CFD Online Logo CFD Online URL
Home > Forums > CFX

Transient simulation - pressure shifted

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

LinkBack Thread Tools Display Modes
Old   February 14, 2006, 13:22
Default Transient simulation - pressure shifted
Posts: n/a
Hi cfx users,

I made a transient simulation and set a reference pressure to 100000 Pa. I also set a 0 Pa reference pressure at one point of the domain (under the solver control panel). When checking the result file, I notice that the pressure is shifted upward and the pressure is like 10^6 at the point where I set it to 0! And this, even if I select the option "compressible transient option = none" which is supposed to prevent the pressure from being shifted! (I just specify that my pressure is density dependent)

But it should remain to 0 anyway. Why is it like this? And why is it so difficult to handle simple things with this software? Any tips would be welcome. Thanks.

  Reply With Quote

Old   February 14, 2006, 13:42
Default Re: Transient simulation - pressure shifted
Posts: n/a
I just add that at the beginning of the run I got this message: "This is a transient run with at least one compressible fluid and no explicit pressure level set. The pressure level is implied through the transient term in the continuity equation."

Is that not enough to set the pressure under the "pressure level information" panel??? I should mention that I don't have other choice for setting a pressure level. Any suggestions?

  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
RPM in Wind Turbine Pankaj CFX 9 November 23, 2009 05:05
Synthetic (pulsatile) jet transient simulation aero CFX 0 November 6, 2009 02:10
Transient simulation Error information Li CFX 0 July 25, 2007 11:27
Transient Rotor/Stator Simulation in TASCFLOW Deepak Ganga CFX 3 June 27, 2003 02:47
transient simulation: natural convection problem? Basics CFX 3 September 25, 2002 09:42

All times are GMT -4. The time now is 23:03.