-
Notifications
You must be signed in to change notification settings - Fork 1
/
Copy pathcorrect_grids_print.f90
428 lines (327 loc) · 12.5 KB
/
correct_grids_print.f90
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
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
program lowresmodel
implicit none
!variable declaration
integer, parameter :: Lx = 6000, Ly = 2000 !domain in km
integer, parameter :: Dx = 125, Dxm = Dx*1000 !grid resolution
real, parameter :: dT = 100 !time step, 100 seconds
integer, parameter :: ntime = 86400 !time step as an integer because otherwise the do loop gets mad
integer :: nstep
integer, parameter :: Nx = (Lx/Dx) + 3, Ny = (Ly/Dx) + 3 !create grid points for array
integer :: i, j, t, n, irec !define other potentially important variables
real :: time !TIME
real, dimension(Nx, Ny) :: h, u, v, q, hsurf, lq, zeta, ght, ken, pen !array creation with internal variables for each point
real, dimension(Nx, Ny, 3) :: hu0, hv0, hq0, us0, vs0, h0 ! Variables for time differencing
real, dimension(Nx, Ny) :: hu1, hu2, hu3, hv1, hv2, hv3, us1, us2, us3, vs1, vs2, vs3, hu, hv, us, vs
real, dimension(Nx, Ny, 3) :: alp0, bet0, gam0, del0, eps0, ken0, ght0, q0, z0, phi0, totalen0
real, dimension(Nx, Ny, 3) :: u0, v0
!Variables for further time-stepping
real, dimension(Nx, Ny) :: alp1, alp2, alp3, bet1, bet2, bet3
real, dimension(Nx, Ny) :: gam1, gam2, gam3, del1, del2, del3
real, dimension(Nx, Ny) :: eps1, eps2, eps3, ken1, ken2, ken3
real, dimension(Nx, Ny) :: ght1, ght2, ght3, phi1, phi2, phi3, totalen1, totalen2, totalen3
real, parameter :: g = 9.81, f = 1.0e-4, f1 = (23.0/12.0), f2 = (4.0/3.0), f3 = (5.0/12.0) !Constants
!showcase model info
print *, "Grid Type: C"
print *, "Domain (km):", Lx, Ly
print *, "Grid Resolution (km):", Dx
print *, "X-Direction Grid Point #:", Nx
print *, "Y-Direction Grid Point #:", Ny
call initgrid(hsurf, Dx, Nx, Ny)
! Set initial conditions
u(:,:) = 0.0
u(1:Nx,2:Ny-1) = 20 ! uniform zonal wind
v(:,:) = 0.0
v(1:Nx,2:Ny-1) = 0.1
u0(:,:,1) = u(:,:)
v0(:,:,1) = v(:,:)
h(:,:) = 0.0
do i = 1,Nx
h(i,2:Ny-1) = 5000-hsurf(i, 2:Ny-1) ! horizontal free surface
end do
h0(:,:,1) = h(:,:)
hu0(:,:,1) = 0.0
hv0(:,:,1) = 0.0
us0(:,:,1) = 0.0
vs0(:,:,1) = 0.0
z0(:,:,1) = 0.0
hq0(:,:,1) = 0.0
ght0(:,:,1) = 0.0
ken0(:,:,1) = 0.0
q0(:,:,1) = 0.0
totalen0(:,:,1) = 0.0
alp0(:,:,1) = 0.0
bet0(:,:,1) = 0.0
gam0(:,:,1) = 0.0
del0(:,:,1) = 0.0
eps0(:,:,1) = 0.0
phi0(:,:,1) = 0.0
do i = 2, Nx-1
do j = 2, Ny-1
hu0(i,j,1) = (h(i-1,j) + h(i+1,j))/2.0
hv0(i,j,1) = (h(i,j-1) + h(i,j+1))/2.0
z0(i,j,1)=(u(i,j-1)-u(i,j+1)+v(i+1,j)-v(i-1,j))/Dxm
hq0(i,j,1)=(h(i,j) + h(i-1,j) + h(i-1,j-1) + h(i,j-1))/4.0
ght0(i,j,1) = g*(hsurf(i,j) + h(i,j))
ken0(i,j,1)=(u(i,j)**2 + u(i+1,j)**2 + v(i,j)**2 + v(i,j+1)**2)/4.
