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sonicFoam: Supported energy type is e, thermodynamics package provides h

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Old   March 3, 2021, 17:58
Default sonicFoam: Supported energy type is e, thermodynamics package provides h
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Dear Foamers,

I have been working with sonicFoam to get the pressure drop of a sonic flow. The default settings uses perfectGas as the equation of state:

Code:
thermoType
{
    type            hePsiThermo;
    mixture         pureMixture;
    transport       const;
    thermo          hConst;
    equationOfState perfectGas;
    specie          specie;
    energy          sensibleInternalEnergy;
}
Consequently, the pressure drop values were very low. Therefore, I decided to switch to Peng-Robinson and according to the allowed combinations changed the thermoType to:

Code:
thermoType
{
    type            hePsiThermo;
    mixture         pureMixture;
    transport       sutherland;
    thermo          hConst;
    equationOfState PengRobinsonGas;
    specie          specie;
    energy          sensibleEnthalpy;
}

However, it returns the following error:

Code:
--> FOAM FATAL ERROR: 
Supported energy type is e, thermodynamics package provides h
I tried with sensibleInternalEnergy but it also resulted in the following error:

Code:
unknown psiThermo type
Any ideas? I really appreciate any input here.

Thanks,
MJ
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Old   April 2, 2021, 07:12
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Jnana Bhaskar Rao
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It appears the sonicFoam energy equation is written for 'e', which should be internal energy. The rhoPimpleFoam solver's energy equation seems to be written for 'he' which I presume is enthalpy. I am aware that in the PIMPLE dictionary(in fvSolutions) for rhoPimpleFoam, in newer versions of OpenFoam(>6), rhoPimpleFoam can work equivalent to sonicFoam with a 'transonic' flag. Maybe this is what will work for you. Some newer OpenFoam versions have deprecated sonicFoam completely.
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openfoam v1806, pengrobinsongas, sensibleenthalpy, sonicfoam, thermotype

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