| /*---------------------------------------------------------------------------*\ | |
| ========= | | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox | |
| \\ / O peration | Website: https://openfoam.org | |
| \\ / A nd | Copyright (C) 2011-2026 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::solidBodyMotionFunctions::SDA | |
| Description | |
| Ship design analysis (SDA) 3DoF motion function. | |
| Comprising sinusoidal roll (rotation about x), heave (z-translation) | |
| and sway (y-translation) motions with changing amplitude and phase. | |
| See also | |
| Foam::solidBodyMotionFunctions::tabulated6DoFMotion | |
| SourceFiles | |
| SDA.C | |
| \*---------------------------------------------------------------------------*/ | |
| // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // | |
| namespace Foam | |
| { | |
| namespace solidBodyMotionFunctions | |
| { | |
| /*---------------------------------------------------------------------------*\ | |
| Class SDA Declaration | |
| \*---------------------------------------------------------------------------*/ | |
| class SDA | |
| : | |
| public solidBodyMotionFunction | |
| { | |
| // Private Data | |
| //- Center of gravity | |
| vector CofG_; | |
| //- Model scale ratio | |
| scalar lambda_; | |
| //- Max roll amplitude [rad] | |
| scalar rollAmax_; | |
| //- Min roll amplitude [rad] | |
| scalar rollAmin_; | |
| //- Heave amplitude [m] | |
| scalar heaveA_; | |
| //- Sway amplitude [m] | |
| scalar swayA_; | |
| //- Damping Coefficient [-] | |
| scalar Q_; | |
| //- Time Period for liquid [sec] | |
| scalar Tp_; | |
| //- Natural Period of Ship [sec] | |
| scalar Tpn_; | |
| //- Reference time step [sec] | |
| scalar dTi_; | |
| //- Incr. in Tp/unit 'dTi'[-] | |
| scalar dTp_; | |
| public: | |
| //- Runtime type information | |
| TypeName("SDA"); | |
| // Constructors | |
| //- Construct from components | |
| SDA | |
| ( | |
| const word& name, | |
| const dictionary& SBMFCoeffs, | |
| const Time& runTime | |
| ); | |
| //- Disallow default bitwise copy construction | |
| SDA(const SDA&) = delete; | |
| //- Construct and return a clone | |
| virtual autoPtr<solidBodyMotionFunction> clone() const | |
| { | |
| return autoPtr<solidBodyMotionFunction> | |
| ( | |
| new SDA | |
| ( | |
| name_, | |
| SBMFCoeffs_, | |
| time_ | |
| ) | |
| ); | |
| } | |
| //- Destructor | |
| virtual ~SDA(); | |
| // Member Functions | |
| //- Return the solid-body motion transformation septernion | |
| virtual septernion transformation() const; | |
| // Member Operators | |
| //- Disallow default bitwise assignment | |
| void operator=(const SDA&) = delete; | |
| }; | |
| // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // | |
| } // End namespace solidBodyMotionFunctions | |
| } // End namespace Foam | |
| // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // | |
| // ************************************************************************* // | |