CFD Online Discussion Forums - How to create a multi-region mesh?

Dear All,

I am trying to run a case, from the mesh to the post-processing phase, using OpenFOAM. What I wanna do, now, is very simple:

1. I create a bigCube using blockMesh.
2. Inside this bigCube I am trying to insert a smallCube. Thanks to topoSet I can "select" the cells I am interested in. The point is that I would like to create a double-region domain. I mean: I wanna call "solid" the smallCube set and "fluid" the bigCube.

I have thought something about:

Code:

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

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

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

|  \\    /   O peration     | Version:  2.2.2                                 |

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

|    \\/     M anipulation  |                                                 |

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

FoamFile

{

    version     2.0;

    format      ascii;

    class       dictionary;

    object      topoSetDict;

}

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



actions

(

    {

        name    smallCube;

        type    cellZoneSet;

        action  new;

        source        boxToCell;

        sourceInfo

        {

            box (0.8 0 0.1)(1.3 0.25 0.6);

        }

    }



);



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

But once I have the set, how can I make it be a region?

Thanks a lot,
Samuele