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

how to define boundary condition for 3d computer

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

Reply
 
LinkBack Thread Tools Display Modes
Old   October 16, 2008, 10:31
Default how to define boundary condition for 3d computer
  #1
juju
Guest
 
Posts: n/a
hello there, can anyone help me to define the correct boundary condition for 3d desktop computeer.

when i run this model in fluent it show the temperature around the casing not inside the component.

please help me....

regards juju
  Reply With Quote

Old   October 17, 2008, 10:02
Default Re: how to define boundary condition for 3d comput
  #2
doki
Guest
 
Posts: n/a
well what type of geometry you have chosen? if inside the geometry have not been meshed, so there would be no result for that region to show! if the geometry is meshed, usually it is defined as a separate zone and the display is done as normal.
  Reply With Quote

Old   October 17, 2008, 10:07
Default Re: how to define boundary condition for 3d comput
  #3
juju
Guest
 
Posts: n/a
thank doki, now i working to finish my degree research about heat transfer simulation in a desktop computer with heat generating components. in gambit i define boundary condition

inlet-velocity inlet

hdd-wall

fdd-wall

cdr-wall

cpu-wall

mboard-wall

outlet-pressure outlet ok..then i transfer into fluent n run i didn't get exact result.the simulation give no aiirflow and not reasonable.

  Reply With Quote

Old   October 18, 2008, 02:32
Default Re: how to define boundary condition for 3d comput
  #4
doki
Guest
 
Posts: n/a
well maybe there is not enough momentum to generate a flow, or the solution have not progressed well. also the solution is sensible to large mesh sizes.
  Reply With Quote

Old   October 19, 2008, 10:23
Default Re: how to define boundary condition for 3d comput
  #5
juju
Guest
 
Posts: n/a
so the radiant should be involve in this model u think

  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 define a dynamic Boundary Condition? abrahamgx CFX 2 March 10, 2009 00:03
How to define a dynamic Boundary Condition? (New) abrahamgx CFX 2 March 9, 2009 08:43
How to define boundary condition for UDS ? Joesphe FLUENT 0 May 22, 2007 15:35
How to define the boundary condition Merkle FLUENT 0 December 1, 2000 05:01
How to define boundary condition Devy FLUENT 0 November 28, 2000 04:18


All times are GMT -4. The time now is 11:31.