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

Heat transfer through pipe wall

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

Like Tree1Likes
  • 1 Post By delaneyluke

Reply
 
LinkBack Thread Tools Display Modes
Old   June 4, 2013, 10:51
Default Heat transfer through pipe wall
  #1
New Member
 
sheikh
Join Date: Apr 2013
Posts: 16
Rep Power: 5
billue123 is on a distinguished road
I am designing a gas water heater. i have modelled and meshed the whole structure. unfortunately the flue gases which are at a temprature of 750K do not seem to heat up the water through the wall. the temperature of the water remain at 303K at 2.5sec to 1min. Please help me in this regard kindly. what options in the wall must i select "on" so that heat is transfered through it to the water
thanks
billue123 is offline   Reply With Quote

Old   June 4, 2013, 14:58
Default
  #2
Senior Member
 
Join Date: Mar 2009
Location: Indiana, US
Posts: 185
Rep Power: 9
delaneyluke is on a distinguished road
Your walls (between the flue gas and pipe and water) should be defined as coupled walls

Regards
Luke
billue123 likes this.
delaneyluke is offline   Reply With Quote

Old   June 4, 2013, 15:41
Default
  #3
New Member
 
sheikh
Join Date: Apr 2013
Posts: 16
Rep Power: 5
billue123 is on a distinguished road
how can i define it as couple wall? in the fluent on the option of wall comes?
billue123 is offline   Reply With Quote

Old   June 4, 2013, 16:59
Default
  #4
Senior Member
 
Join Date: Mar 2009
Location: Indiana, US
Posts: 185
Rep Power: 9
delaneyluke is on a distinguished road
Yes it is an option in wall BC screen, i think under the Temperature tab

Regards
Luke
delaneyluke is offline   Reply With Quote

Old   June 5, 2013, 03:15
Default
  #5
New Member
 
sheikh
Join Date: Apr 2013
Posts: 16
Rep Power: 5
billue123 is on a distinguished road
unfortunately i can not find such option. the options available to me are as follow in the picture shown.kindly please help
Attached Images
File Type: jpg ansys.jpg (36.5 KB, 13 views)
billue123 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
Syntax errors with Thread Types and Wall Heat Transfer calculation jcespada Fluent UDF and Scheme Programming 2 March 16, 2012 03:23
Heat transfer BC at wall- why need wall thickness? Julie FLUENT 7 February 3, 2012 22:41
Pipe Flow Heat Transfer Saima CFX 5 January 30, 2011 17:41
Heat Transfer in a pipe flow(hot air) Saima Main CFD Forum 0 January 17, 2011 08:08
Wall heat transfer coefficient (HTC) problem Mohamed khamis CFX 1 January 16, 2010 00:12


All times are GMT -4. The time now is 17:14.