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========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration | Website: https://openfoam.org
\\ / A nd | Copyright (C) 2025 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/>.
Class
Foam::zoneGenerators::annulus
Description
A zoneGenerator which selects points, cells or faces with centres either
inside or outside a annulus.
By default all the points, cells or faces of the mesh are tested for being
inside or outside the annulus but an optional single zone or list of zones
may be provided and those points, cells or faces are tested instead. This
provides an efficient method of hierarchical sub-division of space where an
initial selection of points cells or faces is refined by selecting the
sub-set inside or outside the given annulus rather than having to generate
another zone to intersect with.
Usage
\table
Property | Description | Required | Default value
type | Type: annulus | yes |
name | Name of the zone | no | zoneGenerator name
zoneType | Type of zone | yes |
select | Select either the inside or outside | no | inside
point1 | First point on annulus axis | yes |
point2 | Second point on annulus axis | yes |
outerRadius | Outer radius of the annulus | yes |
innerRadius | Inner radius of the annulus | yes |
zone | Optional zone to sub-set | no |
zones | Optional list of zones to sub-set | no |
\endtable
A cellZone named \c annulus1 containing the cells with centres inside
a annulus is generated by
\verbatim
annulus1
{
type annulus;
zoneType cell;
point1 (-0.0075 0 -1);
point2 (-0.003 0.0025 1);
outerRadius 0.002;
innerRadius 0.001;
}
\endverbatim
SourceFiles
annulus.C
\*---------------------------------------------------------------------------*/
#ifndef annulus_zoneGenerator_H
#define annulus_zoneGenerator_H
#include "volume.H"
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
namespace Foam
{
namespace zoneGenerators
{
/*---------------------------------------------------------------------------*\
Class annulus Declaration
\*---------------------------------------------------------------------------*/
class annulus
:
public volume
{
// Private Data
//- First point on annulus axis
vector point1_;
//- Second point on annulus axis
vector point2_;
//- Outer Radius
scalar outerRadius_;
//- Inner Radius
scalar innerRadius_;
//- Axis vector calculated from point1_ and point2_
vector axis_;
//- Magnitude of the axis vector squared calculated from axis_
scalar magAxis2_;
//- Outer radius squared
scalar outerRadius2_;
//- Inner radius squared
scalar innerRadius2_;
// Private Member Functions
friend class volume;
//- Return true if the annuluses contain the given point
inline bool contains(const point& p) const;
public:
//- Runtime type information
TypeName("annulus");
// Constructors
//- Construct from dictionary
annulus
(
const word& name,
const polyMesh& mesh,
const dictionary& dict
);
//- Destructor
virtual ~annulus();
// Member Functions
virtual zoneSet generate() const;
};
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
} // End namespace zoneGenerators
} // End namespace Foam
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
#endif
// ************************************************************************* //
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