[adorabat]

Hello foamers!
I'm new in OpenFOAM and i want to simulate hypersonic flow around blunt body with multi(N2, O2, Ar) gases.

To simulate this problem, I found that i should set my thermophysicalProperties file with multiComponentMixture. Following is my thermophysicalProperties file.

/*--------------------------------*- C++ -*----------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration | Website: https://openfoam.org
\\ / A nd | Version: 8
\\/ M anipulation |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
class dictionary;
location "constant";
object thermophysicalProperties;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

thermoType
{
type hePsiThermo;
mixture multiComponentMixture;
transport sutherland;
thermo hConst;
equationOfState perfectGas;
specie specie;
energy sensibleInternalEnergy;
}



species

(
Ar
O2
N2
);


// normalised gas

Ar
{
specie
{
nMoles 1;
molWeight 39.948;
}
thermodynamics
{
Tlow 1;
Thigh 5000;
Cp 2.5;
Hf 0;
}
transport
{
As 1.67212e-06;
Ts 170.672;

Pr 1;
}
}

O2
{
specie
{
nMoles 1;
molWeight 32;
}
thermodynamics
{
Tlow 1;
Thigh 5000;
Cp 2.5;
Hf 0;
}
transport
{
As 1.67212e-06;
Ts 170.672;

Pr 1;
}
}

N2
{
specie
{
nMoles 1;
molWeight 28;
}
thermodynamics
{
Tlow 1;
Thigh 5000;
Cp 2.5;
Hf 0;
}
transport
{
As 1.67212e-06;
Ts 170.672;

Pr 1;
}
}


Then I enter the rhoCentralFoam in my terminal but the message was like this.
And nothing happened.

Selecting thermodynamics package
{
type hePsiThermo;
mixture multiComponentMixture;
transport sutherland;
thermo hConst;
equationOfState perfectGas;
specie specie;
energy sensibleInternalEnergy;
}

I cannot realize my mistake.
Thanks for the advice in advance, It will be very thankful to let me know how could I set my thermophysicalProperties properly.

[clapointe]

rhoCentralFoam, as released, is not built to run with that thermo setup -- there likely was a long message about the types of thermo that rhoCentralFoam can use. There are various threads about updating rhoCentralFoam to include this capability (e.g., Transport of chemical species in rhoCentralFoam), but if you're interested in hypersonic flow you might want to check out hyFoam (https://github.com/vincentcasseau/hyStrath).

Caelan

[adorabat]

Thank you Caelan.

I'll check about rhoCentralFoam and hyFoam too.

Thanks a lot!!

Kim