src/dynamicFvMesh/dynamicInkJetFvMesh/dynamicInkJetFvMesh.C

   1 /*---------------------------------------------------------------------------*\
   2   =========                 |
   3   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   4    \\    /   O peration     |
   5     \\  /    A nd           | Copyright (C) 1991-2010 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
  13     the Free Software Foundation, either version 3 of the License, or
  14     (at your 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, see <http://www.gnu.org/licenses/>.
  23
  24 \*---------------------------------------------------------------------------*/
  25
  26 #include "dynamicInkJetFvMesh.H"
  27 #include "addToRunTimeSelectionTable.H"
  28 #include "volFields.H"
  29 #include "mathematicalConstants.H"
  30
  31 // * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
  32
  33 namespace Foam
  34 {
  35     defineTypeNameAndDebug(dynamicInkJetFvMesh, 0);
  36     addToRunTimeSelectionTable(dynamicFvMesh, dynamicInkJetFvMesh, IOobject);
  37 }
  38
  39
  40 // * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
  41
  42 Foam::dynamicInkJetFvMesh::dynamicInkJetFvMesh(const IOobject& io)
  43 :
  44     dynamicFvMesh(io),
  45     dynamicMeshCoeffs_
  46     (
  47         IOdictionary
  48         (
  49             IOobject
  50             (
  51                 "dynamicMeshDict",
  52                 io.time().constant(),
  53                 *this,
  54                 IOobject::MUST_READ,
  55                 IOobject::NO_WRITE
  56             )
  57         ).subDict(typeName + "Coeffs")
  58     ),
  59     amplitude_(readScalar(dynamicMeshCoeffs_.lookup("amplitude"))),
  60     frequency_(readScalar(dynamicMeshCoeffs_.lookup("frequency"))),
  61     refPlaneX_(readScalar(dynamicMeshCoeffs_.lookup("refPlaneX"))),
  62     stationaryPoints_
  63     (
  64         IOobject
  65         (
  66             "points",
  67             io.time().constant(),
  68             meshSubDir,
  69             *this,
  70             IOobject::MUST_READ,
  71             IOobject::NO_WRITE
  72         )
  73     )
  74 {
  75     Info<< "Performing a dynamic mesh calculation: " << endl
  76         << "amplitude: " << amplitude_
  77         << " frequency: " << frequency_
  78         << " refPlaneX: " << refPlaneX_ << endl;
  79 }
  80
  81 // * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
  82
  83 Foam::dynamicInkJetFvMesh::~dynamicInkJetFvMesh()
  84 {}
  85
  86
  87 // * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
  88
  89 bool Foam::dynamicInkJetFvMesh::update()
  90 {
  91     scalar scalingFunction =
  92         0.5*(::cos(2*mathematicalConstant::pi*frequency_*time().value()) - 1.0);
  93
  94     Info<< "Mesh scaling. Time = " << time().value() << " scaling: "
  95         << scalingFunction << endl;
  96
  97     pointField newPoints = stationaryPoints_;
  98
  99     newPoints.replace
 100     (
 101         vector::X,
 102         stationaryPoints_.component(vector::X)*
 103         (
 104             1.0
 105           + pos
 106             (
 107               - (stationaryPoints_.component(vector::X))
 108               - refPlaneX_
 109             )*amplitude_*scalingFunction
 110         )
 111     );
 112
 113     fvMesh::movePoints(newPoints);
 114
 115     volVectorField& U =
 116         const_cast<volVectorField&>(lookupObject<volVectorField>("U"));
 117     U.correctBoundaryConditions();
 118
 119     return true;
 120 }
 121
 122
 123 // ************************************************************************* //