GRASS GIS 8 Programmer's Manual  8.4.0dev(2024)-6da4f45b8e
N_solute_transport.h
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1 /*****************************************************************************
2  *
3  * MODULE: Grass PDE Numerical Library
4  * AUTHOR(S): Soeren Gebbert, Berlin (GER) Dec 2006
5  * soerengebbert <at> gmx <dot> de
6  *
7  * PURPOSE: solute transport in porous media
8  * part of the gpde library
9  *
10  * COPYRIGHT: (C) 2000 by the GRASS Development Team
11  *
12  * This program is free software under the GNU General Public
13  * License (>=v2). Read the file COPYING that comes with GRASS
14  * for details.
15  *
16  *****************************************************************************/
17 
18 #include "N_pde.h"
19 
20 #ifndef _N_SOLUTE_TRANSPORT_H_
21 #define _N_SOLUTE_TRANSPORT_H_
22 
23 typedef struct {
24  N_array_3d *c; /*concentration */
25  N_array_3d *c_start; /*concentration at start */
26  N_array_3d *diff_x; /*x part of the diffusion tensor */
27  N_array_3d *diff_y; /*y part of the diffusion tensor */
28  N_array_3d *diff_z; /*z part of the diffusion tensor */
29  N_array_3d *nf; /*effective porosity */
30  N_array_3d *cs; /*concentration sources and sinks */
31  N_array_3d *q; /*well sources and sinks */
32  N_array_3d *R; /*retardation */
33  N_array_3d *cin; /*concentration input from wells */
34 
35  N_gradient_field_3d *grad; /*velocity field */
36 
37  N_array_3d *status; /*active/inactive/dirichlet cell status */
38 
39  N_array_3d *disp_xx; /*x part of the dispersivity tensor */
40  N_array_3d *disp_yy; /*x part of the dispersivity tensor */
41  N_array_3d *disp_zz; /*x part of the dispersivity tensor */
42  N_array_3d *disp_xy; /*xy part of the dispersivity tensor */
43  N_array_3d *disp_xz; /*xz part of the dispersivity tensor */
44  N_array_3d *disp_yz; /*yz part of the dispersivity tensor */
45 
46  double dt; /*calculation time */
47  double al, at; /*dispersivity length longditudinal and transversal */
48  int stab; /*stabilization criteria */
49 
51 
52 typedef struct {
53  N_array_2d *c; /*concentration */
54  N_array_2d *c_start; /*concentration at start */
55  N_array_2d *diff_x; /*x part of the diffusion tensor */
56  N_array_2d *diff_y; /*y part of the diffusion tensor */
57  N_array_2d *nf; /*effective porosity */
58  N_array_2d *cs; /*concentration sources and sinks */
59  N_array_2d *q; /*well sources and sinks */
60  N_array_2d *R; /*retardation */
61  N_array_2d *cin; /*concentration */
62 
63  N_gradient_field_2d *grad; /*velocity field */
64 
65  N_array_2d *status; /*active/inactive/dirichlet cell status */
66  N_array_2d *top; /* top surface of the aquifer */
67  N_array_2d *bottom; /* bottom surface of the aquifer */
68 
69  N_array_2d *disp_xx; /*x part of the dispersivity tensor */
70  N_array_2d *disp_yy; /*x part of the dispersivity tensor */
71  N_array_2d *disp_xy; /*xy part of the dispersivity tensor */
72 
73  double dt; /*calculation time */
74  double al, at; /*dispersivity length longditudinal and transversal */
75  int stab; /*stabilization criteria */
76 
78 
79 extern N_data_star *N_callback_solute_transport_3d(void *solutedata,
80  N_geom_data *geom, int col,
81  int row, int depth);
82 extern N_data_star *N_callback_solute_transport_2d(void *solutedata,
83  N_geom_data *geom, int col,
84  int row);
86 N_alloc_solute_transport_data3d(int cols, int rows, int depths);
88  int rows);
91 
92 /*compute the dispersivity tensor */
93 extern void
95 extern void
97 extern void
99 extern void
101 #endif
N_data_star * N_callback_solute_transport_2d(void *solutedata, N_geom_data *geom, int col, int row)
This callback function creates the mass balance of a 5 point star.
void N_calc_solute_transport_disptensor_2d(N_solute_transport_data2d *data)
Compute the dispersivity tensor based on the solute transport data in 2d.
void N_free_solute_transport_data2d(N_solute_transport_data2d *data)
Release the memory of the solute transport data structure in two dimensions.
N_solute_transport_data3d * N_alloc_solute_transport_data3d(int cols, int rows, int depths)
Allocate memory for the solute transport data structure in three dimensions.
N_solute_transport_data2d * N_alloc_solute_transport_data2d(int cols, int rows)
Allocate memory for the solute transport data structure in two dimensions.
void N_free_solute_transport_data3d(N_solute_transport_data3d *data)
Release the memory of the solute transport data structure in three dimensions.
N_data_star * N_callback_solute_transport_3d(void *solutedata, N_geom_data *geom, int col, int row, int depth)
This is just a placeholder.
void N_calc_solute_transport_transmission_2d(N_solute_transport_data2d *data)
Compute the transmission boundary condition in 2d.
void N_calc_solute_transport_transmission_3d(N_solute_transport_data3d *data)
void N_calc_solute_transport_disptensor_3d(N_solute_transport_data3d *data)
Compute the dispersivity tensor based on the solute transport data in 3d.
Matrix entries for a mass balance 5/7/9 star system.
Definition: N_pde.h:295
Geometric information about the structured grid.
Definition: N_pde.h:101
N_gradient_field_2d * grad
N_gradient_field_3d * grad