sponge.h

波浪数值模拟

/*
 * Copyright (c) 2001-2005 Falk Feddersen
 *
 * This program 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 2 of the License, or
 * (at your option) any later version.
 *
 * This program 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 this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */



/* sponge.h   Falk Feddersen */       

#ifndef SPONGE_H
#define SPONGE_H

#include "bdefs.h"

/* Right now the sponge layer only works on the x boundaries */

typedef struct {
  switch_t  sponge_layer_flag;   // sponge layer either on/off
  int ix0_width;          // width of the sponge layer starting at x=0 (the shore)
  int ixL_width; ;        // width of the sponge layer starting at x=Lx (the far boundary)
  double cspg1;        // factor that goes in front of Wspg1
  double cspg2;        // factor that goes in front of Wspg1
  double cspg3;        // factor that goes in front of Wspg1
  double frequency;     // this is the wave frequency
  switch_t auto_flag;  // if ==ON then figure out cspg1--3 automatically
} sponge_layer_info_t;



void  init_sponge_layer(sponge_layer_info_t *S, int nx, int ny);
void  deallocate_sponge_layer();
void  rhs_uvmom_sponge_layer_add(field2D *UT, field2D *VT, const field2D *U, const field2D *V);
//                             const field2D *LAP_U, const field2D *LAP_V);

void  sponge_layer_stability_report( double dt );


#endif /* SPONGE_H */