applications/solvers/incompressible/boundaryFoam/boundaryFoam.C

   1 /*---------------------------------------------------------------------------*\
   2   =========                 |
   3   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   4    \\    /   O peration     |
   5     \\  /    A nd           | Copyright (C) 1991-2009 OpenCFD Ltd.
   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 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 Application
  26     boundaryFoam
  27
  28 Description
  29     Steady-state solver for 1D turbulent flow, typically to generate boundary
  30     layer conditions at an inlet, for use in a simulation.
  31
  32     Boundary layer code to calculate the U, k and epsilon distributions.
  33     Used to create inlet boundary conditions for experimental comparisons
  34     for which U and k have not been measured.
  35     Turbulence model is runtime selectable.
  36
  37 \*---------------------------------------------------------------------------*/
  38
  39 #include "fvCFD.H"
  40 #include "singlePhaseTransportModel.H"
  41 #include "RASModel.H"
  42 #include "wallFvPatch.H"
  43 #include "makeGraph.H"
  44
  45
  46 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
  47
  48 int main(int argc, char *argv[])
  49 {
  50     #include "setRootCase.H"
  51
  52     #include "createTime.H"
  53     #include "createMesh.H"
  54     #include "createFields.H"
  55
  56     // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
  57
  58     Info<< "\nStarting time loop\n" << endl;
  59
  60     while (runTime.loop())
  61     {
  62         Info<< "Time = " << runTime.timeName() << nl << endl;
  63
  64         fvVectorMatrix divR = turbulence->divDevReff(U);
  65         divR.source() = flowMask & divR.source();
  66
  67         fvVectorMatrix UEqn
  68         (
  69             divR == gradP
  70         );
  71
  72         UEqn.relax();
  73
  74         UEqn.solve();
  75
  76
  77         // Correct driving force for a constant mass flow rate
  78
  79         dimensionedVector UbarStar = flowMask & U.weightedAverage(mesh.V());
  80
  81         U += (Ubar - UbarStar);
  82         gradP += (Ubar - UbarStar)/(1.0/UEqn.A())().weightedAverage(mesh.V());
  83
  84         label id = y.size() - 1;
  85
  86         scalar wallShearStress =
  87             flowDirection & turbulence->R()()[id] & wallNormal;
  88
  89         scalar yplusWall
  90 //            = ::sqrt(mag(wallShearStress))*y[id]/laminarTransport.nu()()[id];
  91             = ::sqrt(mag(wallShearStress))*y[id]/turbulence->nuEff()()[id];
  92
  93         Info<< "Uncorrected Ubar = " << (flowDirection & UbarStar.value())<< tab
  94             << "pressure gradient = " << (flowDirection & gradP.value()) << tab
  95             << "min y+ = " << yplusWall << endl;
  96
  97
  98         turbulence->correct();
  99
 100
 101         if (runTime.outputTime())
 102         {
 103             volSymmTensorField R
 104             (
 105                 IOobject
 106                 (
 107                     "R",
 108                     runTime.timeName(),
 109                     mesh,
 110                     IOobject::NO_READ,
 111                     IOobject::AUTO_WRITE
 112                 ),
 113                 turbulence->R()
 114             );
 115
 116             runTime.write();
 117
 118             const word& gFormat = runTime.graphFormat();
 119
 120             makeGraph(y, flowDirection & U, "Uf", gFormat);
 121
 122             makeGraph(y, laminarTransport.nu(), gFormat);
 123
 124             makeGraph(y, turbulence->k(), gFormat);
 125             makeGraph(y, turbulence->epsilon(), gFormat);
 126
 127             //makeGraph(y, flowDirection & R & flowDirection, "Rff", gFormat);
 128             //makeGraph(y, wallNormal & R & wallNormal, "Rww", gFormat);
 129             //makeGraph(y, flowDirection & R & wallNormal, "Rfw", gFormat);
 130
 131             //makeGraph(y, sqrt(R.component(tensor::XX)), "u", gFormat);
 132             //makeGraph(y, sqrt(R.component(tensor::YY)), "v", gFormat);
 133             //makeGraph(y, sqrt(R.component(tensor::ZZ)), "w", gFormat);
 134             makeGraph(y, R.component(tensor::XY), "uv", gFormat);
 135
 136             makeGraph(y, mag(fvc::grad(U)), "gammaDot", gFormat);
 137         }
 138
 139         Info<< "ExecutionTime = " << runTime.elapsedCpuTime() << " s"
 140             << "  ClockTime = " << runTime.elapsedClockTime() << " s"
 141             << nl << endl;
 142     }
 143
 144     Info<< "End\n" << endl;
 145
 146     return 0;
 147 }
 148
 149
 150 // ************************************************************************* //