00001 /*---------------------------------------------------------------------------*\ 00002 ========= | 00003 \\ / F ield | OpenFOAM: The Open Source CFD Toolbox 00004 \\ / O peration | 00005 \\ / A nd | Copyright (C) 1991-2010 OpenCFD Ltd. 00006 \\/ M anipulation | 00007 ------------------------------------------------------------------------------- 00008 License 00009 This file is part of OpenFOAM. 00010 00011 OpenFOAM is free software: you can redistribute it and/or modify it 00012 under the terms of the GNU General Public License as published by 00013 the Free Software Foundation, either version 3 of the License, or 00014 (at your option) any later version. 00015 00016 OpenFOAM is distributed in the hope that it will be useful, but WITHOUT 00017 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 00018 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 00019 for more details. 00020 00021 You should have received a copy of the GNU General Public License 00022 along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>. 00023 00024 Class 00025 Foam::solidBodyMotionFunctions::SDA 00026 00027 Description 00028 Ship design analysis (SDA) 3DoF motion function. 00029 00030 Comprising sinusoidal roll (rotation about x), heave (z-translation) 00031 and sway (y-translation) motions with changing amplitude and phase. 00032 00033 See Also 00034 SKA (Sea Keeping Analysis) for 6DoF motion. 00035 00036 SourceFiles 00037 SDA.C 00038 00039 \*---------------------------------------------------------------------------*/ 00040 00041 #ifndef SDA_H 00042 #define SDA_H 00043 00044 #include <dynamicFvMesh/solidBodyMotionFunction.H> 00045 00046 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // 00047 00048 namespace Foam 00049 { 00050 namespace solidBodyMotionFunctions 00051 { 00052 00053 /*---------------------------------------------------------------------------*\ 00054 Class SDA Declaration 00055 \*---------------------------------------------------------------------------*/ 00056 00057 class SDA 00058 : 00059 public solidBodyMotionFunction 00060 { 00061 // Private data 00062 00063 //- Center of gravity 00064 vector CofG_; 00065 00066 //- Model scale ratio 00067 scalar lamda_; 00068 00069 //- Max roll amplitude [rad] 00070 scalar rollAmax_; 00071 00072 //- Min roll amplitude [rad] 00073 scalar rollAmin_; 00074 00075 //- Heave amplitude [m] 00076 scalar heaveA_; 00077 00078 //- Sway amplitude [m] 00079 scalar swayA_; 00080 00081 //- Damping Coefficient [-] 00082 scalar Q_; 00083 00084 //- Time Period for liquid [sec] 00085 scalar Tp_; 00086 00087 //- Natural Period of Ship [sec] 00088 scalar Tpn_; 00089 00090 //- Reference time step [sec] 00091 scalar dTi_; 00092 00093 //- Incr. in Tp/unit 'dTi'[-] 00094 scalar dTp_; 00095 00096 00097 // Private Member Functions 00098 00099 //- Disallow copy construct 00100 SDA(const SDA&); 00101 00102 //- Disallow default bitwise assignment 00103 void operator=(const SDA&); 00104 00105 00106 public: 00107 00108 //- Runtime type information 00109 TypeName("SDA"); 00110 00111 00112 // Constructors 00113 00114 //- Construct from components 00115 SDA 00116 ( 00117 const dictionary& SBMFCoeffs, 00118 const Time& runTime 00119 ); 00120 00121 00122 // Destructor 00123 00124 virtual ~SDA(); 00125 00126 00127 // Member Functions 00128 00129 //- Return the solid-body motion transformation septernion 00130 virtual septernion transformation() const; 00131 00132 //- Update properties from given dictionary 00133 virtual bool read(const dictionary& SBMFCoeffs); 00134 }; 00135 00136 00137 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // 00138 00139 } // End namespace solidBodyMotionFunctions 00140 } // End namespace Foam 00141 00142 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // 00143 00144 #endif 00145 00146 // ************************ vim: set sw=4 sts=4 et: ************************ //
