src/dynamicFvMesh/dynamicInkJetFvMesh/dynamicInkJetFvMesh.C

   1 /*---------------------------------------------------------------------------*\
   2   =========                 |
   3   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   4    \\    /   O peration     |
   5     \\  /    A nd           | Copyright (C) 1991-2008 OpenCFD Ltd.
   6      \\/     M anipulation  |
   7 -------------------------------------------------------------------------------
   8 License
   9     This file is part of OpenFOAM.
  10
  11     OpenFOAM is free software; you can redistribute it and/or modify it
  12     under the terms of the GNU General Public License as published by the
  13     Free Software Foundation; either version 2 of the License, or (at your
  14     option) any later version.
  15
  16     OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
  17     ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  18     FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  19     for more details.
  20
  21     You should have received a copy of the GNU General Public License
  22     along with OpenFOAM; if not, write to the Free Software Foundation,
  23     Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  24
  25 \*---------------------------------------------------------------------------*/
  26
  27 #include "dynamicInkJetFvMesh.H"
  28 #include "addToRunTimeSelectionTable.H"
  29 #include "volFields.H"
  30 #include "mathematicalConstants.H"
  31
  32 // * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
  33
  34 namespace Foam
  35 {
  36     defineTypeNameAndDebug(dynamicInkJetFvMesh, 0);
  37     addToRunTimeSelectionTable(dynamicFvMesh, dynamicInkJetFvMesh, IOobject);
  38 }
  39
  40
  41 // * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
  42
  43 Foam::dynamicInkJetFvMesh::dynamicInkJetFvMesh(const IOobject& io)
  44 :
  45     dynamicFvMesh(io),
  46     dynamicMeshCoeffs_
  47     (
  48         IOdictionary
  49         (
  50             IOobject
  51             (
  52                 "dynamicMeshDict",
  53                 io.time().constant(),
  54                 *this,
  55                 IOobject::MUST_READ,
  56                 IOobject::NO_WRITE
  57             )
  58         ).subDict(typeName + "Coeffs")
  59     ),
  60     amplitude_(readScalar(dynamicMeshCoeffs_.lookup("amplitude"))),
  61     frequency_(readScalar(dynamicMeshCoeffs_.lookup("frequency"))),
  62     refPlaneX_(readScalar(dynamicMeshCoeffs_.lookup("refPlaneX"))),
  63     stationaryPoints_
  64     (
  65         IOobject
  66         (
  67             "points",
  68             io.time().constant(),
  69             meshSubDir,
  70             *this,
  71             IOobject::MUST_READ,
  72             IOobject::NO_WRITE
  73         )
  74     )
  75 {
  76     Info<< "Performing a dynamic mesh calculation: " << endl
  77         << "amplitude: " << amplitude_
  78         << " frequency: " << frequency_
  79         << " refPlaneX: " << refPlaneX_ << endl;
  80 }
  81
  82 // * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
  83
  84 Foam::dynamicInkJetFvMesh::~dynamicInkJetFvMesh()
  85 {}
  86
  87
  88 // * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
  89
  90 bool Foam::dynamicInkJetFvMesh::update()
  91 {
  92     scalar scalingFunction =
  93         0.5*(::cos(2*mathematicalConstant::pi*frequency_*time().value()) - 1.0);
  94
  95     Info<< "Mesh scaling. Time = " << time().value() << " scaling: "
  96         << scalingFunction << endl;
  97
  98     pointField newPoints = stationaryPoints_;
  99
 100     newPoints.replace
 101     (
 102         vector::X,
 103         stationaryPoints_.component(vector::X)*
 104         (
 105             1.0
 106           + pos
 107             (
 108               - (stationaryPoints_.component(vector::X))
 109               - refPlaneX_
 110             )*amplitude_*scalingFunction
 111         )
 112     );
 113
 114     fvMesh::movePoints(newPoints);
 115
 116     volVectorField& U =
 117         const_cast<volVectorField&>(lookupObject<volVectorField>("U"));
 118     U.correctBoundaryConditions();
 119
 120     return true;
 121 }
 122
 123
 124 // ************************************************************************* //