[dandanTT]

Hi all,

I'm setting up for sonicFoam with k-omega SST RAS, but got an error that I have no idea where it comes from.

Here is the full error message. My geometry is in a single domain, i.e. I don't think there should exist the need for region0?

--> FOAM FATAL ERROR: (openfoam-2012)

    request for dictionary transportProperties from objectRegistry region0 failed
    available objects of type dictionary are
7(MRFProperties turbulenceProperties fvSchemes fvOptions fvSolution thermophysicalProperties data)

    From const Type& Foam::objectRegistry::lookupObject(const Foam::word&, bool) const [with Type = Foam::IOdictionary]
    in file ~/OpenFOAM/OpenFOAM/OpenFOAM-v2012/src/OpenFOAM/lnInclude/objectRegistryTemplates.C at line 463.

Other than that I defined the transportProperties, thermalPhysicalProperties and turbulentProperties in folder constant. The transportProperties is attached below.

/*--------------------------------*- C++ -*----------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     | Website:  https://openfoam.org
    \\  /    A nd           | Version:  6
     \\/     M anipulation  |
\*---------------------------------------------------------------------------*/
FoamFile
{
    version     2.0;
    format      ascii;
    class       dictionary;
    location    "constant";
    object      transportProperties;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

// Transport model selection (use compressible gas model)
transportModel  sutherland;

// Sutherland model coefficients for air (for high-speed compressible flow)
SutherlandCoeffs
{
    As          1.458e-6;      // Sutherland constant (for dynamic viscosity)
    Ts          110.4;         // Sutherland temperature [K]
}

// Thermophysical properties for the gas
thermoType
{
    type            hePsiThermo;
    mixture         pureMixture;
    transport       sutherland;  // Sutherland's law for viscosity
    thermodynamics  hConst;      // Constant specific heat
    equationOfState perfectGas;  // Ideal gas law for compressible flow
    specie
    {
        molWeight   28.97;       // Molecular weight of air [g/mol]
    }
    energy          sensibleEnthalpy;
}

// Gas properties
gas
{
    molWeight   28.97;           // Molecular weight of air [g/mol]
    Cp          1005;            // Specific heat at constant pressure [J/(kg.K)]
    Hf          0;               // Enthalpy of formation (set to 0 for ideal gas)
}

// Optional properties for Prandtl numbers
Pr              0.71;            // Prandtl number (typically for air)
Prt             0.85;            // Turbulent Prandtl number

// ************************************************************************* //

Thank you all for helping.

[Yann]

Hello,

There should be no need for a transportProperties file in a compressible solver such as sonicFoam (which use thermophysicalProperties instead)

My best bet is that there is something wrong in your case setup which is trying to access to a transportProperties file.
I would first check the boundary conditions, more specifically the wall functions you use for alphat, which should start with compressible::. (might be another one though).

FYI, region0 is the default name when there is a single region.

Regards,
Yann

[dandanTT]

Thanks a lot, that works. It is the issue of the wall function of alphat. I was using

wall
{
type alphatJayatillekeWallFunction;
Prt 0.85;
value uniform 0;
}

and I replaced that with
wall
{
type compressible::alphatWallFunction; // or compressible::alphatJayatillekeWallFunction;
Prt 0.85;
value uniform 0;
}
which both work.

So the key is the "compressible::" for this error.