CFD Online Discussion Forums - How to cell field values to cells in setFields

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How to cell field values to cells in setFields

Dear members

I want to know how to set the field values to cells using setFields. I used cellToCell in setFields. but it gives me errors.

Thanking You

rgds

Upuli

I do not understand what you want to achieve / you specify to little information. It always helps to post what exactly you tried to clarify your problem.

This is an example of a setFieldDict that I am using to initiate a spherical bubble in interFoam:

Code:

/*--------------------------------*- C++ -*----------------------------------*\

| =========                 |                                                 |

| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |

|  \\    /   O peration     | Version:  4.0                                   |

|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |

|    \\/     M anipulation  |                                                 |

\*---------------------------------------------------------------------------*/

FoamFile

{

    version     2.0;

    format      ascii;

    class       dictionary;

    location    "system";

    object      setFieldsDict;

}

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



defaultFieldValues

(

    volScalarFieldValue alpha.water 1

);



regions

(

    sphereToCell

    {

        centre (0.0025 0.0025 0.001);

        radius 0.0005;

        fieldValues

        (

            volScalarFieldValue alpha.water 0

        );

    }

 );





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

Thank you very much for your prompt reply. I want to define some field values for one cell in my geometry(box). I think cellToCell in setFields will do that. But I do not how to use it(which parameters are required in defining the cell)

Thanks

And how do you wish to select that one cell? The answer will depend on that.

Some other ideas:
1) Use boxToCell with a tiny box around the cell you wish to select.
2) Create a set based on the cell indices and then use cellToCell***
3) funkySetFields can use an arbitrary expression to select cells.

***cellToCell says (${FOAM_SRC}/meshTools/sets/cellSources/cellToCell):

Code:

 27 Description

 28     A topoSetSource to select the cells from another cellSet.

And needs the dictionary entry "set":

Code:

76 setName_(dict.lookup("set"))