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

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   8 License
   9     This file is part of OpenFOAM.
  10
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  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
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  19     for more details.
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  23     Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  24
  25 Class
  26     Foam::RutlandFlashBoil
  27
  28 Description
  29     Evaporation model with flash boiling.
  30
  31     Evaporation model that takes into account of:
  32       - flash boiling of the liquid core and droplets
  33       - superheated vaporization of a boiling droplet
  34
  35     Accurated description in
  36     @verbatim
  37     B. Zuo, A.M. Gomes, C.J. Rutland
  38     "Modeling Superheated Fuel Spray Vaporization"
  39     Int. Journal of Engine Research, 2000. Vol. 1, pp. 321-326
  40     @endverbatim
  41 \*---------------------------------------------------------------------------*/
  42
  43 #ifndef RutlandFlashBoil_H
  44 #define RutlandFlashBoil_H
  45
  46 #include "evaporationModel.H"
  47
  48 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
  49
  50 namespace Foam
  51 {
  52
  53 /*---------------------------------------------------------------------------*\
  54                            Class RutlandFlashBoil Declaration
  55 \*---------------------------------------------------------------------------*/
  56
  57 class RutlandFlashBoil
  58 :
  59     public evaporationModel
  60 {
  61
  62 private:
  63
  64     // Private data
  65
  66         dictionary evapDict_;
  67         scalar preReScFactor_;
  68         scalar ReExponent_;
  69         scalar ScExponent_;
  70
  71         word evaporationScheme_;
  72         label nEvapIter_;
  73
  74
  75 public:
  76
  77     //- Runtime type information
  78         TypeName("RutlandFlashBoil");
  79
  80
  81     // Constructors
  82
  83         //- Construct from dictionary
  84         RutlandFlashBoil
  85         (
  86             const dictionary& dict
  87         );
  88
  89
  90     // Destructor
  91
  92         ~RutlandFlashBoil();
  93
  94
  95     // Member Functions
  96
  97         bool evaporation() const;
  98
  99        //- Correlation for the Sherwood Number
 100         scalar Sh
 101         (
 102             const scalar ReynoldsNumber,
 103             const scalar SchmidtNumber
 104         ) const;
 105
 106         //- Return the evaporation relaxation time
 107         scalar relaxationTime
 108         (
 109             const scalar diameter,
 110             const scalar liquidDensity,
 111             const scalar rhoFuelVapor,
 112             const scalar massDiffusionCoefficient,
 113             const scalar ReynoldsNumber,
 114             const scalar SchmidtNumber,
 115             const scalar Xs,
 116             const scalar Xf,
 117             const scalar m0,
 118             const scalar dm,
 119             const scalar dt
 120         ) const;
 121
 122         scalar boilingTime
 123         (
 124             const scalar liquidDensity,
 125             const scalar cpFuel,
 126             const scalar heatOfVapour,
 127             const scalar kappa,
 128             const scalar Nusselt,
 129             const scalar deltaTemp,
 130             const scalar diameter,
 131             const scalar liquidCore,
 132             const scalar time,
 133             const scalar tDrop,
 134             const scalar tBoilingSurface,
 135             const scalar vapourSurfaceEnthalpy,
 136             const scalar vapourFarEnthalpy,
 137             const scalar cpGas,
 138             const scalar temperature,
 139             const scalar kLiquid
 140         ) const;
 141
 142         inline label nEvapIter() const;
 143 };
 144
 145
 146 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 147
 148 } // End namespace Foam
 149
 150 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 151
 152 #endif
 153
 154 // ************************************************************************* //