CFD Online Logo CFD Online URL
Home > Forums > OpenFOAM Pre-Processing

gamma in "totalPressure" BC

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

LinkBack Thread Tools Display Modes
Old   May 13, 2009, 08:38
Question gamma in "totalPressure" BC
New Member
Age Nammensma
Join Date: Mar 2009
Posts: 10
Rep Power: 10
squadron is on a distinguished road
Simple question, but I just can't find it anywhere:

The gamma-term in the totalPressure BC, is that simply the specific heat ratio?

squadron is offline   Reply With Quote

Old   May 22, 2017, 02:59
Senior Member
Join Date: Jun 2011
Posts: 189
Rep Power: 8
gaza is on a distinguished road
Yest you are right:
4. compressible supersonic (\f$\gamma > 1\f$):
 69         \f[
 70             p_p = \frac{p_0}{(1 + 0.5 \psi G |U|^2)^{\frac{1}{G}}}
 71         \f]
 72         where
 73         \vartable
 74             p_p     | pressure at patch [Pa]
 75             p_0     | total pressure [Pa]
 76             \gamma  | ratio of specific heats (Cp/Cv)
 77             \psi    | compressibility [m2/s2]
 78             G       | coefficient given by \f$\frac{\gamma}{1-\gamma}\f$
 79         \endvartable
best regards
gaza 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 gamma gotang FLUENT 1 December 17, 2013 05:59
Differences between serial and parallel runs carsten OpenFOAM Bugs 11 September 12, 2008 11:16
Fundamental problem with Gamma scheme dominik_christ OpenFOAM Running, Solving & CFD 3 August 29, 2008 08:24
Error in Fluent. Gamma = 1.4------- Bug a FLUENT 2 May 9, 2008 17:21
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 00:26.