src/engine/engineTopoChangerMesh/pistonSliding/poppetDeformationPistonSliding.H

   1 //if(poppetDeformation)
   2 //{
   3
   4     Info << "Poppet valve deformation" << endl;
   5
   6     tetPointVectorField& motionU = mSolver.motionU();
   7     // Blocking vertical motion
   8
   9     motionU.internalField().replace
  10     (
  11         vector::Z,
  12         scalarField(mSolver.motionU().internalField().size(), 0)
  13     );
  14
  15     Info << "motionU.replace" << endl;
  16
  17
  18     // Set valve velocity
  19     forAll (valves_, valveI)
  20     {
  21
  22         vector valveVel =
  23             valves_[valveI].curVelocity()*valves_[valveI].cs().axis();
  24
  25         scalar zPoppetMin = -GREAT;
  26         scalar zPoppetMax = GREAT;
  27         scalar zCurtainMax = GREAT;
  28
  29         // If valve is present in geometry, set the motion
  30         if (valves_[valveI].bottomPatchID().active())
  31         {
  32             // Bottom of the valve moves with given velocity
  33
  34             motionU.boundaryField()[valves_[valveI].bottomPatchID().index()] == vector::zero;
  35 //            motionU.boundaryField()[valves_[valveI].bottomPatchID().index()] == valveVel;
  36         }
  37
  38         if (valves_[valveI].poppetPatchID().active())
  39         {
  40
  41             zPoppetMin = min
  42             (
  43                 motionU.boundaryField()[valves_[valveI].poppetPatchID().index()].patch()
  44                 .localPoints().component(vector::Z)
  45             );
  46             zPoppetMax = max
  47             (
  48                 motionU.boundaryField()[valves_[valveI].poppetPatchID().index()].patch()
  49                 .localPoints().component(vector::Z)
  50             );
  51
  52 //            Info << "zpoppet min and max" << endl;
  53 /*
  54             if (valves_[valveI].curLift() > valves_[valveI].deformationLift())
  55 //            if (valves_[valveI].curLift() > valves_[valveI].minLift())
  56             {
  57                 // Top of the valve does not move
  58                 motionU.boundaryField()[valves_[valveI].poppetPatchID().index()] ==
  59                     vector::zero;
  60             }
  61             else
  62             {
  63 */
  64
  65                 motionU.boundaryField()[valves_[valveI].poppetPatchID().index()] ==
  66                     valveVel;
  67 //            }
  68
  69         }
  70
  71         if (valves_[valveI].curtainInCylinderPatchID().active())
  72         {
  73
  74             label cicIndex = valves_[valveI].curtainInCylinderPatchID().index();
  75
  76             componentMixedTetPolyPatchVectorField& pp =
  77                 refCast<componentMixedTetPolyPatchVectorField>
  78                 (
  79                     motionU.boundaryField()[cicIndex]
  80                 );
  81
  82             pp.refValue() = vector::zero;
  83             pp.valueFraction() = vector::zero;
  84
  85         }
  86
  87         scalar zDetMin = -GREAT;
  88         scalar zDetMax = GREAT;
  89
  90
  91         if (valves_[valveI].curtainInPortPatchID().active())
  92         {
  93             label cipIndex = valves_[valveI].curtainInPortPatchID().index();
  94
  95             zCurtainMax = max
  96             (
  97                 motionU.boundaryField()[cipIndex].patch()
  98                 .localPoints().component(vector::Z)
  99             );
 100
 101
 102 //            if (valves_[valveI].curLift() > valves_[valveI].minLift())
 103 //            if (valves_[valveI].curLift() > valves_[valveI].deformationLift())
 104 //            {
 105                 componentMixedTetPolyPatchVectorField& pp =
 106                     refCast<componentMixedTetPolyPatchVectorField>
 107                     (
 108                         motionU.boundaryField()[cipIndex]
 109                     );
 110
 111                 pp.refValue() = vector::zero;
 112                 pp.valueFraction() = vector::zero;
 113 //            }
 114 /*            else
