src/engine/ignition/ignitionSite.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 "ignitionSite.H"
  27 #include "Time.H"
  28 #include "volFields.H"
  29
  30 // * * * * * * * * * * * * * Private Member Functions  * * * * * * * * * * * //
  31
  32 void Foam::ignitionSite::findIgnitionCells(const fvMesh& mesh)
  33 {
  34     // Bit tricky: generate C and V before shortcutting if cannot find
  35     // cell locally. mesh.C generation uses parallel communication.
  36     const volVectorField& centres = mesh.C();
  37     const scalarField& vols = mesh.V();
  38
  39     label ignCell = mesh.findNearestCell(location_);
  40     if (ignCell == -1)
  41     {
  42         Info << "NOT FOUND" << endl;
  43         return;
  44     }
  45
  46     scalar radius = diameter_/2.0;
  47
  48     cells_.setSize(1);
  49     cellVolumes_.setSize(1);
  50
  51     cells_[0] = ignCell;
  52     cellVolumes_[0] = vols[ignCell];
  53
  54     scalar minDist = GREAT;
  55     label nIgnCells = 1;
  56
  57     forAll(centres, celli)
  58     {
  59         scalar dist = mag(centres[celli] - location_);
  60
  61         if (dist < minDist)
  62         {
  63             minDist = dist;
  64         }
  65
  66         if (dist < radius && celli != ignCell)
  67         {
  68             cells_.setSize(nIgnCells+1);
  69             cellVolumes_.setSize(nIgnCells+1);
  70
  71             cells_[nIgnCells] = celli;
  72             cellVolumes_[nIgnCells] = vols[celli];
  73
  74             nIgnCells++;
  75         }
  76     }
  77
  78     if (cells_.size())
  79     {
  80         Pout<< "Found ignition cells:" << endl << cells_ << endl;
  81     }
  82 }
  83
  84
  85 // * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
  86
  87 const Foam::labelList& Foam::ignitionSite::cells() const
  88 {
  89     if (mesh_.changing() && timeIndex_ != db_.timeIndex())
  90     {
  91         const_cast<ignitionSite&>(*this).findIgnitionCells(mesh_);
  92     }
  93     timeIndex_ = db_.timeIndex();
  94
  95     return cells_;
  96 }
  97
  98
  99 bool Foam::ignitionSite::igniting() const
 100 {
 101     scalar curTime = db_.value();
 102     scalar deltaT = db_.deltaTValue();
 103
 104     return
 105     (
 106         (curTime - deltaT >= time_)
 107         &&
 108         (curTime - deltaT < time_ + max(duration_, deltaT) + SMALL)
 109     );
 110 }
 111
 112
 113 bool Foam::ignitionSite::ignited() const
 114 {
 115     scalar curTime = db_.value();
 116     scalar deltaT = db_.deltaTValue();
 117
 118     return(curTime - deltaT >= time_);
 119 }
 120
 121
 122 // * * * * * * * * * * * * * * * Member Operators  * * * * * * * * * * * * * //
 123
 124 void Foam::ignitionSite::operator=(const ignitionSite& is)
 125 {
 126     location_ = is.location_;
 127     diameter_ = is.diameter_;
 128     time_ = is.time_;
 129     duration_ = is.duration_;
 130     strength_ = is.strength_;
 131     cells_ = is.cells_;
 132     cellVolumes_ = is.cellVolumes_;
 133 }
 134
 135
 136 // ************************************************************************* //