src/engine/engineTopoChangerMesh/pistonSliding/moveAllTogetherPistonSliding.H

   1 // use tetrahedral decomposition of the engine mesh
   2
   3 {
   4     tetPointVectorField& motionU = mSolver.motionU();
   5
   6     vector pistonVel =
   7             piston().cs().axis()*engineTime_.pistonSpeed().value();
   8
   9     Info << " Set valve velocity " << endl;
  10
  11     forAll (valves_, valveI)
  12     {
  13         // If valve is present in geometry, set the motion
  14
  15        Info << " Set valve Bottom velocity " << endl;
  16
  17        if (valves_[valveI].bottomPatchID().active())
  18         {
  19             vector valveVel =
  20                 -valves_[valveI].curVelocity()*valves_[valveI].cs().axis();
  21
  22             // Bottom of the valve moves with given velocity
  23             motionU.boundaryField()[valves_[valveI].bottomPatchID().index()] ==
  24                 valveVel;
  25
  26             if (debug)
  27             {
  28                 Info<< "Valve " << valveI << " lift: "
  29                     << valves_[valveI].curLift()
  30                     << " velocity: " << valves_[valveI].curVelocity()
  31                     << endl;
  32             }
  33         }
  34
  35
  36        Info << " Set valve poppet velocity " << endl;
  37
  38         if (valves_[valveI].poppetPatchID().active())
  39         {
  40
  41             // Top of the valve does not move
  42             motionU.boundaryField()[valves_[valveI].poppetPatchID().index()] ==
  43                 valveVel;
  44         }
  45
  46
  47        Info << " Set valve curInCyl velocity " << endl;
  48
  49         if (valves_[valveI].curtainInCylinderPatchID().active())
  50         {
  51
  52             label cicIndex = valves_[valveI].curtainInCylinderPatchID().index();
  53
  54             componentMixedTetPolyPatchVectorField& pp =
  55                 refCast<componentMixedTetPolyPatchVectorField>
  56                 (
  57                     motionU.boundaryField()[cicIndex]
  58                 );
  59
  60             scalarField curtainInCylinderPoints =
  61                             motionU.boundaryField()[cicIndex].patch()
  62                             .localPoints().component(vector::Z);
  63
  64             pp.refValue() = pistonVel;
  65             pp.valueFraction() =
  66             (1.0-pos(curtainInCylinderPoints - pistonPosition()))*vector(0,0,1);
  67
  68
  69
  70         }
  71
  72        Info << " Set valve curInport velocity " << endl;
  73
  74
  75         if (valves_[valveI].curtainInPortPatchID().active())
  76         {
  77             label cipIndex = valves_[valveI].curtainInPortPatchID().index();
  78
  79             componentMixedTetPolyPatchVectorField& pp =
  80                 refCast<componentMixedTetPolyPatchVectorField>
  81                 (
  82                     motionU.boundaryField()[cipIndex]
  83                 );
  84
  85             scalarField curtainInPortPoints =
  86                             motionU.boundaryField()[cipIndex].patch()
  87                             .localPoints().component(vector::Z);
  88
  89             pp.refValue() = pistonVel;
  90             pp.valueFraction() =
  91             (1.0-pos(curtainInPortPoints - pistonPosition()))*vector(0,0,1);;
  92
  93         }
  94
  95
  96        Info << " Set valve stem velocity " << endl;
  97
  98         if (valves_[valveI].stemPatchID().active())
  99         {
 100             label stemIndex = valves_[valveI].stemPatchID().index();
 101
 102             componentMixedTetPolyPatchVectorField& pp =
 103                 refCast<componentMixedTetPolyPatchVectorField>
 104                 (
 105                     motionU.boundaryField()[stemIndex]
 106                 );
 107
 108             pp.refValue() = vector::zero;
 109             pp.valueFraction() = vector(0,0,1);
 110         }
 111     }
 112 /*
 113         {
 114             label linerIndex = boundaryMesh().findPatchID("liner");
 115
 116             componentMixedTetPolyPatchVectorField& pp =
 117                 refCast<componentMixedTetPolyPatchVectorField>
 118                 (
 119                     motionU.boundaryField()[linerIndex]
 120                 );
 121
 122             scalarField linerPoints =
 123                             motionU.boundaryField()[linerIndex].patch()
 124                             .localPoints().component(vector::Z);
 125
 126             pp.refValue() = pistonVel;
 127             pp.valueFraction() =
 128             (1.0-pos(linerPoints - pistonPosition()))*vector(0,0,1);;
 129
 130         }
 131
 132
 133
 134     // Set piston velocity
 135     if (piston().patchID().active())
 136     {
 137
 138         if (debug)
 139         {
 140             Info<< "Piston velocity: " << pistonVel;
 141         }
 142
 143         componentMixedTetPolyPatchVectorField& pp =
 144             refCast<componentMixedTetPolyPatchVectorField>
 145             (
 146                 motionU.boundaryField()[piston().patchID().index()]
 147             );
 148
 149         pp.refValue() = pistonVel;
 150
 151     }
 152 */
 153
 154
 155     mSolver.solve();
 156
 157     Info << "msolved" << endl;
 158
 159 //  Setting the boundary position
 160
 161     {
 162         label cylinderHeadIndex = boundaryMesh().findPatchID("cylinderHead");
 163
 164         // Top of the valve does not move
 165         motionU.boundaryField()[cylinderHeadIndex] ==
 166             vector::zero;
 167     }
 168
 169
 170 }