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Thermophysicalproperties dict entries

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Old   July 21, 2008, 03:06
Default Hello I am trying to figur
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srinath
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Hello

I am trying to figure out the entries in thermophysicalproperties

If i look at rhoCentralFoam/forwardStep/constant/thermophysicalproperties
I find
mixture normalisedGas 1 11640.3 2.5 0.0 0.0 1.0;
11640.3gm/mol, seems to be molecular wt of the gas
If i assume universal gas constant =8.314, and gamma = 1.4.
I can get Cp to be 2.5.
and specific gas constant to be .71424
This is consistent with a speed of sound = 1
And all seems well

If i look in rhoCentralFoam/shockTube/thermophysicalproperties i find the line

mixture air 1 28.96 1004.5 2.544e+06 0.0 1.0;

Now, 28.96gm/mol is mol. wt of air
1004.5 = Cp of air, assuming gamma =1.4
But what is 2.544e+06?

Could someone please shed some light on this?

Thanks
Srinath
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