openfoam/tutorials/incompressible/simpleFoam/windAroundBuildings/system/vtkWrite

// -*- C++ -*-
// Minimal example of using the vtkWrite function object.
vtkWrite
{
    type    vtkWrite;
    libs    (utilityFunctionObjects);
    log     true;

    //- Write more frequent than fields
    writeControl    timeStep;
    writeInterval   25;

    // Fields to output (words or regex)
    fields  (U p "(k|epsilon|omega)");

    //- Output format (ascii | binary) - Default=binary
    // format  binary;

    //- Use legacy output format - Default=false
    // legacy  false;

    //- Output directory name - Default="postProcessing/<name>"
    // directory       "VTK";

    //- Write cell ids as field - Default=true
    writeIds    false;

    //- These patches are uninteresting
    excludePatches ( inlet outlet frontAndBack );
}

subset
{
    type    vtkWrite;
    libs    (utilityFunctionObjects);
    log     true;

    //- Write more frequent than fields
    writeControl    timeStep;
    writeInterval   25;

    // boundary    false;

    interpolate true;

    // Fields to output (words or regex)
    fields      (U p);

    //- Write cell ids as field - Default=true
    writeIds    false;

    //- These patches are uninteresting
    excludePatches ( inlet outlet frontAndBack );

    // Region of interest
    selection
    {
        dome
        {
            action  use;
            source  sphere;
            origin  (125 100 0);
            radius  100;
        }
        cylinder
        {
            action  subtract;
            source  cylinder;
            point1  (125 100 0);
            point2  (125 100 100);
            radius  20;
        }
        outlet
        {
            action  add;
            source  box;
            box     (300 -100 -100) (330 250 100);
        }
        clipping
        {
            action  subset;
            source  box;
            box     (-1000 -1000 -1000) (1000 1000 50);
        }
    }
}


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