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FSD combustion model with a mixture of methane and hydrogen for fuel

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Old   January 14, 2014, 12:56
Default FSD combustion model with a mixture of methane and hydrogen for fuel
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Bobi
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Dear foamers

I want to simulate a flame with a mixture of methane and hydrogen as a fuel. my problem is determining relaxation coefficients for FSD Coefficients and also it seems that this model gets one fuel (Methane or Hydrogen) as a fuel. The followings are the lines in combustion properties file that I have problem with filling, for the mixture of hydrogen and methane:
Code:
FSDCoeffs
{
    semiImplicit no;
    Cv          0.1;
    ftVarMin    1e-2;

    reactionRateFlameArea relaxation;

    fuel               Methane;
    
    relaxationCoeffs
    {
        C                     2.0;
        alpha                 1.0;
        Methane
        {
            omega0            0.5;
            eta               -0.013;
            omegaMin          0.01;
            sigmaExt          470;
        }

	Propane
        {
            omega0            0.4;
            eta               -0.00656;
            omegaMin          0.01;
            sigmaExt          450;
        }
    }
}
Any hint is appreciated.

Regards
Bobi
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