eta_source.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
 *
 */



/* eta_source.h   Falk Feddersen */       

#ifndef ETA_SOURCE_H
#define ETA_SOURCE_H

#include "bdefs.h"

typedef enum {
  MONOCHROMATIC, RANDOM1, RANDOM2   /* R1 = E(f)E(\theta_0),  R2 = E(f,theta) */
} wave_t;

typedef enum {
  RANDOM1_NARROW_BAND,  RANDOM1_FILE
} random1_subtype;

typedef enum {
  RANDOM2_NARROW_BAND,  RANDOM2_FILE_A
} random2_subtype;

typedef struct {
  switch_t  eta_source_flag;  // wave source on or off
  wave_t wave_type;           // the type of wave field
  random1_subtype subtype1;    // if wave_type==RANDOM1 then this is the subtype (NB, file, etc)  
  random2_subtype subtype2;    // if wave_type==RANDOM1 then this is the subtype (NB, file, etc)
  GString *spectrum_file;     // the name of the input spectrum file if required
  double frequency;           // the wave frequenncy
  double H;                   // the intended wave height
  double theta;               // the wave angle in degrees - what is the sign convention??
  int icenter;                // the center of the wave source function in eta i coordintes 
  double delta;               // the parameter related to the width of the eta source region

  /* these are the RANDOM1 things */

  double fwidth;
  int numfreq;

  /* RANDOM 2 things */

  double spread;


} eta_source_info_t;



void  init_eta_source(eta_source_info_t *ES, int nx, int ny, double dt);
void  deallocate_eta_source();
void  rhs_calc_eta_source_f_add(field2D *ET1);
void  eta_source_report();



#endif /* ETA_SOURCE_H */