LehrMilliesMewes.C
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25 
26 #include "LehrMilliesMewes.H"
29 
30 // * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
31 
32 namespace Foam
33 {
34 namespace diameterModels
35 {
36 namespace binaryBreakupModels
37 {
40  (
44  );
45 }
46 }
47 }
48 
50 
51 // * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
52 
54 (
55  const populationBalanceModel& popBal,
56  const dictionary& dict
57 )
58 :
59  binaryBreakupModel(popBal, dict)
60 {}
61 
62 
63 // * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
64 
67 (
68  volScalarField& binaryBreakupRate,
69  const label i,
70  const label j
71 )
72 {
73  const phaseModel& continuousPhase = popBal_.continuousPhase();
74  const sizeGroup& fi = popBal_.sizeGroups()[i];
75  const sizeGroup& fj = popBal_.sizeGroups()[j];
76 
78  (
79  pow
80  (
81  popBal_.sigmaWithContinuousPhase(fj.phase())/continuousPhase.rho(),
82  3.0/5.0
83  )
84  /pow(popBal_.continuousTurbulence().epsilon(), 2.0/5.0)
85  );
86 
87  // Reset of dimension to pure length to avoid problems in transcendental
88  // functions due to small exponents
90 
91  const volScalarField T
92  (
93  pow
94  (
95  popBal_.sigmaWithContinuousPhase(fj.phase())/continuousPhase.rho(),
96  2.0/5.0
97  )
98  /pow(popBal_.continuousTurbulence().epsilon(), 3.0/5.0)
99  );
100 
101  binaryBreakupRate +=
102  0.5*pow(fj.dSph()/L, 5.0/3.0)
103  *exp(-sqrt(2.0)/pow3(fj.dSph()/L))
104  *6/pow(pi, 1.5)/pow3(fi.dSph()/L)
105  *exp(-9.0/4.0*sqr(log(pow(2.0, 0.4)*fi.dSph()/L)))
106  /max(1 + erf(1.5*log(pow(2.0, 1.0/15.0)*fj.dSph()/L)), small)
107  /(T*pow3(L));
108 }
109 
110 
111 // ************************************************************************* //
Macros for easy insertion into run-time selection tables.
const dimensionSet & dimensions() const
Return dimensions.
Generic GeometricField class.
Base class for binary breakup models that provide a breakup rate between a size class pair directly,...
Model of Lehr et al. (2002). The breakup rate is calculated by.
LehrMilliesMewes(const populationBalanceModel &popBal, const dictionary &dict)
virtual void addToBinaryBreakupRate(volScalarField &binaryBreakupRate, const label i, const label j)
Add to binary breakupRate.
Model for tracking the evolution of a dispersed phase size distribution due to coalescence (synonymou...
Single size class fraction field representing a fixed particle volume as defined by the user through ...
Definition: sizeGroup.H:102
const dimensionedScalar & dSph() const
Return representative spherical diameter of the sizeGroup.
Definition: sizeGroupI.H:51
const phaseModel & phase() const
Return const-reference to the phase.
Definition: sizeGroupI.H:37
A list of keyword definitions, which are a keyword followed by any number of values (e....
Definition: dictionary.H:162
void reset(const dimensionSet &)
Definition: dimensionSet.C:129
virtual const volScalarField & rho() const =0
Return the density field.
addToRunTimeSelectionTable(binaryBreakupModel, LehrMilliesMewes, dictionary)
Namespace for OpenFOAM.
dimensionedScalar exp(const dimensionedScalar &ds)
intWM_LABEL_SIZE_t label
A label is an int32_t or int64_t as specified by the pre-processor macro WM_LABEL_SIZE.
Definition: label.H:59
dimensionedSymmTensor sqr(const dimensionedVector &dv)
dimensionedScalar pow3(const dimensionedScalar &ds)
dimensionedScalar erf(const dimensionedScalar &ds)
const dimensionSet dimLength
dimensionedScalar log(const dimensionedScalar &ds)
dimensionedScalar pow(const dimensionedScalar &ds, const dimensionedScalar &expt)
dimensionedScalar sqrt(const dimensionedScalar &ds)
layerAndWeight max(const layerAndWeight &a, const layerAndWeight &b)
void T(FieldField< Field, Type > &f1, const FieldField< Field, Type > &f2)
dictionary dict