CFD Online Logo CFD Online URL
Home > Forums > CFX

how to find property for compressible flow

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

LinkBack Thread Tools Display Modes
Old   August 1, 2009, 16:24
Default how to find property for compressible flow
Join Date: Mar 2009
Location: chennai
Posts: 56
Rep Power: 8
jai is on a distinguished road
as of now i assumed that my flow is incompressible and ran the problem.
I'm simulating turbo machine problem.
i would like to simulate compressible(real) model in my problem.

I'm simulating turbine problem. so pressure, temperature and density at inlet to outlet vary. i know the pressure and temperature at in & outlet. using some general relationship i could find the density at in & outlet.

how do i find the varying property(density) of fluid through out the domain?

In cfx solver we are giving property of fluid with respect to standard temperature (ex:25C).
if my problem is about 500c means solver may automatically calculate the property for this temperature?
if it won't means how or where do i get it?
jai is offline   Reply With Quote

Old   August 2, 2009, 18:54
Super Moderator
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 11,050
Rep Power: 86
ghorrocks has a spectacular aura aboutghorrocks has a spectacular aura aboutghorrocks has a spectacular aura about
Sounds like you should look at the tutorial titled "Flow in an axial rotor-stator". This will show how this sort of simulation should be set up. While you are reading have a look in the best practices guide for turbomachinery, also in the documentation.

Glenn Horrocks
ghorrocks is offline   Reply With Quote

Old   August 3, 2009, 21:09
Senior Member
Bharath kumar
Join Date: Apr 2009
Posts: 157
Rep Power: 8
bharath is on a distinguished road
you have to use CEL function to vary the fluid property.think first is it needed for your problem?
bharath 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
benchmark: flow over a circular cylinder goodegg Main CFD Forum 12 January 22, 2013 12:47
FFT on flow field to find peaks? CFDtoy Main CFD Forum 17 June 7, 2011 06:34
Errors running allwmake in OpenFOAM141dev with WM_COMPILE_OPTION%3ddebug unoder OpenFOAM Installation 11 January 30, 2008 21:30
About the invisd flow around an airfoil maximus Main CFD Forum 1 July 16, 2005 15:04
Help: Poiseulle flow benchmariking Mohammad Kermani Main CFD Forum 1 November 12, 1999 17:15

All times are GMT -4. The time now is 06:26.