[Duy Le]

Hi,

I am running a LES FireFoam simulation with the fvDOM radiation model with a constant coefficient soot model for a compartment fire, using liquid n-dodecane (C12H26) as the fuel. I looked at the tutorial for Small Pool Fire (2D/3D) and saw that they have Temperature dependent Grey Mean Absoprtion Emission Coefficients for spectral radiation for CO2, H2O, CH4, N2, and O2 species (defined in radiationProperties). However, I am not using CH4 as the fuel. I was wondering if someone knows where I can obtain the coefficients for C12H26? Please advise.

C12H26
    {
        Tcommon         200;
        Tlow            200;
        Thigh           2500;
        invTemp         false;

        loTcoeffs
        (
            0
            0
            0
            0
            0
            0
        );
        hiTcoeffs
        (
            What goes here?
        );
    }

[omid20110]

Hello all,
I have the same question as mentioned at this topic.
Can anyone tell me what's the answer? My fuel is C7H16
Also can some one explain about this model (greyMeanAbsorptionEmission)

[chun001]

Originally Posted by Duy Le

Hi,

I am running a LES FireFoam simulation with the fvDOM radiation model with a constant coefficient soot model for a compartment fire, using liquid n-dodecane (C12H26) as the fuel. I looked at the tutorial for Small Pool Fire (2D/3D) and saw that they have Temperature dependent Grey Mean Absoprtion Emission Coefficients for spectral radiation for CO2, H2O, CH4, N2, and O2 species (defined in radiationProperties). However, I am not using CH4 as the fuel. I was wondering if someone knows where I can obtain the coefficients for C12H26? Please advise.

C12H26
    {
        Tcommon         200;
        Tlow            200;
        Thigh           2500;
        invTemp         false;

        loTcoeffs
        (
            0
            0
            0
            0
            0
            0
        );
        hiTcoeffs
        (
            What goes here?
        );
    }

Originally Posted by omid20110

Hello all,
I have the same question as mentioned at this topic.
Can anyone tell me what's the answer? My fuel is C7H16
Also can some one explain about this model (greyMeanAbsorptionEmission)

Have you slove this problem?

[omid20110]

Originally Posted by chun001

Have you slove this problem?

Yes I have found the coefficients for H2O, CO2 and C7H16 from the papers

[Shlok]

Did anyone find the coefficient database? or can I use any other absorption model whose coefficients are easily obtainable.