===========
boundary
===========

.. code-block:: bash 

    /*--------------------------------*- C++ -*----------------------------------*\
    | =========                 |                                                 |
    | \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
    |  \\    /   O peration     | Version:  v1606+                                |
    |   \\  /    A nd           | Web:      www.OpenFOAM.com                      |
    |    \\/     M anipulation  |                                                 |
    \*---------------------------------------------------------------------------*/
    FoamFile
    {
        version     2.0;
        format      ascii;
        class       polyBoundaryMesh;
        location    "constant/polyMesh";
        object      boundary;
    }
    // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

    5
    (
        inlet
        {
            type            patch;
            nFaces          50;
            startFace       118750;
        }
        outlet
        {
            type            patch;
            nFaces          50;
            startFace       118800;
        }
        upperWall
        {
            type            wall;
            inGroups        1(wall);
            nFaces          1200;
            startFace       118850;
        }
        lowerWall
        {
            type            wall;
            inGroups        1(wall);
            nFaces          1200;
            startFace       120050;
        }
        frontAndBack
        {
            type            empty;
            inGroups        1(empty);
            nFaces          120000;
            startFace       121250;
        }
    )

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