forked from llodds/ecsg
-
Notifications
You must be signed in to change notification settings - Fork 0
/
update_ghost_sxz.cpp
388 lines (350 loc) · 19.9 KB
/
update_ghost_sxz.cpp
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
#include "sim_utils.hpp"
#include <algorithm> // std::min
#include <cassert>
#include <omp.h>
#include "array.hpp"
/*
sim1: ptr to dynamic fields on the fine grid
buoy1: ptr to buoyancy fields on the fine grid
sim2: ptr to dynamic fields on the coarse grid
buoy2: ptr to buoyancy fields on the coarse grid
*/
//Assume radius=1, H=2h
void UpdateGhostSXZ(Field *sim1, Field *sim2,
Field *buoy1, Field *buoy2,
real **coeff1, real **coeff2,
Array &g_sxz2, Array &A, Array &B,
Array &g_tmp,
int mode)
{
Field *vx1 = sim1, *vx2 = sim2;
Field *sxx1 = sim1+3, *sxx2 = sim2+3;
Field *sxz1 = sim1+7, *sxz2 = sim2+7;
Field *sxy1 = sim1+8, *sxy2 = sim2+8;
int nx2, ny2; //g_sxz2[0:ny2][0:nx2]
g_sxz2.size(&nx2, &ny2); nx2--; ny2--;
int nz1 = buoy1->GetEnd(2);
assert(mode==0 || mode==1);
//mode =
// 0: 2nd order accurate intuitive (energy non-conserving) interpolation
// 1: energy conserving interpolation
if(mode==0)//intuitive interpolation (2nd order accurate)
{
//update ghost sxz2
#ifdef _OPENMP
#pragma omp parallel default(shared)
#endif
{
//second order accurate approximation to ghost sxz2
#ifdef _OPENMP
#pragma omp for
#endif
for(int i1 = 1; i1 < ny2; i1++)
for(int i0 = 1; i0 < nx2; i0++)
sxz2->SetVal(i0,i1,-1) = 0.5*(sxz1->GetVal(2*i0,2*i1,nz1-2)
+ sxz1->GetVal(2*i0,2*i1,nz1-1));
//second order accurate approximation to ghost sxz1
#ifdef _OPENMP
#pragma omp for
#endif
for(int i1 = 1; i1 < ny2; i1++)
for(int i0 = 1; i0 < nx2; i0++)
sxz1->SetVal(2*i0,2*i1,nz1) = sxz1->GetVal(2*i0,2*i1,nz1-1)/3
+ sxz2->GetVal(i0,i1,0)*2/3.0;
#ifdef _OPENMP
#pragma omp for
#endif
for(int i1 = 1; i1 < ny2; i1++)
for(int i0 = 0; i0 < nx2; i0++)
sxz1->SetVal(2*i0+1,2*i1,nz1) = sxz1->GetVal(2*i0+1,2*i1,nz1-1)/3
+ sxz2->GetVal(i0,i1,0)/3 + sxz2->GetVal(i0+1,i1,0)/3;
#ifdef _OPENMP
#pragma omp for
#endif
for(int i1 = 0; i1 < ny2; i1++)
for(int i0 = 1; i0 < nx2; i0++)
sxz1->SetVal(2*i0,2*i1+1,nz1) = sxz1->GetVal(2*i0,2*i1+1,nz1-1)/3
+ sxz2->GetVal(i0,i1,0)/3 + sxz2->GetVal(i0,i1+1,0)/3;
#ifdef _OPENMP
#pragma omp for
#endif
for(int i1 = 0; i1 < ny2; i1++)
for(int i0 = 0; i0 < nx2; i0++)
sxz1->SetVal(2*i0+1,2*i1+1,nz1) = sxz1->GetVal(2*i0+1,2*i1+1,nz1-1)/3
