[arezayan87]

I need to add as pollution source in my domain. I want to to do it by using a passiveScalar. then I used a scalerTransport class in controlDict:

functions
{
pollution
{
    type            scalarTransport;
    libs            ("libsolverFunctionObjects.so");


    // Optional entries

    // Name of scalar field to transport, default = 's'
    field           s;

    // Name of flux field, default = 'phi'
    phi             phi;

    // Name of density field for compressible cases, default = 'rho'
    rho             rho;

    // Name of phase field to constrain scalar to, default = 'none'
    phase           none;

    // Set the scalar to zero on start/re-start
    resetOnStartUp  no;

    // Name of field to use when looking up schemes from fvSchemes
    // default = <field>
    schemesField    s;


    // Diffusivity

    // Fixed value diffusivity
    D  0.0000176;

    // Name of field to use as diffusivity, default = 'none'
    nut             nut;

    // Run-time selectable sources
    
}

};

the problem is OpenFoam shows a fatal error:

[I]keyword diffusion is undefined in dictionary [/I].

my solver is simpleFoam

[Krapf]

My guess is that you are using OpenFOAM from openfoam.org but the definitionen of the function object is for OpenFOAM from openfoam.com. Here you can see the explanation for the missing diffusion keyword: https://cpp.openfoam.org/v10/classFo...t.html#details (There it is written "diffusivity entry", but it should be "diffusion entry".)

[arezayan87]

Originally Posted by Krapf

My guess is that you are using OpenFOAM from openfoam.org but the definitionen of the function object is for OpenFOAM from openfoam.com. Here you can see the explanation for the missing diffusion keyword: https://cpp.openfoam.org/v10/classFo...t.html#details (There it is written "diffusivity entry", but it should be "diffusion entry".)

---------------------------------------------------------
Thanks a million,
your guess was right I corrected my code and it's done.