src/engine/engineTopoChangerMesh/twoStrokeEngine/twoStrokeEngine.C

   1 /*---------------------------------------------------------------------------*\
   2   =========                 |
   3   \\      /  F ield         | foam-extend: Open Source CFD
   4    \\    /   O peration     |
   5     \\  /    A nd           | For copyright notice see file Copyright
   6      \\/     M anipulation  |
   7 -------------------------------------------------------------------------------
   8 License
   9     This file is part of foam-extend.
  10
  11     foam-extend 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 3 of the License, or (at your
  14     option) any later version.
  15
  16     foam-extend is distributed in the hope that it will be useful, but
  17     WITHOUT ANY WARRANTY; without even the implied warranty of
  18     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  19     General Public License for more details.
  20
  21     You should have received a copy of the GNU General Public License
  22     along with foam-extend.  If not, see <http://www.gnu.org/licenses/>.
  23
  24 \*---------------------------------------------------------------------------*/
  25
  26 #include "twoStrokeEngine.H"
  27 #include "layerAdditionRemoval.H"
  28 #include "componentMixedTetPolyPatchVectorField.H"
  29 #include "mapPolyMesh.H"
  30 #include "polyTopoChange.H"
  31 #include "addToRunTimeSelectionTable.H"
  32 #include "GeometricField.H"
  33 #include "volMesh.H"
  34 #include "engineTime.H"
  35 #include "pointField.H"
  36 #include "fvPatchField.H"
  37
  38 // * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
  39
  40 namespace Foam
  41 {
  42     defineTypeNameAndDebug(twoStrokeEngine, 0);
  43     addToRunTimeSelectionTable
  44     (
  45         engineTopoChangerMesh,
  46         twoStrokeEngine,
  47         IOobject
  48     );
  49 }
  50
  51
  52 // * * * * * * * * * * * * * Private Member Functions  * * * * * * * * * * * //
  53
  54 bool Foam::twoStrokeEngine::realDeformation() const
  55 {
  56     if
  57     (
  58         virtualPistonPosition() + engTime().pistonDisplacement().value()
  59       > deckHeight() - engTime().clearance().value() - SMALL
  60     )
  61     {
  62         return true;
  63     }
  64     else
  65     {
  66         return deformation();
  67     }
  68 }
  69
  70
  71 // * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
  72
  73 // Construct from components
  74 Foam::twoStrokeEngine::twoStrokeEngine
  75 (
  76     const IOobject& io
  77 )
  78 :
  79     engineTopoChangerMesh(io),
  80     piston_(*this, engTime().engineDict().subDict("piston")),
  81     scavInPortPatches_(engTime().engineDict().lookup("scavInPortPatches")),
  82     scavInCylPatches_(engTime().engineDict().lookup("scavInCylPatches")),
  83     headPointsSetName_(engTime().engineDict().lookup("headPointsSetName")),
  84     headCellsSetName_(engTime().engineDict().lookup("headCellsSetName")),
  85     movingCellSetName_(engTime().engineDict().lookup("movingCellSetName")),
  86     movingPointsMaskPtr_(NULL),
  87     deformSwitch_(readScalar(engTime().engineDict().lookup("deformAngle"))),
  88     pistonPosition_(-GREAT),
  89     virtualPistonPosition_(-GREAT),
  90     deckHeight_(GREAT),
  91     csPtr_
  92     (
  93         coordinateSystem::New
  94         (
  95             "coordinateSystem",
  96             engTime().engineDict().subDict("coordinateSystem")
  97         )
  98     )
  99
 100 {
 101     if(scavInPortPatches_.size() != scavInCylPatches_.size())
 102     {
 103             FatalErrorIn
 104             (
 105                 "Foam::twoStrokeEngine::twoStrokeEngine(const IOobject& io)"
 106             )   << "The size of the scavenging-cylinder patches is not"
 107                 << "the same of the scavenging-port patches"
 108                 << abort(FatalError);
 109     }
 110
 111     forAll (scavInPortPatches_, patchi)
 112     {
 113         if(boundaryMesh().findPatchID(scavInPortPatches_[patchi]) == -1)
 114         {
 115             FatalErrorIn
 116             (
 117                 "Foam::twoStrokeEngine::twoStrokeEngine(const IOobject& io)"
 118             )   << "patch called" << scavInPortPatches_[patchi]
 119                 << "does not exist"
 120                 << abort(FatalError);
 121         }
 122     }
 123
 124     forAll (scavInCylPatches_, patchi)
 125     {
 126         if(boundaryMesh().findPatchID(scavInCylPatches_[patchi]) == -1)
 127         {
 128             FatalErrorIn
 129             (
 130                 "Foam::twoStrokeEngine::twoStrokeEngine(const IOobject& io)"
 131             )   << "patch called" << scavInCylPatches_[patchi]
 132                 << "does not exist"
 133                 << abort(FatalError);
 134         }
 135     }
 136
 137     // Add zones and modifiers if not already there.
 138     addZonesAndModifiers();
 139 }
 140
 141
 142 // * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 143
 144 void Foam::twoStrokeEngine::setBoundaryVelocity(volVectorField& U)
 145 {
 146     vector pistonVel = piston().cs().axis()*engTime().pistonSpeed().value();
 147
 148     //  On the piston movingWallVelocity is used.
 149     // There is no need to update the piston velocity
 150
 151     forAll (scavInPortPatches_, patchi)
 152     {
 153         const label curPatchID =
 154             boundaryMesh().findPatchID(scavInPortPatches_[patchi]);
 155
 156         U.boundaryField()[curPatchID] == pistonVel;
 157     }
 158 }
 159
 160
 161 // ************************************************************************* //