LaakkonenAlopaeusAittamaa.H

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Class
    Foam::diameterModels::breakupModels::LaakkonenAlopaeusAittamaa
 
Description
    Model of Laakkonen et al. (2006). The total breakup rate is calculated by
 
    \f[
        C_1 \epsilon_c^{1/3}
        \mathrm{erfc}
        \left(
            \sqrt
            {
                C_2 \frac{\sigma}{\rho_c \epsilon_c^{2/3} (6v_i/\pi)^{5/9}}
              + C_3 \frac{\mu_c}{\sqrt{\rho_c \rho_d}
                \epsilon_c^{1/3} (6v_i/\pi)^{4/9}}
            }
        \right)
    \f]
 
    where
 
    \vartable
        \sigma      |  Surface tension [N/m]
        v_i         |  Volume of mother bubble i [m]
        \epsilon_c  |  Turbulent dissipation rate of continuous phase [m2/s3]
        \mu_c       |  Molecular dynamic viscosity of liquid phase [Pa s]
        \rho_c      |  Density of continuous phase [kg/m3]
        \rho_d      |  Density of disperse phase [kg/m3]
    \endvartable
 
    References:
    \verbatim
        Laakkonen, M., Alopaeus, V., & Aittamaa, J. (2006).
        Validation of bubble breakage, coalescence and mass transfer models for
        gas-liquid dispersion in agitated vessel.
        Chemical engineering science, 61(1), 218-228.
        Eq. 2-3, p. 220.
    \endverbatim
 
Usage
    \table
        Property     | Description             | Required    | Default value
        C1           | coefficient C1          | no          | 6.0
        C2           | coefficient C2          | no          | 0.04
        C3           | coefficient C3          | no          | 0.01
        daughterSizeDistributionModel | inh. from breakupModel | inherited |
    \endtable
 
SourceFiles
    LaakkonenAlopaeusAittamaa.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef LaakkonenAlopaeusAittamaa_H
#define LaakkonenAlopaeusAittamaa_H
 
#include "breakupModel.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
namespace diameterModels
{
namespace breakupModels
{
 
/*---------------------------------------------------------------------------*\
                  Class LaakkonenAlopaeusAittamaa Declaration
\*---------------------------------------------------------------------------*/
 
class LaakkonenAlopaeusAittamaa
:
    public breakupModel
{
    // Private data
 
        //- Optional coefficient C1, defaults to 6.0
        dimensionedScalar C1_;
 
        //- Optional coefficient C2, defaults to 0.04
        dimensionedScalar C2_;
 
        //- Optional coefficient C3, defaults to 0.01
        dimensionedScalar C3_;
 
 
public:
 
    //- Runtime type information
    TypeName("LaakkonenAlopaeusAittamaa");
 
    // Constructor
 
        LaakkonenAlopaeusAittamaa
        (
            const populationBalanceModel& popBal,
            const dictionary& dict
        );
 
 
    //- Destructor
    virtual ~LaakkonenAlopaeusAittamaa() = default;
 
 
    // Member Functions
 
        //- Set total breakupRate
        virtual void setBreakupRate
        (
            volScalarField& breakupRate,
            const label i
        );
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace breakupModels
} // End namespace diameterModels
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //