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openfoam chtMultiRegionSimpleFoam gives rho always equals to 1

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Old   January 6, 2023, 10:51
Default openfoam chtMultiRegionSimpleFoam gives rho always equals to 1
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Hello,
I have an issue while using chtMultiRegionSimpleFoam on a very simple geometry with a 'solid' porous zone in the middle of a pipe where air is passing.

I set the air inlet condition as below:

Code:
U/ inlet
	{
		type  		flowRateInletVelocity;
		massFlowRate    $airMflowRate;
		value 		uniform (0 0 0);
		rho                   rho;
		rhoInlet            $rhoInf;
	}

T/ inlet
    {
        type            fixedValue;
        value           uniform $Tairin;
    }
with
rhoInf = 0.36; // kg/m3
airMflowRate = 0.19; // kg/s
Tairin = 890; // K

and the thermophysicalProperties for the air as below:
Code:
thermoType
{
    type            heRhoThermo;
    mixture         pureMixture;
    transport       const;
    thermo          hConst;
    equationOfState perfectGas;
    specie          specie;
    energy          sensibleEnthalpy;
}
when I open the case in paraview I can see rho = 1 everywhere while I expect to see it around 0.36.

What could be wrong here ?

Thanks
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