src/dynamicFvMesh/dynamicInkJetFvMesh/dynamicInkJetFvMesh.C

   1 /*---------------------------------------------------------------------------*\
   2   =========                 |
   3   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   4    \\    /   O peration     |
   5     \\  /    A nd           | Copyright (C) 2011 OpenFOAM Foundation
   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_IF_MODIFIED,
  55                 IOobject::NO_WRITE,
  56                 false
  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*
  94         (
  95             ::cos(constant::mathematical::twoPi*frequency_*time().value())
  96           - 1.0
  97         );
  98
  99     Info<< "Mesh scaling. Time = " << time().value() << " scaling: "
 100         << scalingFunction << endl;
 101
 102     pointField newPoints = stationaryPoints_;
 103
 104     newPoints.replace
 105     (
 106         vector::X,
 107         stationaryPoints_.component(vector::X)*
 108         (
 109             1.0
 110           + pos
 111             (
 112               - (stationaryPoints_.component(vector::X))
 113               - refPlaneX_
 114             )*amplitude_*scalingFunction
 115         )
 116     );
 117
 118     fvMesh::movePoints(newPoints);
 119
 120     volVectorField& U =
 121         const_cast<volVectorField&>(lookupObject<volVectorField>("U"));
 122     U.correctBoundaryConditions();
 123
 124     return true;
 125 }
 126
 127
 128 // ************************************************************************* //