laplaceFilter.C 4.22 KB
Newer Older
1
2
3
4
/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     |
5
    \\  /    A nd           | Copyright (C) 2011-2016 OpenFOAM Foundation
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
     \\/     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 "laplaceFilter.H"
#include "addToRunTimeSelectionTable.H"
#include "calculatedFvPatchFields.H"
#include "fvm.H"
#include "fvc.H"

// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //

namespace Foam
{
    defineTypeNameAndDebug(laplaceFilter, 0);
    addToRunTimeSelectionTable(LESfilter, laplaceFilter, dictionary);
}


// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //

Foam::laplaceFilter::laplaceFilter(const fvMesh& mesh, scalar widthCoeff)
:
    LESfilter(mesh),
    widthCoeff_(widthCoeff),
    coeff_
    (
        IOobject
        (
            "laplaceFilterCoeff",
            mesh.time().timeName(),
            mesh
        ),
        mesh,
        dimensionedScalar("zero", dimLength*dimLength, 0),
        calculatedFvPatchScalarField::typeName
    )
{
60
    coeff_.ref() = pow(mesh.V(), 2.0/3.0)/widthCoeff_;
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
}


Foam::laplaceFilter::laplaceFilter(const fvMesh& mesh, const dictionary& bd)
:
    LESfilter(mesh),
    widthCoeff_(readScalar(bd.subDict(type() + "Coeffs").lookup("widthCoeff"))),
    coeff_
    (
        IOobject
        (
            "laplaceFilterCoeff",
            mesh.time().timeName(),
            mesh
        ),
        mesh,
        dimensionedScalar("zero", dimLength*dimLength, 0),
        calculatedFvPatchScalarField::typeName
    )
{
81
    coeff_.ref() = pow(mesh.V(), 2.0/3.0)/widthCoeff_;
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
}


// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //

void Foam::laplaceFilter::read(const dictionary& bd)
{
    bd.subDict(type() + "Coeffs").lookup("widthCoeff") >> widthCoeff_;
}


// * * * * * * * * * * * * * * * Member Operators  * * * * * * * * * * * * * //

Foam::tmp<Foam::volScalarField> Foam::laplaceFilter::operator()
(
    const tmp<volScalarField>& unFilteredField
) const
{
100
101
    correctBoundaryConditions(unFilteredField);

102
103
104
105
106
107
108
109
110
111
112
113
114
115
    tmp<volScalarField> filteredField =
        unFilteredField() + fvc::laplacian(coeff_, unFilteredField());

    unFilteredField.clear();

    return filteredField;
}


Foam::tmp<Foam::volVectorField> Foam::laplaceFilter::operator()
(
    const tmp<volVectorField>& unFilteredField
) const
{
116
117
    correctBoundaryConditions(unFilteredField);

118
119
120
121
122
123
124
125
126
127
128
129
130
131
    tmp<volVectorField> filteredField =
        unFilteredField() + fvc::laplacian(coeff_, unFilteredField());

    unFilteredField.clear();

    return filteredField;
}


Foam::tmp<Foam::volSymmTensorField> Foam::laplaceFilter::operator()
(
    const tmp<volSymmTensorField>& unFilteredField
) const
{
132
133
    correctBoundaryConditions(unFilteredField);

134
135
136
137
138
139
140
141
142
143
144
145
146
147
    tmp<volSymmTensorField> filteredField =
        unFilteredField() + fvc::laplacian(coeff_, unFilteredField());

    unFilteredField.clear();

    return filteredField;
}


Foam::tmp<Foam::volTensorField> Foam::laplaceFilter::operator()
(
    const tmp<volTensorField>& unFilteredField
) const
{
148
149
    correctBoundaryConditions(unFilteredField);

150
151
152
153
154
155
156
157
158
159
    tmp<volTensorField> filteredField =
        unFilteredField() + fvc::laplacian(coeff_, unFilteredField());

    unFilteredField.clear();

    return filteredField;
}


// ************************************************************************* //