+ sxz2->GetVal(i0,i1,0)/6 + sxz2->GetVal(i0,i1+1,0)/6
+ sxz2->GetVal(i0+1,i1,0)/6 + sxz2->GetVal(i0+1,i1+1,0)/6;
}
}else if(mode==1)//energy-conserving interpolation
{
#ifdef _OPENMP
#pragma omp parallel default(shared)
#endif
{
//compute A
#ifdef _OPENMP
#pragma omp for
#endif
for(int i1 = 0; i1 < ny2-1; i1++)
for(int i0 = 0; i0 < nx2-1; i0++)
{
A.SetVal(i0,i1,0) = (i1!=0)*(i0!=0)*0.25*buoy1->GetVal(2*i0+1,2*i1+1,nz1)*coeff1[2][0];
A.SetVal(i0,i1,1) = (i0!=0)*coeff1[2][0]*(buoy1->GetVal(2*i0+1,2*i1+2,nz1)
+ 0.25*buoy1->GetVal(2*i0+1,2*i1+3,nz1)
+ 0.25*buoy1->GetVal(2*i0+1,2*i1+1,nz1));
A.SetVal(i0,i1,2) = (i1!=ny2-2)*(i0!=0)*0.25*buoy1->GetVal(2*i0+1,2*i1+3,nz1)*coeff1[2][0];
A.SetVal(i0,i1,3) = (i1!=0)*coeff1[2][0]*(buoy1->GetVal(2*i0+2,2*i1+1,nz1)
+ 0.25*buoy1->GetVal(2*i0+3,2*i1+1,nz1)
+ 0.25*buoy1->GetVal(2*i0+1,2*i1+1,nz1));
A.SetVal(i0,i1,4) = 16*buoy2->GetVal(i0+1,i1+1,0)*coeff2[2][0]
+ coeff1[2][0]*(4*buoy1->GetVal(2*i0+2,2*i1+2,nz1)
+ buoy1->GetVal(2*i0+3,2*i1+2,nz1)
+ buoy1->GetVal(2*i0+1,2*i1+2,nz1)
+ buoy1->GetVal(2*i0+2,2*i1+3,nz1)
+ buoy1->GetVal(2*i0+2,2*i1+1,nz1)
+ 0.25*buoy1->GetVal(2*i0+3,2*i1+3,nz1)
+ 0.25*buoy1->GetVal(2*i0+1,2*i1+3,nz1)
+ 0.25*buoy1->GetVal(2*i0+3,2*i1+1,nz1)
+ 0.25*buoy1->GetVal(2*i0+1,2*i1+1,nz1));
A.SetVal(i0,i1,5) = (i1!=ny2-2)*coeff1[2][0]*(buoy1->GetVal(2*i0+2,2*i1+3,nz1)
+ 0.25*buoy1->GetVal(2*i0+3,2*i1+3,nz1)
+ 0.25*buoy1->GetVal(2*i0+1,2*i1+3,nz1));
A.SetVal(i0,i1,6) = (i1!=0)*(i0!=nx2-2)*0.25*buoy1->GetVal(2*i0+3,2*i1+1,nz1)*coeff1[2][0];
A.SetVal(i0,i1,7) = (i0!=nx2-2)*coeff1[2][0]*(buoy1->GetVal(2*i0+3,2*i1+2,nz1)
+ 0.25*buoy1->GetVal(2*i0+3,2*i1+3,nz1)
+ 0.25*buoy1->GetVal(2*i0+3,2*i1+1,nz1));
A.SetVal(i0,i1,8) = (i1!=ny2-2)*(i0!=nx2-2)*coeff1[2][0]*(0.25*buoy1->GetVal(2*i0+3,2*i1+3,nz1));
}
//compute B
#ifdef _OPENMP
#pragma omp for
#endif
for(int i1 = 0; i1 < ny2-1; i1++)
for(int i0 = 0; i0 < nx2-1; i0++)
B.SetVal(i0,i1) =
16*(vx2->GetVal(i0+1,i1+1,0)
+ buoy2->GetVal(i0+1,i1+1,0)*(coeff2[0][0]*(sxx2->GetVal(i0+1,i1+1,0)
-sxx2->GetVal(i0,i1+1,0))
+coeff2[1][0]*(sxy2->GetVal(i0+1,i1+1,0)
-sxy2->GetVal(i0+1,i1,0))
+coeff2[2][0]*sxz2->GetVal(i0+1,i1+1,0)))
- 4*(vx1->GetVal(2*i0+2,2*i1+2,nz1)
+ buoy1->GetVal(2*i0+2,2*i1+2,nz1)*(coeff1[0][0]*(sxx1->GetVal(2*i0+2,2*i1+2,nz1)
-sxx1->GetVal(2*i0+1,2*i1+2,nz1))
+coeff1[1][0]*(sxy1->GetVal(2*i0+2,2*i1+2,nz1)
