Line data    Source code

       1              : /*
       2              :  * Copyright (c) 2014-2015:  G-CSC, Goethe University Frankfurt
       3              :  * Author: Andreas Vogel
       4              :  * 
       5              :  * This file is part of UG4.
       6              :  * 
       7              :  * UG4 is free software: you can redistribute it and/or modify it under the
       8              :  * terms of the GNU Lesser General Public License version 3 (as published by the
       9              :  * Free Software Foundation) with the following additional attribution
      10              :  * requirements (according to LGPL/GPL v3 §7):
      11              :  * 
      12              :  * (1) The following notice must be displayed in the Appropriate Legal Notices
      13              :  * of covered and combined works: "Based on UG4 (www.ug4.org/license)".
      14              :  * 
      15              :  * (2) The following notice must be displayed at a prominent place in the
      16              :  * terminal output of covered works: "Based on UG4 (www.ug4.org/license)".
      17              :  * 
      18              :  * (3) The following bibliography is recommended for citation and must be
      19              :  * preserved in all covered files:
      20              :  * "Reiter, S., Vogel, A., Heppner, I., Rupp, M., and Wittum, G. A massively
      21              :  *   parallel geometric multigrid solver on hierarchically distributed grids.
      22              :  *   Computing and visualization in science 16, 4 (2013), 151-164"
      23              :  * "Vogel, A., Reiter, S., Rupp, M., Nägel, A., and Wittum, G. UG4 -- a novel
      24              :  *   flexible software system for simulating pde based models on high performance
      25              :  *   computers. Computing and visualization in science 16, 4 (2013), 165-179"
      26              :  * 
      27              :  * This program is distributed in the hope that it will be useful,
      28              :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
      29              :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
      30              :  * GNU Lesser General Public License for more details.
      31              :  */
      32              : 
      33              : #ifndef __H__UG__LIB_DISC__SPATIAL_DISC__ROTATING_VELOCITY__
      34              : #define __H__UG__LIB_DISC__SPATIAL_DISC__ROTATING_VELOCITY__
      35              : 
      36              : #include "lib_disc/spatial_disc/user_data/std_glob_pos_data.h"
      37              : 
      38              : namespace ug{
      39              : 
      40              : class RotatingVelocity2d
      41              :         : public StdGlobPosData<RotatingVelocity2d, MathVector<2>, 2>
      42              : {
      43              :         public:
      44            0 :                 RotatingVelocity2d(double _cx, double _cy, double _nu)
      45            0 :                         : cx(_cx), cy(_cy), nu(_nu)
      46            0 :                 {};
      47              : 
      48              :                 inline void evaluate(MathVector<2>& val, const MathVector<2>& pos, number time, int si) const
      49              :                 {
      50            0 :                         const number x = pos[0];
      51            0 :                         const number y = pos[1];
      52              : 
      53            0 :                         val[0] = nu*(y - cx);
      54            0 :                         val[1] = nu*(cy - x);
      55              :                 }
      56              : 
      57              :         protected:
      58              :                 double cx, cy, nu;
      59              : };
      60              : 
      61              : }
      62              : #endif