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

inlet temperature = outlet temperature

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

Reply
 
LinkBack Thread Tools Display Modes
Old   March 17, 2006, 04:59
Default inlet temperature = outlet temperature
  #1
Thierry
Guest
 
Posts: n/a
Hi !

Anyone knows how to set as inlet temperature (in a velocty inlet bc) the value of the outlet temperature (mass weighted average) during the computation ? UDF ? Scheme in command ??

ThanX
  Reply With Quote

Old   March 17, 2006, 09:36
Default Re: inlet temperature = outlet temperature
  #2
RoM
Guest
 
Posts: n/a
Is there any particular reason for this? From a very simple point of view one could argue: inlet temp. = outlet temp. -> adiabatic case -> no need to solve energy equation at all.

RoM
  Reply With Quote

Old   March 17, 2006, 10:34
Default Re: inlet temperature = outlet temperature
  #3
Thierry
Guest
 
Posts: n/a
It is not an adiabatic case at all. In fact, I want to simulate the flow in a cavity with many walls with different temperatures. Moreover, I would like to set the inlet temperature (in my velocity-inlet condition) as the value of the outlet temperature, which is unkwown before solving the case ! I want to do this because in the real life, the outlet of my cavity is connected to its inlet...but I don't simulate that. OK, I can do this manually, but I would prefer an automatic process. Any idea ??

ThanX

  Reply With Quote

Old   March 17, 2006, 10:58
Default Re: inlet temperature = outlet temperature
  #4
RoM
Guest
 
Posts: n/a
In this case a DEFINE_PROFILE udf can do the job. If radiation is involved in your calculation you should be very careful while setting a temperature with DEFINE_PROFILE. Your solution will probably diverge if the temperature changes are too high.

Good Luck, RoM
  Reply With Quote

Old   March 17, 2006, 11:14
Default Re: inlet temperature = outlet temperature
  #5
Thierry
Guest
 
Posts: n/a
Thank you very much...I will try this.

Thierry.
  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
Net mass flow inlet vs outlet Nigui28 FLUENT 1 August 12, 2011 10:09
Laval Nozzle sonicFoam inlet and outlet bc BernhardGrieser OpenFOAM Running, Solving & CFD 9 August 14, 2010 21:35
Compressible flow, no data at the outlet mireis FLUENT 1 July 28, 2010 05:22
pressure inlet & outlet. help ASAP Plz engahmed Main CFD Forum 0 June 13, 2010 15:34
what the result is negatif pressure at inlet chong chee nan FLUENT 0 December 29, 2001 06:13


All times are GMT -4. The time now is 05:19.