-sxy1->GetVal(2*i0+2,2*i1+1,nz1))
+coeff1[2][0]*(sxz2->GetVal(i0+1,i1+1,0)
-2*sxz1->GetVal(2*i0+2,2*i1+2,nz1-1))))
- 2*(vx1->GetVal(2*i0+3,2*i1+2,nz1)
+ buoy1->GetVal(2*i0+3,2*i1+2,nz1)*(coeff1[0][0]*(sxx1->GetVal(2*i0+3,2*i1+2,nz1)
-sxx1->GetVal(2*i0+2,2*i1+2,nz1))
+coeff1[1][0]*(sxy1->GetVal(2*i0+3,2*i1+2,nz1)
-sxy1->GetVal(2*i0+3,2*i1+1,nz1))
+coeff1[2][0]*(0.5*(sxz2->GetVal(i0+1,i1+1,0)
+(i0!=nx2-2)*sxz2->GetVal(i0+2,i1+1,0))
-2*sxz1->GetVal(2*i0+3,2*i1+2,nz1-1))))
- 2*(vx1->GetVal(2*i0+1,2*i1+2,nz1)
+ buoy1->GetVal(2*i0+1,2*i1+2,nz1)*(coeff1[0][0]*(sxx1->GetVal(2*i0+1,2*i1+2,nz1)
-sxx1->GetVal(2*i0,2*i1+2,nz1))
+coeff1[1][0]*(sxy1->GetVal(2*i0+1,2*i1+2,nz1)
-sxy1->GetVal(2*i0+1,2*i1+1,nz1))
+coeff1[2][0]*(0.5*((i0!=0)*sxz2->GetVal(i0,i1+1,0)
+sxz2->GetVal(i0+1,i1+1,0))
-2*sxz1->GetVal(2*i0+1,2*i1+2,nz1-1))))
- 2*(vx1->GetVal(2*i0+2,2*i1+3,nz1)
+ buoy1->GetVal(2*i0+2,2*i1+3,nz1)*(coeff1[0][0]*(sxx1->GetVal(2*i0+2,2*i1+3,nz1)
-sxx1->GetVal(2*i0+1,2*i1+3,nz1))
+coeff1[1][0]*(sxy1->GetVal(2*i0+2,2*i1+3,nz1)
-sxy1->GetVal(2*i0+2,2*i1+2,nz1))
+coeff1[2][0]*(0.5*(sxz2->GetVal(i0+1,i1+1,0)
+(i1!=ny2-2)*sxz2->GetVal(i0+1,i1+2,0))
-2*sxz1->GetVal(2*i0+2,2*i1+3,nz1-1))))
- 2*(vx1->GetVal(2*i0+2,2*i1+1,nz1)
+ buoy1->GetVal(2*i0+2,2*i1+1,nz1)*(coeff1[0][0]*(sxx1->GetVal(2*i0+2,2*i1+1,nz1)
-sxx1->GetVal(2*i0+1,2*i1+1,nz1))
+coeff1[1][0]*(sxy1->GetVal(2*i0+2,2*i1+1,nz1)
-sxy1->GetVal(2*i0+2,2*i1,nz1))
+coeff1[2][0]*(0.5*(sxz2->GetVal(i0+1,i1+1,0)
+(i1!=0)*sxz2->GetVal(i0+1,i1,0))
-2*sxz1->GetVal(2*i0+2,2*i1+1,nz1-1))))
- (vx1->GetVal(2*i0+3,2*i1+3,nz1)
+ buoy1->GetVal(2*i0+3,2*i1+3,nz1)*(coeff1[0][0]*(sxx1->GetVal(2*i0+3,2*i1+3,nz1)
-sxx1->GetVal(2*i0+2,2*i1+3,nz1))
+coeff1[1][0]*(sxy1->GetVal(2*i0+3,2*i1+3,nz1)
-sxy1->GetVal(2*i0+3,2*i1+2,nz1))
+coeff1[2][0]*(0.25*(sxz2->GetVal(i0+1,i1+1,0)
+(i0!=nx2-2)*sxz2->GetVal(i0+2,i1+1,0)
+(i1!=ny2-2)*sxz2->GetVal(i0+1,i1+2,0)
+(i1!=ny2-2)*(i0!=nx2-2)*sxz2->GetVal(i0+2,i1+2,0))
-2*sxz1->GetVal(2*i0+3,2*i1+3,nz1-1))))
- (vx1->GetVal(2*i0+1,2*i1+3,nz1)
+ buoy1->GetVal(2*i0+1,2*i1+3,nz1)*(coeff1[0][0]*(sxx1->GetVal(2*i0+1,2*i1+3,nz1)
-sxx1->GetVal(2*i0,2*i1+3,nz1))
+coeff1[1][0]*(sxy1->GetVal(2*i0+1,2*i1+3,nz1)
-sxy1->GetVal(2*i0+1,2*i1+2,nz1))
+coeff1[2][0]*(0.25*((i0!=0)*sxz2->GetVal(i0,i1+1,0)
+sxz2->GetVal(i0+1,i1+1,0)
+(i0!=0)*(i1!=ny2-2)*sxz2->GetVal(i0,i1+2,0)
+(i1!=ny2-2)*sxz2->GetVal(i0+1,i1+2,0))
