PISM, A Parallel Ice Sheet Model  stable v2.1-1-g6902d5502 committed by Ed Bueler on 2023-12-20 08:38:27 -0800
ssafd_code.cc
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1 const double dx2 = dx*dx, dy2 = dy*dy, d4 = 4*dx*dy, d2 = 2*dx*dy;
2
3 /* Coefficients of the discretization of the first equation; u first, then v. */
4 double eq1[] = {
5  0, -c_n/dy2, 0,
6  -4*c_w/dx2, (c_s+c_n)/dy2+(4*c_w+4*c_e)/dx2, -4*c_e/dx2,
7  0, -c_s/dy2, 0,
8  c_n/d4+c_w/d2, (c_w-c_e)/d2, -c_n/d4-c_e/d2,
9  (c_n-c_s)/d4, 0, (c_s-c_n)/d4,
10  -c_s/d4-c_w/d2, (c_e-c_w)/d2, c_s/d4+c_e/d2,
11 };
12
13 /* Coefficients of the discretization of the second equation; u first, then v. */
14 double eq2[] = {
15  c_w/d4+c_n/d2, (c_w-c_e)/d4, -c_e/d4-c_n/d2,
16  (c_n-c_s)/d2, 0, (c_s-c_n)/d2,
17  -c_w/d4-c_s/d2, (c_e-c_w)/d4, c_e/d4+c_s/d2,
18  0, -4*c_n/dy2, 0,
19  -c_w/dx2, (4*c_s+4*c_n)/dy2+(c_w+c_e)/dx2, -c_e/dx2,
20  0, -4*c_s/dy2, 0,
21 };
22
23 /* i indices */
24 const int I[] = {
25  i-1, i, i+1,
26  i-1, i, i+1,
27  i-1, i, i+1,
28  i-1, i, i+1,
29  i-1, i, i+1,
30  i-1, i, i+1,
31 };
32
33 /* j indices */
34 const int J[] = {
35  j+1, j+1, j+1,
36  j, j, j,
37  j-1, j-1, j-1,
38  j+1, j+1, j+1,
39  j, j, j,
40  j-1, j-1, j-1,
41 };
42
43 /* component indices */
44 const int C[] = {
45  0, 0, 0,
46  0, 0, 0,
47  0, 0, 0,
48  1, 1, 1,
49  1, 1, 1,
50  1, 1, 1,
51 };
52
const int J[]
Definition: ssafd_code.cc:34
double eq1[]
Definition: ssafd_code.cc:4
const int I[]
Definition: ssafd_code.cc:24
const double d2
Definition: ssafd_code.cc:1
const int C[]
Definition: ssafd_code.cc:44
const double d4
Definition: ssafd_code.cc:1
const double dy2
Definition: ssafd_code.cc:1
double eq2[]
Definition: ssafd_code.cc:14
const double dx2
Definition: ssafd_code.cc:1