end do
end do
us0(2:Nx-1,2:Ny-1,1)= hu0(2:Nx-1,2:Ny-1,1)*u(2:Nx-1,2:Ny-1)
vs0(2:Nx-1,2:Ny-1,1)= hv0(2:Nx-1,2:Ny-1,1)*v(2:Nx-1,2:Ny-1)
us0(1,:,1) = us0(Nx-1,:,1)
us0(Nx,:,1) = us0(2,:,1)
vs0(1,:,1) = vs0(Nx-1,:,1)
vs0(Nx,:,1) = vs0(2,:,1)
u(1,:) = u(Nx-1,:)
u(Nx,:) = u(2,:)
v(1,:) = v(Nx-1,:)
v(Nx,:) = v(2,:)
hu0(1,:,1) = hu0(Nx-1,:,1)
hu0(Nx,:,1) = hu0(2,:,1)
hv0(1,:,1) = hv0(Nx-1,:,1)
hv0(Nx,:,1) = hv0(2,:,1)
z0(1,:,1) = z0(Nx-1,:,1)
z0(Nx,:,1) = z0(2,:,1)
hq0(1,:,1) = hq0(Nx-1,:,1)
hq0(Nx,:,1) = hq0(2,:,1)
ght0(1,:,1) = ght0(Nx-1,:,1)
ght0(Nx,:,1) = ght0(2,:,1)
ken0(1,:,1) = ken0(Nx-1,:,1)
ken0(Nx,:,1) = ken0(2,:,1)
totalen0(:,:,1) = ken0(:,:,1) + ght0(:,:,1)
! We can print out the initial conditions
! Time-stepping loop
do n = 2, 3
do i = 2, Nx-1
do j = 2, Ny-1
h0(i,j,n) = h0(i,j,n-1) - dT * (us0(i+1,j,n-1) - us0(i,j,n-1) + vs0(i,j+1,n-1) - vs0(i,j,n-1))/Dxm
! Calculate u
u0(i,j,n) = u0(i,j,n-1) + dT * (alp0(i,j,n-1) * vs0(i,j+1,n-1) + bet0(i,j,n-1) * vs0(i-1,j+1,n-1) + &
gam0(i,j,n-1) * vs0(i-1,j,n-1) + del0(i,j,n-1) * vs0(i,j,n-1) - eps0(i,j,n-1) * &
us0(i+1,j,n-1) + eps0(i-1,j,n-1) * us0(i-1,j,n-1) - (ken0(i,j,n-1) - &
ght0(i,j,n-1) + ken0(i,j,n-1) + ght0(i,j,n-1)) / Dxm)
! Calculate v
v0(i,j,n) = v0(i,j,n-1) - dT * (gam0(i+1,j,n-1) * us0(i+1,j,n-1) + del0(i,j,n-1) * us0(i,j,n-1) + &
alp0(i,j-1, n-1) * us0(i,j-1,n-1) + bet0(i+1,j-1,n-1) * us0(i+1,j-1,n-1) + phi0(i,j,n-1) * &
vs0(i,j+1,n-1) - phi0(i,j-1,n-1) * vs0(i,j-1,n-1) - (ken0(i,j,n-1) + &
ght0(i,j,n-1) - ken0(i,j-1,n-1) - ght0(i,j-1,n-1)) / Dxm)
! Calculate zeta (z0)
z0(i,j,n) = (u0(i,j-1,n) - u0(i,j,n) + v0(i,j,n) - v0(i-1,j,n)) / Dxm
end do
end do
h0(1,:,n) = h0(Nx-1,:,n)
h0(Nx,:,n) = h0(2,:,n)
u0(1,:,n) = u0(Nx-1,:,n)
u0(Nx,:,n) = u0(2,:,n)
v0(1,:,n) = v0(Nx-1,:,n)
v0(Nx,:,n) = v0(2,:,n)
z0(1,:,n) = z0(Nx-1,:,n)
z0(Nx,:,n) = z0(2,:,n)
do i = 2, Nx-1
do j = 2, Ny-1
! hu0, hv0, and hq0
hu0(i,j,n) = (h0(i-1,j,n) + h0(i+1,j,n)) / 2.0
hv0(i,j,n) = (h0(i,j-1,n) + h0(i,j+1,n)) / 2.0
hq0(i,j,n)=(h0(i,j,n) + h0(i-1,j,n) + h0(i-1,j-1,n) + h0(i,j-1,n)) / 4.0
! Calculate Potential Vorticity
q0(i,j,n) = (f + z0(i,j,n)) / hq0(i,j,n)
! Update everything else
ght0(i,j,n) = g*(hsurf(i,j) + h0(i,j,n))
ken0(i,j,n)=(u0(i,j,n)**2 + u0(i+1,j,n)**2 + v0(i,j,n)**2 + v0(i,j+1,n)**2)/4.
