1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
|
/*---------------------------------------------------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | Copyright (C) 2011-2015 OpenFOAM Foundation
\\/ M anipulation |
-------------------------------------------------------------------------------
License
This file is part of OpenFOAM.
OpenFOAM is free software: you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
\*---------------------------------------------------------------------------*/
#include "SyamlalOBrien.H"
#include "phasePair.H"
#include "addToRunTimeSelectionTable.H"
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
namespace Foam
{
namespace dragModels
{
defineTypeNameAndDebug(SyamlalOBrien, 0);
addToRunTimeSelectionTable(dragModel, SyamlalOBrien, dictionary);
}
}
// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
Foam::dragModels::SyamlalOBrien::SyamlalOBrien
(
const dictionary& dict,
const phasePair& pair,
const bool registerObject
)
:
dragModel(dict, pair, registerObject)
{}
// * * * * * * * * * * * * * * * * Destructor * * * * * * * * * * * * * * * //
Foam::dragModels::SyamlalOBrien::~SyamlalOBrien()
{}
// * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
Foam::tmp<Foam::volScalarField> Foam::dragModels::SyamlalOBrien::CdRe() const
{
volScalarField alpha2
(
max(scalar(1) - pair_.dispersed(), pair_.continuous().residualAlpha())
);
volScalarField A(pow(alpha2, 4.14));
volScalarField B
(
neg(alpha2 - 0.85)*(0.8*pow(alpha2, 1.28))
+ pos(alpha2 - 0.85)*(pow(alpha2, 2.65))
);
volScalarField Re(pair_.Re());
volScalarField Vr
(
0.5
*(
A - 0.06*Re + sqrt(sqr(0.06*Re) + 0.12*Re*(2.0*B - A) + sqr(A))
)
);
volScalarField CdsRe(sqr(0.63*sqrt(Re) + 4.8*sqrt(Vr)));
return
CdsRe
*max(pair_.continuous(), pair_.continuous().residualAlpha())
/sqr(Vr);
}
// ************************************************************************* //
|
