OpenFOAM: API Guide
v2112
The open source CFD toolbox
CrankNicolson.C
Go to the documentation of this file.
1
/*---------------------------------------------------------------------------*\
2
========= |
3
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
4
\\ / O peration |
5
\\ / A nd | www.openfoam.com
6
\\/ M anipulation |
7
-------------------------------------------------------------------------------
8
Copyright (C) 2015 OpenFOAM Foundation
9
Copyright (C) 2020 OpenCFD Ltd.
10
-------------------------------------------------------------------------------
11
License
12
This file is part of OpenFOAM.
13
14
OpenFOAM is free software: you can redistribute it and/or modify it
15
under the terms of the GNU General Public License as published by
16
the Free Software Foundation, either version 3 of the License, or
17
(at your option) any later version.
18
19
OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
20
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
21
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
22
for more details.
23
24
You should have received a copy of the GNU General Public License
25
along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
26
27
\*---------------------------------------------------------------------------*/
28
29
#include "
CrankNicolson.H
"
30
#include "
addToRunTimeSelectionTable.H
"
31
32
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
33
34
namespace
Foam
35
{
36
namespace
sixDoFSolvers
37
{
38
defineTypeNameAndDebug
(
CrankNicolson
, 0);
39
addToRunTimeSelectionTable
(
sixDoFSolver
,
CrankNicolson
,
dictionary
);
40
}
41
}
42
43
44
// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
45
46
Foam::sixDoFSolvers::CrankNicolson::CrankNicolson
47
(
48
const
dictionary
&
dict
,
49
sixDoFRigidBodyMotion
& body
50
)
51
:
52
sixDoFSolver
(
dict
, body),
53
aoc_(
dict
.getOrDefault<scalar>(
"aoc"
, 0.5)),
54
voc_(
dict
.getOrDefault<scalar>(
"voc"
, 0.5))
55
{}
56
57
58
// * * * * * * * * * * * * * * * * Destructor * * * * * * * * * * * * * * * //
59
60
Foam::sixDoFSolvers::CrankNicolson::~CrankNicolson
()
61
{}
62
63
64
// * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
65
66
void
Foam::sixDoFSolvers::CrankNicolson::solve
67
(
68
bool
firstIter,
69
const
vector
& fGlobal,
70
const
vector
& tauGlobal,
71
scalar deltaT,
72
scalar deltaT0
73
)
74
{
75
// Update the linear acceleration and torque
76
updateAcceleration(fGlobal, tauGlobal);
77
78
// Correct linear velocity
79
v() = tConstraints()
80
& (v0() + aDamp()*deltaT*(aoc_*a() + (1 - aoc_)*
a0
()));
81
82
// Correct angular momentum
83
pi
() = rConstraints()
84
& (pi0() + aDamp()*deltaT*(aoc_*tau() + (1 - aoc_)*tau0()));
85
86
// Correct position
87
centreOfRotation() =
88
centreOfRotation0() + deltaT*(voc_*v() + (1 - voc_)*v0());
89
90
// Correct orientation
91
Tuple2<tensor, vector>
Qpi =
92
rotate(Q0(), (voc_*
pi
() + (1 - voc_)*pi0()), deltaT);
93
Q() = Qpi.first();
94
}
95
96
// ************************************************************************* //
Foam::sixDoFSolvers::CrankNicolson::solve
virtual void solve(bool firstIter, const vector &fGlobal, const vector &tauGlobal, scalar deltaT, scalar deltaT0)
Drag coefficient.
Definition:
CrankNicolson.C:67
Foam::sixDoFSolver
Definition:
sixDoFSolver.H:54
Foam::sixDoFSolvers::CrankNicolson
Crank-Nicolson 2nd-order time-integrator for 6DoF solid-body motion.
Definition:
CrankNicolson.H:74
Foam::sixDoFSolvers::CrankNicolson::CrankNicolson
CrankNicolson(const dictionary &dict, sixDoFRigidBodyMotion &body)
Construct from a dictionary and the body.
Definition:
CrankNicolson.C:47
Foam::sixDoFSolvers::defineTypeNameAndDebug
defineTypeNameAndDebug(CrankNicolson, 0)
Foam::sixDoFSolvers::addToRunTimeSelectionTable
addToRunTimeSelectionTable(sixDoFSolver, CrankNicolson, dictionary)
dict
dictionary dict
Definition:
searchingEngine.H:14
CrankNicolson.H
Foam::dictionary
A list of keyword definitions, which are a keyword followed by a number of values (eg,...
Definition:
dictionary.H:123
addToRunTimeSelectionTable.H
Macros for easy insertion into run-time selection tables.
Foam
Namespace for OpenFOAM.
Definition:
atmBoundaryLayer.C:33
Foam::constant::atomic::a0
const dimensionedScalar a0
Bohr radius: default SI units: [m].
Foam::sixDoFRigidBodyMotion
Six degree of freedom motion for a rigid body.
Definition:
sixDoFRigidBodyMotion.H:69
Foam::constant::mathematical::pi
constexpr scalar pi(M_PI)
Foam::Vector< scalar >
Foam::Tuple2
A 2-tuple for storing two objects of dissimilar types. The container is similar in purpose to std::pa...
Definition:
stringOps.H:60
Foam::sixDoFSolvers::CrankNicolson::~CrankNicolson
virtual ~CrankNicolson()
Destructor.
Definition:
CrankNicolson.C:60
src
sixDoFRigidBodyMotion
sixDoFSolvers
CrankNicolson
CrankNicolson.C
Generated by
1.8.17
OPENFOAM® is a registered
trademark
of OpenCFD Ltd.