src/vofDynamicMesh/lnInclude/linearWaveVelocityFvPatchField.C

   1 /*---------------------------------------------------------------------------*\
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   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 "linearWaveVelocityFvPatchField.H"
  28 #include "addToRunTimeSelectionTable.H"
  29 #include "fvPatchFieldMapper.H"
  30 #include "volFields.H"
  31 #include "surfaceFields.H"
  32 #include "mathematicalConstants.H"
  33
  34 using namespace Foam::mathematicalConstant;
  35
  36 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
  37
  38 namespace Foam
  39 {
  40
  41 // * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
  42
  43 linearWaveVelocityFvPatchField::linearWaveVelocityFvPatchField
  44 (
  45     const fvPatch& p,
  46     const DimensionedField<vector, volMesh>& iF
  47 )
  48 :
  49     fixedValueFvPatchVectorField(p, iF),
  50     amplitude_(0),
  51     period_(0),
  52     valueAbove_(vector::zero),
  53     curTimeIndex_(-1)
  54 {}
  55
  56
  57 linearWaveVelocityFvPatchField::linearWaveVelocityFvPatchField
  58 (
  59     const fvPatch& p,
  60     const DimensionedField<vector, volMesh>& iF,
  61     const dictionary& dict
  62 )
  63 :
  64     fixedValueFvPatchVectorField(p, iF),
  65     amplitude_(readScalar(dict.lookup("amplitude"))),
  66     period_(readScalar(dict.lookup("period"))),
  67     valueAbove_(dict.lookup("valueAbove")),
  68     curTimeIndex_(-1)
  69 {
  70     evaluate();
  71 }
  72
  73
  74 linearWaveVelocityFvPatchField::linearWaveVelocityFvPatchField
  75 (
  76     const linearWaveVelocityFvPatchField& ptf,
  77     const fvPatch& p,
  78     const DimensionedField<vector, volMesh>& iF,
  79     const fvPatchFieldMapper& mapper
  80 )
  81 :
  82     fixedValueFvPatchVectorField(ptf, p, iF, mapper),
  83     amplitude_(ptf.amplitude_),
  84     period_(ptf.period_),
  85     valueAbove_(ptf.valueAbove_),
  86     curTimeIndex_(-1)
  87 {}
  88
  89
  90 linearWaveVelocityFvPatchField::linearWaveVelocityFvPatchField
  91 (
  92     const linearWaveVelocityFvPatchField& ptf,
  93     const DimensionedField<vector, volMesh>& iF
  94 )
  95 :
  96     fixedValueFvPatchVectorField(ptf, iF),
  97     amplitude_(ptf.amplitude_),
  98     period_(ptf.period_),
  99     valueAbove_(ptf.valueAbove_),
 100     curTimeIndex_(-1)
 101 {}
 102
 103
 104 // * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 105
 106 void linearWaveVelocityFvPatchField::updateCoeffs()
 107 {
 108     if (this->updated())
 109     {
 110         return;
 111     }
 112
 113     if (curTimeIndex_ != this->db().time().timeIndex())
 114     {
 115         scalarField coord = this->patch().Cf().component(vector::Y);
 116
 117         scalar omega = twoPi/period_;
 118         scalar lambda = 9.81*period_*period_/twoPi;
 119         scalar k = twoPi/lambda;
 120
 121         scalar time = this->db().time().value();
 122
 123         scalar h = amplitude_*sin(twoPi*time/period_);
 124
 125         Info << "t = " << this->db().time().value()
 126             << " h = " << h
 127             << " U(0) = " <<  omega*cos(omega*time) << endl;
 128
 129         forAll (coord, faceI)
 130         {
 131             vector newU = valueAbove_;
 132
 133             scalar eky = exp(k*coord[faceI]);
 134
 135             if(coord[faceI] > h)
 136             {
 137                 eky = exp((h - coord[faceI])*3.0*k);
 138                 newU.y() = 0.0;
 139             }
 140             else
 141             {
 142                 newU.y() = omega*amplitude_*eky*cos(omega*time);
 143             }
 144
 145             newU.x() = omega*amplitude_*eky*sin(omega*time);
 146             newU.z() = 0.0;
 147
 148             this->operator[](faceI) = newU;
 149         };
 150
 151         curTimeIndex_ = this->db().time().timeIndex();
 152     }
 153
 154     fixedValueFvPatchVectorField::updateCoeffs();
 155 }
 156
 157
 158 // Write
 159 void linearWaveVelocityFvPatchField::write(Ostream& os) const
 160 {
 161     fvPatchVectorField::write(os);
 162     os.writeKeyword("amplitude")
 163         << amplitude_ << token::END_STATEMENT << nl;
 164     os.writeKeyword("period")
 165         << period_ << token::END_STATEMENT << nl;
 166     os.writeKeyword("valueAbove")
 167         << valueAbove_ << token::END_STATEMENT << nl;
 168     writeEntry("value", os);
 169 }
 170
 171
 172 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 173
 174 makePatchTypeField(fvPatchVectorField, linearWaveVelocityFvPatchField);
 175
 176 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 177
 178 } // End namespace Foam
 179
 180 // ************************************************************************* //