-2*sxz1->GetVal(2*i0+1,2*i1+3,nz1-1))))
- (vx1->GetVal(2*i0+3,2*i1+1,nz1)
+ buoy1->GetVal(2*i0+3,2*i1+1,nz1)*(coeff1[0][0]*(sxx1->GetVal(2*i0+3,2*i1+1,nz1)
-sxx1->GetVal(2*i0+2,2*i1+1,nz1))
+coeff1[1][0]*(sxy1->GetVal(2*i0+3,2*i1+1,nz1)
-sxy1->GetVal(2*i0+3,2*i1,nz1))
+coeff1[2][0]*(0.25*((i1!=0)*sxz2->GetVal(i0+1,i1,0)
+(i1!=0)*(i0!=nx2-2)*sxz2->GetVal(i0+2,i1,0)
+sxz2->GetVal(i0+1,i1+1,0)
+(i0!=nx2-2)*sxz2->GetVal(i0+2,i1+1,0))
-2*sxz1->GetVal(2*i0+3,2*i1+1,nz1-1))))
- (vx1->GetVal(2*i0+1,2*i1+1,nz1)
+ buoy1->GetVal(2*i0+1,2*i1+1,nz1)*(coeff1[0][0]*(sxx1->GetVal(2*i0+1,2*i1+1,nz1)
-sxx1->GetVal(2*i0,2*i1+1,nz1))
+coeff1[1][0]*(sxy1->GetVal(2*i0+1,2*i1+1,nz1)
-sxy1->GetVal(2*i0+1,2*i1,nz1))
+coeff1[2][0]*(0.25*((i0!=0)*(i1!=0)*sxz2->GetVal(i0,i1,0)
+(i1!=0)*sxz2->GetVal(i0+1,i1,0)
+(i0!=0)*sxz2->GetVal(i0,i1+1,0)
+sxz2->GetVal(i0+1,i1+1,0))
-2*sxz1->GetVal(2*i0+1,2*i1+1,nz1-1))));
}
//====== use Jacobi iteration method to solve for ghost sxz2 ======
#ifdef _SPFP
Jacobi2D(g_sxz2, A, B, nx2-1, ny2-1, std::min(1e-3,B.AvgAbs()*1e-4), g_tmp);
#endif
#ifdef _DPFP
Jacobi2D(g_sxz2, A, B, nx2-1, ny2-1, std::min(1e-12,B.AvgAbs()*1e-5), g_tmp);
#endif
//=================================================================
#ifdef _OPENMP
#pragma omp parallel default(shared)
#endif
{
//return ghost sxz2
#ifdef _OPENMP
#pragma omp for
#endif
for(int i1 = 1; i1 < ny2; i1++)
for(int i0 = 1; i0 < nx2; i0++)
sxz2->SetVal(i0,i1,-1) = g_sxz2.GetVal(i0,i1);
//return ghost sxz1
#ifdef _OPENMP
#pragma omp for
#endif
for(int i1 = 1; i1 < ny2; i1++)
for(int i0 = 1; i0 < nx2; i0++)
sxz1->SetVal(2*i0,2*i1,nz1) = - sxz1->GetVal(2*i0,2*i1,nz1-1)
+ sxz2->GetVal(i0,i1,-1) + sxz2->GetVal(i0,i1,0);
#ifdef _OPENMP
#pragma omp for
#endif
for(int i1 = 1; i1 < ny2; i1++)
for(int i0 = 0; i0 < nx2; i0++)
sxz1->SetVal(2*i0+1,2*i1,nz1) = - sxz1->GetVal(2*i0+1,2*i1,nz1-1)
+ 0.5*((i0!=0)*(sxz2->GetVal(i0,i1,-1)
+ sxz2->GetVal(i0,i1,0))
+ (i0!=nx2-1)*(sxz2->GetVal(i0+1,i1,-1)
+ sxz2->GetVal(i0+1,i1,0)));
#ifdef _OPENMP
#pragma omp for
#endif
for(int i1 = 0; i1 < ny2; i1++)
for(int i0 = 1; i0 < nx2; i0++)
sxz1->SetVal(2*i0,2*i1+1,nz1) = -sxz1->GetVal(2*i0,2*i1+1,nz1-1)
+ 0.5*((i1!=0)*(sxz2->GetVal(i0,i1,-1)
+ sxz2->GetVal(i0,i1,0))
+ (i1!=ny2-1)*(sxz2->GetVal(i0,i1+1,-1)
+ sxz2->GetVal(i0,i1+1,0)));
#ifdef _OPENMP
#pragma omp for
#endif
for(int i1 = 0; i1 < ny2; i1++)
