|August 18, 2009, 01:58||
Join Date: Aug 2009
Posts: 13Rep Power: 9
There is a compressor which working in vacuum conditions. Also take N2 from 0.01 [mbar] (this is absolute pressure) and i want to model this in CFX.
My boundary conditions are;
inlet=0.01 mbar static pressure
outlet= 0.0125 kg/s
Pref= 0 [atm]
But pressure contours on CFX-Post i see negative pressure values about -2.5 [bar] this is physically not valid. Because environment is 0.01 [mbar] absolute pressure.
Does anyone have a suggestion for me?
|August 18, 2009, 18:20||
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 12,638Rep Power: 98
I assume you are running a compressible flow. I can't see how you would get negative absolute pressures as the density is undefined and therefore the solver would diverge. Are you sure you have your reference pressure set correctly?
|Thread||Thread Starter||Forum||Replies||Last Post|
|Rotor 67 full compressor geometry||jf||Main CFD Forum||1||May 26, 2015 10:48|
|Echardt compressor||Abdul Nassar||FLUENT||0||November 2, 2005 16:00|
|Stage Interface Without Frame Change||Vikram||CFX||2||October 21, 2005 04:55|
|How to mesh structured grid of a compressor stage||ann||FLUENT||2||January 4, 2003 23:29|
|CFD Problem: volumetric compressor||Gabriele Velenich||Main CFD Forum||2||July 2, 2001 08:15|