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

Free Stream Temperature in natural convection problem

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

Reply
 
LinkBack Thread Tools Display Modes
Old   January 25, 2011, 18:02
Default Free Stream Temperature in natural convection problem
  #1
New Member
 
Bobby
Join Date: Dec 2010
Posts: 21
Rep Power: 6
tomcatbobby is on a distinguished road
Hi

I've seen quite a few posts asking this questions with regards to modelling natural convection?

By the definition of free stream temperature that I understand-surely it is always changing and cannot be considered constant for modelling natural convection?

Thanks
tomcatbobby is offline   Reply With Quote

Old   January 26, 2011, 23:48
Default
  #2
Senior Member
 
Real Name :)
Join Date: Jan 2010
Location: United States
Posts: 180
Rep Power: 7
ComputerGuy is on a distinguished road
When you're modeling natural convection, you won't specify the boundary condition at the solid/fluid interface -- it's coupled heat transfer. The free-stream temperature you're citing is associated with a forced convection boundary condition.

Regards,
ComputerGuy
ComputerGuy is offline   Reply With Quote

Old   January 27, 2011, 06:41
Default
  #3
New Member
 
Bobby
Join Date: Dec 2010
Posts: 21
Rep Power: 6
tomcatbobby is on a distinguished road
I dont understand how I would set this up then. At the moment, I have two BC's. One for the wall's which is a convection coefficient and I this is where I thought I would need to to put the free stream temperature. The other BC is for the heater which is set at a fixed temperature.

Thanks
tomcatbobby is offline   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
Natural Convection problem in Fluent - urgent NSV FLUENT 10 May 6, 2014 04:25
How to solve natural convection problem in fluent? samantasubho FLUENT 7 April 17, 2014 02:07
Adiabatic and Rotating wall (Convection problem) ParodDav CFX 5 April 29, 2007 19:13
Free Stream Temperature wall boundary condition emanuele FLUENT 0 March 19, 2007 11:45
Convection problem Carlos Ortiz FLUENT 2 July 24, 2002 14:42


All times are GMT -4. The time now is 12:58.