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

Heat sink whith only natural convection

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

Reply
 
LinkBack Thread Tools Display Modes
Old   November 16, 2003, 07:30
Default Heat sink whith only natural convection
  #1
Novello
Guest
 
Posts: n/a
Good morning, I would to simulate a particular geometry (3D) of heat sink whith onli natural convection, I'm a new user of CFD software (I don't have still never CFD software) and I want to understand if I must be assume laminar flow or turbolent flow. In your opinion are precise and reliable the results of Fluent software for this mixed natural convection/conduction in a metal problem?

Thanks Best regards Sorry for my bad English

Novello, Italy
  Reply With Quote

Old   November 16, 2003, 21:14
Default Re: Heat sink whith only natural convection
  #2
Novello
Guest
 
Posts: n/a
sorry, my englysh is vary bad and you may don't understand my problem...

My problem is: I want to simulate an natural convection heat sink in air. I decide to use Fluent, which is the model to make in gambit? I think to create the model of heat sink (solid) ..and in which manner can I modeling the surrounding air?

Best regards

Novello, Italy
  Reply With Quote

Old   November 17, 2003, 02:40
Default Re: Heat sink whith only natural convection
  #3
ashish
Guest
 
Posts: n/a
hello Novello,

In gambit, you have to model surrounding air as well by defining it as a fluid domain. And, You have to decide the size of surrounding fluid domain, based on how much volume of fluid surrounding the heat sink is getting affected by the natural convection currents.

Bye, ashish
  Reply With Quote

Old   November 17, 2003, 07:46
Default Re: Heat sink whith only natural convection
  #4
Novello
Guest
 
Posts: n/a
Ok thanks, If V1 it's the volume of Aluminium heat sink and V2 it's a cubic larger volume that contain V1, I apply the boolean oparation V3=V2-V1, V3 is then the air volume and my system is constituted by V1 and V3. It's correct?

Thanks

Novello
  Reply With Quote

Old   November 17, 2003, 07:59
Default Re: Heat sink whith only natural convection
  #5
ashish
Guest
 
Posts: n/a
Hello Novello,

Yes, it is correct...

Bye, ashish
  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 sink in natural convection Reunion STAR-CCM+ 5 September 30, 2011 11:20
model forced convection heat transfer on a heat sink farzad FLUENT 0 September 9, 2010 14:48
Natural Convection with heat generation krishnachandranr Main CFD Forum 0 July 28, 2009 04:22
Forced convection heat transfer in heat sink Sidy FLUENT 1 October 18, 2008 03:27
natural convection heat sink D Sunil FLUENT 3 June 16, 2008 06:09


All times are GMT -4. The time now is 16:56.