CFD Online Logo CFD Online URL
Home > Forums > Software User Forums > ANSYS > CFX

set the pressure on a whole subdomain

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

LinkBack Thread Tools Display Modes
Old   May 18, 2006, 03:00
Default set the pressure on a whole subdomain
Posts: n/a
Hi. It's the first time I am working on CFX. I am using CFX 5.7.1 I want to set the value of the pressure and the temperature on a whole subdomain. These value are in .csv file How can I make to do that? The main problem for me, is: how to set the pressure and the temperature on a subdomain?

Thanks, Nicolas

  Reply With Quote

Old   May 18, 2006, 08:54
Default Re: set the pressure on a whole subdomain
Posts: n/a
You can add a source term and source coefficient to the energy equation in the subdomain to maintain a fixed temperature. For example, use the follow expressions:



Scoeff = -1000000 [W m^-3 K^-1]

Sterm = Scoeff * (T - 325 [K])


Scoeff is just any big number; the bigger it gets, the stronger the correction source will become.

Pressure is part of the solution and there is no such thing as a pressure source term, so you cannot control pressure in a similar way. Mike

  Reply With Quote


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
How to show the transient case? H.P.LIU Phoenics 7 July 13, 2010 04:31
UDF to define or adjust pressure??? engahmed FLUENT 0 July 6, 2010 17:19
How to read pressure at discrete points paka OpenFOAM 15 July 21, 2008 05:03
Does star cd takes reference pressure? monica Siemens 1 April 19, 2007 11:26
Setting pressure and velocity in inlet Asghari FLUENT 5 September 22, 2006 13:23

All times are GMT -4. The time now is 20:28.