CFD Online Logo CFD Online URL
Home > Forums > FLUENT

ideal or non-ideal equation of state

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

LinkBack Thread Tools Display Modes
Old   July 13, 2011, 07:09
Default ideal or non-ideal equation of state
New Member
Navid Sharifi
Join Date: Oct 2010
Location: Iran, Tehran
Posts: 10
Rep Power: 9
n.sharifi is on a distinguished road
I'm trying to use an equation of state (EOS) for a real gas with density based method for an inviscid compressible flow in a con-div nozzle.

firstly I tried to use a simple revision of real gas EOS (P = Ro*R*T) and wrote a UDF with define_property macro hooked to density in material panel.
when i run the UDF, the contour of static and total pressure will be the same.
it should be noted there is an other define_property macro hooked to sound-velocity but it has no influence on the solving procedure. because if the sound-velocity is set constant there is no differende between the solutions.

I think if we want to use a non-ideal EOS it is not sufficient to write a UDF just manipulate the density in material panel.
can any body help me
n.sharifi is offline   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
Calculation of the Governing Equations Mihail CFX 7 September 7, 2014 06:27
Constant velocity of the material Sas CFX 15 July 13, 2010 08:56
Simulation of a single bubble with a VOF-method Suzzn CFX 18 October 2, 2009 04:18
mass flow in is not equal to mass flow out saii CFX 2 September 18, 2009 08:07
Two-Phase Buoyant Flow Issue Miguel Baritto CFX 4 August 31, 2006 12:02

All times are GMT -4. The time now is 09:26.