APIdiffCoefFunc.H
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25
26Class
27 Foam::APIdiffCoefFunc
28
29Description
30 API function for vapour mass diffusivity
31
32 Source:
33 \verbatim
34 API (American Petroleum Institute)
35 Technical Data Book
36 \endverbatim
37
38\*---------------------------------------------------------------------------*/
39
40#ifndef APIdiffCoefFunc_H
41#define APIdiffCoefFunc_H
42
44
45// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
46
47namespace Foam
48{
49
50/*---------------------------------------------------------------------------*\
51 Class APIdiffCoefFunc Declaration
52\*---------------------------------------------------------------------------*/
55:
57{
58 // Private data
59
60 // API vapour mass diffusivity function coefficients
61 scalar a_, b_, wf_, wa_;
62
63 // Helper variables
64 scalar alpha_, beta_;
65
66
67public:
68
69 //- Runtime type information
70 TypeName("APIdiffCoefFunc");
71
72
73 // Constructors
74
75 //- Construct from components
77 (
78 const scalar a,
79 const scalar b,
80 const scalar wf,
81 const scalar wa
82 );
83
84 //- Construct from dictionary
86
87
88 // Member Functions
89
90 //- API vapour mass diffusivity function using properties from
91 // construction
92 scalar f(scalar p, scalar T) const
93 {
94 return 3.6059e-3*(pow(1.8*T, 1.75))*alpha_/(p*beta_);
95 }
96
97 //- API vapour mass diffusivity function using properties from
98 // construction - with specified binary pair
99 scalar f(scalar p, scalar T, scalar Wa) const
100 {
101 const scalar alphaBinary = sqrt(1/wf_ + 1/Wa);
102 return 3.6059e-3*(pow(1.8*T, 1.75))*alphaBinary/(p*beta_);
103 }
104
105 //- Write the function coefficients
106 void writeData(Ostream& os) const
107 {
108 os << a_ << token::SPACE
109 << b_ << token::SPACE
110 << wf_ << token::SPACE
111 << wa_;
112 }
113
114
115 // Ostream Operator
117 friend Ostream& operator<<(Ostream& os, const APIdiffCoefFunc& f)
118 {
119 f.writeData(os);
120 return os;
121 }
122};
123
124
125// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
126
127} // End namespace Foam
128
129// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
130
131#endif
132
133// ************************************************************************* //
API function for vapour mass diffusivity.
void writeData(Ostream &os) const
Write the function coefficients.
scalar f(scalar p, scalar T) const
API vapour mass diffusivity function using properties from.
friend Ostream & operator<<(Ostream &os, const APIdiffCoefFunc &f)
TypeName("APIdiffCoefFunc")
Runtime type information.
An Ostream is an abstract base class for all output systems (streams, files, token lists,...
Definition: Ostream.H:62
A list of keyword definitions, which are a keyword followed by a number of values (eg,...
Definition: dictionary.H:126
Abstract base class for thermo-physical functions.
@ SPACE
Space [isspace].
Definition: token.H:125
volScalarField & p
const volScalarField & T
OBJstream os(runTime.globalPath()/outputName)
Namespace for OpenFOAM.
dimensionedScalar pow(const dimensionedScalar &ds, const dimensionedScalar &expt)
dimensionedScalar sqrt(const dimensionedScalar &ds)
dictionary dict
volScalarField & b
Definition: createFields.H:27
#define TypeName(TypeNameString)
Declare a ClassName() with extra virtual type info.
Definition: typeInfo.H:73