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 squadron May 13, 2009 08:38

gamma in "totalPressure" BC

Simple question, but I just can't find it anywhere:

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

Thanks.

 gaza May 22, 2017 02:59

Yest you are right:
Code:

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

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