for(int i0 = 0; i0 < nx2; i0++)
sxz1->SetVal(2*i0+1,2*i1+1,nz1) = -sxz1->GetVal(2*i0+1,2*i1+1,nz1-1)
+ 0.25*((i1!=0)*((i0!=0)*(sxz2->GetVal(i0,i1,-1)
+ sxz2->GetVal(i0,i1,0))
+ (i0!=nx2-1)*(sxz2->GetVal(i0+1,i1,-1)
+ sxz2->GetVal(i0+1,i1,0)))
+ (i1!=ny2-1)*((i0!=0)*(sxz2->GetVal(i0,i1+1,-1)
+ sxz2->GetVal(i0,i1+1,0))
+ (i0!=nx2-1)*(sxz2->GetVal(i0+1,i1+1,-1)
+ sxz2->GetVal(i0+1,i1+1,0))));
}
}
}
/* Perform jacobi iteration method on A(*)X = B and solve for X (EQ(58) in ESG paper)
* Input:
* X,X_tmp[0:n1+1][0:n0+1]
* A[9][0:n1-1][0:n0-1]
* B[0:n1-1][0:n0-1]
* Output:
* X[0:n1+1][0:n0+1]
*/
void Jacobi2D(Array &X, Array &A, Array &B, int n0, int n1, real tol, Array &X_tmp)
{
//TODO delete
//real res=0;
do{
#ifdef _OPENMP
#pragma omp parallel default(shared)
#endif
{
#ifdef _OPENMP
#pragma omp for
#endif
for(int i1=1; i1<=n1; i1++)
for(int i0=1; i0<=n0; i0++)
X_tmp.SetVal(i0,i1) = X.SetVal(i0,i1);
#ifdef _OPENMP
#pragma omp for
#endif
for(int i1=1; i1<=n1; i1++)
for(int i0=1; i0<=n0; i0++)
X.SetVal(i0,i1) = (B.GetVal(i0-1,i1-1)
- A.GetVal(i0-1,i1-1,0)*X_tmp.GetVal(i0-1,i1-1)
- A.GetVal(i0-1,i1-1,1)*X_tmp.GetVal(i0-1,i1)
- A.GetVal(i0-1,i1-1,2)*X_tmp.GetVal(i0-1,i1+1)
- A.GetVal(i0-1,i1-1,3)*X_tmp.GetVal(i0,i1-1)
- A.GetVal(i0-1,i1-1,5)*X_tmp.GetVal(i0,i1+1)
- A.GetVal(i0-1,i1-1,6)*X_tmp.GetVal(i0+1,i1-1)
- A.GetVal(i0-1,i1-1,7)*X_tmp.GetVal(i0+1,i1)
- A.GetVal(i0-1,i1-1,8)*X_tmp.GetVal(i0+1,i1+1))/A.GetVal(i0-1,i1-1,4);
}
// res = Norm2D(X,X_tmp,n0,n1,2);
// std::cerr<< "---->res=" << res << std::endl;
// std::cerr<< "---->tol=" << tol << std::endl;
}while(Norm2D(X,X_tmp,n0,n1,2)>tol);
}
/* compute relative difference between two matrices
* X1,X2[0:n1-1][0:n0-1]
* return: ||x1 - x2||
* mode: [0]: infinity norm, [2]: two norm
*/
real Norm2D(Array &X1, Array &X2, int n0, int n1, int mode)
{
assert(mode==0 || mode==2);
real res = 0;
if(mode==2)
{
#ifdef _OPENMP
#pragma omp parallel for default(shared) reduction(+:res)
#endif
for(int i1 = 1; i1 <= n1; i1++)
for(int i0 = 1; i0 <= n0; i0++)
{
res += (X1.GetVal(i0,i1) - X2.GetVal(i0,i1))*(X1.GetVal(i0,i1) - X2.GetVal(i0,i1));
}
res = sqrt(res);
}
else
{
#ifdef _OPENMP
#pragma omp parallel for default(shared) reduction(+:res)
#endif
for(int i1 = 1; i1 <= n1; i1++)
for(int i0 = 1; i0 <= n0; i0++)
{
res = std::max(res, static_cast<real>(fabs(X1.GetVal(i0,i1) - X2.GetVal(i0,i1))));
}
}
return res;
}