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

temperature profile on boundary

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

Reply
 
LinkBack Thread Tools Display Modes
Old   November 18, 2002, 13:30
Default temperature profile on boundary
  #1
sivakumar
Guest
 
Posts: n/a
Hi all, I am having a problem with imposing a varying temperature profile on wall(2d pipe flow).The profile is wall is 153 cm long with temperature going from 900 - 1400k in 0 - 18 cm(linearly) constant at 1400k in 18 - 44cm 1400 - 700k in 44 - 60 cm(linearly) constant at 700k in 60 - 153cm I try to put this by splitting the wall into 4 different zones. The resulting temperature profile in the reactor matches the wall profile except for the first zone, where the temperature is limited to 1 k by fluent. Can anybody give me some ideas to overcome this. I would really apprecate the help. thanks in advance, sivakumar
  Reply With Quote

Old   November 18, 2002, 21:35
Default Re: temperature profile on boundary
  #2
zhhuang
Guest
 
Posts: n/a
Did you read the UDF help?you can solve it by the help of UDF
  Reply With Quote

Old   November 19, 2002, 02:21
Default Re: temperature profile on boundary
  #3
sivakumar
Guest
 
Posts: n/a
hi zhhuang, can you be more specific please. iam using udf to introduce the linear profiles, while i suggest constant temperature on the other two zones. thank you, sivakumar
  Reply With Quote

Old   November 19, 2002, 03:22
Default Re: temperature profile on boundary
  #4
zhhuang
Guest
 
Posts: n/a
I believe you can find the details in the UDF manul
  Reply With Quote

Old   November 19, 2002, 07:14
Default Re: temperature profile on boundary
  #5
Rahul Hiwale
Guest
 
Posts: n/a
Hi I believe you need not to split in single UDF itself you can give temp profile. As your model is 2 D problem is again simple. assume your wall start at origin and paralel to one axis. Follow this step in UDF 1. Read location of each thread .(loc) 2 Compare it with your controling location a .if it less than 18 then temp will be 900 + 500*loc/18 simlarly you can specify temp for other locations. If you need more help reply Rahul

  Reply With Quote

Old   November 24, 2002, 01:58
Default Re: temperature profile on boundary
  #6
mahdi saniee nezhad
Guest
 
Posts: n/a
Dear sir I have a problem with this title. If it's possible for you please send me your received responses. Very thanks for your attention to my request. With the best regards. Mahdi saniee nezhad

  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
Boundary layer profile at inlet for cavity study in fluent uea Main CFD Forum 0 May 14, 2011 13:01
Import problem ARC Open Source Meshers: Gmsh, Netgen, CGNS, ... 0 February 27, 2010 11:56
Convective Heat Transfer - Heat Exchanger Mark CFX 6 November 15, 2004 16:55
Multicomponent fluid Andrea CFX 2 October 11, 2004 05:12


All times are GMT -4. The time now is 17:40.