end do
end do
hu0(1,:,n) = hu0(Nx-1,:,n)
hu0(Nx,:,n) = hu0(2,:,n)
hv0(1,:,n) = hv0(Nx-1,:,n)
hv0(Nx,:,n) = hv0(2,:,n)
hq0(1,:,n) = hq0(Nx-1,:,n)
hq0(Nx,:,n) = hq0(2,:,n)
ght0(1,:,n) = ght0(Nx-1,:,n)
ght0(Nx,:,n) = ght0(2,:,n)
q0(1,:,n) = q0(Nx-1,:,n)
q0(Nx,:,n) = q0(2,:,n)
do i = 2, Nx-1
do j = 2, Ny-1
! Compute Greek letters
alp0(i, j, n) = ((1.0/24.0)*(2*q0(i+1,j+1,n) + q0(i,j+1,n) + 2*q0(i,j,n) + q0(i+1,j,n)))
bet0(i, j, n) = ((1.0/24.0)*(q0(i,j+1,n) + 2*q0(i-1,j+1,n) + q0(i-1,j,n) + 2*q0(i,j,n)))
gam0(i, j, n) = ((1.0/24.0)*(2*q0(i,j+1,n) + q0(i-1,j+1,n) + 2*q0(i-1,j,n) + q0(i,j,n)))
del0(i, j, n) = ((1.0/24.0)*(q0(i+1,j+1,n) + 2*q0(i,j+1,n) + q0(i,j,n) + 2*q0(i+1,j,n)))
eps0(i, j, n) = ((1.0/24.0)*(q0(i+1,j+1,n) + q0(i,j+1,n) - q0(i,j,n) - q0(i+1,j,n)))
phi0(i, j, n) = ((1.0/24.0)*(-q0(i+1,j+1,n) + q0(i,j+1,n) + q0(i,j,n) - q0(i+1,j,n)))
end do
end do
totalen0(:,:,n) = ken0(:,:,n) + ght0(:,:,n)
us0(2:Nx-1,2:Ny-1,n)= hu0(2:Nx-1,2:Ny-1,n)*u0(2:Nx-1,2:Ny-1,n)
vs0(2:Nx-1,2:Ny-1,n)= hv0(2:Nx-1,2:Ny-1,n)*v0(2:Nx-1,2:Ny-1,n)
us0(1,:,n) = us0(Nx-1,:,n)
us0(Nx,:,n) = us0(2,:,n)
vs0(1,:,n) = vs0(Nx-1,:,n)
vs0(Nx,:,n) = vs0(2,:,n)
alp0(1,:,n) = alp0(Nx-1,:,n)
alp0(Nx,:,n) = alp0(2,:,n)
bet0(1,:,n) = bet0(Nx-1,:,n)
bet0(Nx,:,n) = bet0(2,:,n)
gam0(1,:,n) = gam0(Nx-1,:,n)
gam0(Nx,:,n) = gam0(2,:,n)
del0(1,:,n) = del0(Nx-1,:,n)
del0(Nx,:,n) = del0(2,:,n)
eps0(1,:,n) = eps0(Nx-1,:,n)
eps0(Nx,:,n) = eps0(2,:,n)
phi0(1,:,n) = phi0(Nx-1,:,n)
phi0(Nx,:,n) = phi0(2,:,n)
end do ! time loop
!Update previous values prior to next time step
us1(:,:) = us0(:,:,1)
us2(:,:) = us0(:,:,2)
us3(:,:) = us0(:,:,3)
hu1(:,:) = h0(:,:,1)
hu2(:,:) = h0(:,:,2)
hu3(:,:) = h0(:,:,3)
vs1(:,:) = vs0(:,:,1)
vs2(:,:) = vs0(:,:,2)
vs3(:,:) = vs0(:,:,3)
hv1(:,:) = hv0(:,:,1)
hv2(:,:)= hv0(:,:,2)
hv3(:,:) = hv0(:,:,3)
alp1(:,:) = alp0(:,:,1)
alp2(:,:) = alp0(:,:,2)
alp3(:,:)= alp0(:,:,3)
bet1(:,:) = bet0(:,:,1)
