src/lagrangian/dieselSpray/spraySubModels/evaporationModel/RutlandFlashBoil/RutlandFlashBoil.H

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   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 Class
  25     Foam::RutlandFlashBoil
  26
  27 Description
  28     Evaporation model with flash boiling.
  29
  30     Evaporation model that takes into account of:
  31       - flash boiling of the liquid core and droplets
  32       - superheated vaporization of a boiling droplet
  33
  34     Accurated description in
  35     \verbatim
  36     B. Zuo, A.M. Gomes, C.J. Rutland
  37     "Modeling Superheated Fuel Spray Vaporization"
  38     Int. Journal of Engine Research, 2000. Vol. 1, pp. 321-326
  39     \endverbatim
  40 \*---------------------------------------------------------------------------*/
  41
  42 #ifndef RutlandFlashBoil_H
  43 #define RutlandFlashBoil_H
  44
  45 #include "evaporationModel.H"
  46
  47 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
  48
  49 namespace Foam
  50 {
  51
  52 /*---------------------------------------------------------------------------*\
  53                       Class RutlandFlashBoil Declaration
  54 \*---------------------------------------------------------------------------*/
  55
  56 class RutlandFlashBoil
  57 :
  58     public evaporationModel
  59 {
  60
  61 private:
  62
  63     // Private data
  64
  65         dictionary evapDict_;
  66         scalar preReScFactor_;
  67         scalar ReExponent_;
  68         scalar ScExponent_;
  69
  70         word evaporationScheme_;
  71         label nEvapIter_;
  72
  73
  74 public:
  75
  76     //- Runtime type information
  77     TypeName("RutlandFlashBoil");
  78
  79
  80     // Constructors
  81
  82         //- Construct from dictionary
  83         RutlandFlashBoil(const dictionary& dict);
  84
  85
  86     //- Destructor
  87     virtual ~RutlandFlashBoil();
  88
  89
  90     // Member Functions
  91
  92         bool evaporation() const;
  93
  94        //- Correlation for the Sherwood Number
  95         scalar Sh
  96         (
  97             const scalar ReynoldsNumber,
  98             const scalar SchmidtNumber
  99         ) const;
 100
 101         //- Return the evaporation relaxation time
 102         scalar relaxationTime
 103         (
 104             const scalar diameter,
 105             const scalar liquidDensity,
 106             const scalar rhoFuelVapor,
 107             const scalar massDiffusionCoefficient,
 108             const scalar ReynoldsNumber,
 109             const scalar SchmidtNumber,
 110             const scalar Xs,
 111             const scalar Xf,
 112             const scalar m0,
 113             const scalar dm,
 114             const scalar dt
 115         ) const;
 116
 117         scalar boilingTime
 118         (
 119             const scalar liquidDensity,
 120             const scalar cpFuel,
 121             const scalar heatOfVapour,
 122             const scalar kappa,
 123             const scalar Nusselt,
 124             const scalar deltaTemp,
 125             const scalar diameter,
 126             const scalar liquidCore,
 127             const scalar time,
 128             const scalar tDrop,
 129             const scalar tBoilingSurface,
 130             const scalar vapourSurfaceEnthalpy,
 131             const scalar vapourFarEnthalpy,
 132             const scalar cpGas,
 133             const scalar temperature,
 134             const scalar kLiquid
 135         ) const;
 136
 137         inline label nEvapIter() const
 138         {
 139             return nEvapIter_;
 140         }
 141
 142 };
 143
 144
 145 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 146
 147 } // End namespace Foam
 148
 149 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 150
 151 #endif
 152
 153 // ************************************************************************* //