 115             {
 116
 117 //              poppet deformation
 118
 119                 componentMixedTetPolyPatchVectorField& pp =
 120                     refCast<componentMixedTetPolyPatchVectorField>
 121                     (
 122                         motionU.boundaryField()[cipIndex]
 123                     );
 124
 125                 scalarField cicPoints =
 126                 motionU.boundaryField()[cipIndex].patch()
 127                 .localPoints().component(vector::Z);
 128
 129                 pp.valueFraction() = pos(cicPoints - zPoppetMin)*vector(0,0,1);
 130
 131                 pp.refValue() = (cicPoints - zCurtainMax)/(zPoppetMin - zCurtainMax)*valveVel;
 132
 133             }
 134 */
 135         }
 136
 137         if (valves_[valveI].stemPatchID().active())
 138         {
 139             label stemIndex = valves_[valveI].stemPatchID().index();
 140
 141 //            if (valves_[valveI].curLift() > valves_[valveI].minLift())
 142 //            if (valves_[valveI].curLift() > valves_[valveI].deformationLift())
 143 //            {
 144                 componentMixedTetPolyPatchVectorField& pp =
 145                     refCast<componentMixedTetPolyPatchVectorField>
 146                     (
 147                         motionU.boundaryField()[stemIndex]
 148                     );
 149
 150                 pp.refValue() = vector::zero;
 151                 pp.valueFraction() = vector::zero;
 152 //            }
 153 /*            else
 154             {
 155
 156 //              poppet deformation
 157
 158                 componentMixedTetPolyPatchVectorField& pp =
 159                     refCast<componentMixedTetPolyPatchVectorField>
 160                     (
 161                         motionU.boundaryField()[stemIndex]
 162                     );
 163
 164                 scalarField stemPoints =
 165                 motionU.boundaryField()[stemIndex].patch()
 166                 .localPoints().component(vector::Z);
 167
 168                 Info << "zPoppetMax = " << zPoppetMax << endl;
 169                 Info << "zDetMax = " << zDetMax << endl;
 170
 171                 pp.valueFraction() = (1.0 - pos(stemPoints - zPoppetMax))*vector(0,0,1);
 172
 173                 pp.refValue() = (stemPoints - zDetMax)/(zPoppetMax - zDetMax)*valveVel;
 174
 175             }
 176 */
 177         }
 178
 179
 180
 181        {
 182             label linerIndex = boundaryMesh().findPatchID("liner");
 183
 184             componentMixedTetPolyPatchVectorField& pp =
 185                 refCast<componentMixedTetPolyPatchVectorField>
 186                 (
 187                     motionU.boundaryField()[linerIndex]
 188                 );
 189
 190             scalarField linerPoints =
 191                             motionU.boundaryField()[linerIndex].patch()
 192                             .localPoints().component(vector::Z);
 193
 194             pp.refValue() = vector::zero;
 195             pp.valueFraction() = vector::zero;
 196
 197         }
 198
 199     }
 200
 201     // Set piston velocity
 202     if (piston().patchID().active())
 203     {
 204
 205         componentMixedTetPolyPatchVectorField& pp =
 206             refCast<componentMixedTetPolyPatchVectorField>
 207             (
 208                 motionU.boundaryField()[piston().patchID().index()]
 209             );
 210
 211         pp.refValue() = vector::zero;
 212
 213     }
 214
 215     {
 216         label cylinderHeadIndex = boundaryMesh().findPatchID("cylinderHead");
 217
 218         // Top of the valve does not move
 219         motionU.boundaryField()[cylinderHeadIndex] ==
 220             vector::zero;
 221     }
 222
 223     mSolver.solve();
 224
 225 //  Setting the boundary position
 226
 227     movePoints(mSolver.curPoints());
 228
 229     // Blocking vertical motion
 230     motionU.internalField().replace
 231     (
 232         vector::Z,
 233         scalarField(mSolver.motionU().internalField().size(), 0)
 234     );
 235
 236 //}