CFD Online Logo CFD Online URL
Home > Forums > FLUENT

Error in Value of Gamma

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

LinkBack Thread Tools Display Modes
Old   September 3, 2012, 12:01
Default Error in Value of Gamma
New Member
Zoe Burton
Join Date: Aug 2011
Posts: 10
Rep Power: 6
zoeburton1987 is on a distinguished road
I am currently modelling a steam turbine LP last stage in Fluent. I have been provided with a Cp, Thermal Conductivity and Viscosity from existing data (used in custom software) which I've input into the water-vapor material database entry in Fluent. I've calculated my gamma should be about 1.32 for steam and using ideal gas and setting Cp, Thermal Conductivity and Viscosity as constant, my gamma comes out at about 1.12 for my converged Fluent solution with the correct mass flow rate.

As I've been provided with temperature, total pressure and flow angle profiles at inlet and exit I am curious to know how Fluent calculates gamma in order for there to be such a significant discrepancy.

Any suggestions would be greatly appreciated.
zoeburton1987 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
Question about gamma intgerpolation scheme titio OpenFOAM Running, Solving & CFD 0 July 26, 2010 10:22
Gamma / MPI jason.ryon OpenFOAM 2 February 24, 2010 13:04
Error log OpenFOAM 6 August 7, 2009 05:44
Differences between serial and parallel runs carsten OpenFOAM Bugs 11 September 12, 2008 11:16
OpenCFD enhances OpenFOAM's parallel communications OpenFOAM discussion board administrator OpenFOAM Announcements from ESI-OpenCFD 0 October 2, 2006 08:36

All times are GMT -4. The time now is 10:12.