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

Heat transfer coefficent in turbulent flow

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

Reply
 
LinkBack Thread Tools Display Modes
Old   November 12, 1998, 12:49
Default Heat transfer coefficent in turbulent flow
  #1
Ola Lindgren
Guest
 
Posts: n/a
I am not so experienced in CFD calculations and are wondering how I should calculate the heat transfer coefficient from a calculation of the velocitys with k-epsilon modelling and wall laws. I don't calculate the temperature so i must use the velocity to get the heat transfer coefficent. If anybody have a suggestion, please let me know.
  Reply With Quote

Old   November 14, 1998, 03:35
Default Re: Heat transfer coefficent in turbulent flow
  #2
Dr. Don I anyanwu
Guest
 
Posts: n/a
I am looking for a job but, if you can hire me I shall be of good help to you.

Thanks.
  Reply With Quote

Old   November 17, 1998, 06:49
Default Re: Heat transfer coefficent in turbulent flow
  #3
Jonas Bredberg
Guest
 
Posts: n/a
Hi,

I might have an answer you don't like. Calculate the temperature field and resolve the turbulent quantities down to the wall, without using any wall functions - then you may get a chance of predicting the heat transfer with some accuracy. Otherwise take a look in a Heat Transfer Handbook, they have a lot of correlations using Reynols number and Prandtl number. Whether your case is included I wouldn't know. I do heat transfer (and flowfield) predictions in ribbed duct, which are rotating, similar do what you found inside a turbine blade (in gas turbines).

Hope this could have help you, eventhough it wasn't the answer you was looking for,

Cheers Jonas
  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
Water subcooled boiling Attesz CFX 7 January 5, 2013 04:32
Double layer Microchannel - Flow and Heat transfer priyanka.asp FLUENT 0 September 7, 2010 20:04
heat transfer probs by transonic flow Josh_Blue FLUENT 8 March 21, 2010 06:31
2d Heat transfer external flow Richard belcher CFX 1 August 4, 2008 21:42
Natural convection - Inlet boundary condition max91 CFX 1 July 29, 2008 20:28


All times are GMT -4. The time now is 00:24.