bet2(:,:) = bet0(:,:,2)
bet3(:,:)= bet0(:,:,3)
gam1(:,:) = gam0(:,:,1)
gam2(:,:) = gam0(:,:,2)
gam3(:,:)= gam0(:,:,3)
del1(:,:) = del0(:,:,1)
del2(:,:) = del0(:,:,2)
del3(:,:)= del0(:,:,3)
eps1(:,:) = eps0(:,:,1)
eps2(:,:) = eps0(:,:,2)
eps3(:,:)= eps0(:,:,3)
ken1(:,:) = ken0(:,:,1)
ken2(:,:) = ken0(:,:,2)
ken3(:,:)= ken0(:,:,3)
ght1(:,:) = ght0(:,:,1)
ght2(:,:) = ght0(:,:,2)
ght3(:,:)= ght0(:,:,3)
! Adams-Bashforth scheme
!Open files for printing
open(unit=30, file='h.dat', access='direct', form='unformatted', status='unknown', action='write', recl=4*(Nx-2)*(Ny-2))
open(unit=35, file='u.dat', access='direct', form='unformatted', status='unknown', action='write', recl=4*(Nx-2)*(Ny-2))
open(unit=40, file='v.dat', access='direct', form='unformatted', status='unknown', action='write', recl=4*(Nx-2)*(Ny-2))
nstep = 4
do n = 4, ntime
nstep = nstep + 1
do i = 2, Nx-1
do j = 2, Ny-1
h(i,j) = h(i,j) - f1*(us3(i+1,j+1) - us3(i,j+1) + vs3(i+1,j+1) - vs3(i+1,j)) + &
f2*(us2(i+1,j+1) - us2(i,j+1) + vs2(i+1,j+1) - vs2(i+1,j)) - &
f3*(us1(i+1,j+1) - us1(i,j+1) + vs1(i+1,j+1) - vs1(i+1,j))
u(i,j) = u(i,j) + f1 * (alp3(i,j) * vs3(i,j+1) + bet3(i,j) * vs3(i-1,j+1) + gam3(i,j) * vs3(i-1,j) + &
del3(i,j) * vs3(i,j) - eps3(i,j) * us3(i+1,j) + eps3(i-1,j) * us3(i-1,j) - (ken3(i,j) - &
ght3(i,j) + ken3(i,j) + ght3(i,j)) / Dxm) - &
f2 * (alp2(i,j) * vs2(i,j+1) + bet2(i,j) * vs2(i-1,j+1) + gam2(i,j) * vs2(i-1,j) + &
del2(i,j) * vs2(i,j) - eps2(i,j) * us2(i+1,j) + eps2(i-1,j) * us2(i-1,j) - (ken2(i,j) - &
ght2(i,j) + ken2(i,j) + ght2(i,j)) / Dxm) + &
f3 * (alp1(i,j) * vs1(i,j+1) + bet1(i,j) * vs1(i-1,j+1) + gam1(i,j) * vs1(i-1,j) + &
del1(i,j) * vs1(i,j) - eps1(i,j) * us1(i+1,j) + eps1(i-1,j) * us1(i-1,j) - (ken1(i,j) - &
ght1(i,j) + ken1(i,j) + ght1(i,j)) / Dxm)
v(i,j) = f1 * (gam3(i+1,j) * us3(i+1,j) + del3(i,j) * us3(i,j) + alp3(i,j-1) * us3(i,j-1) + &
bet3(i+1,j-1) * us3(i+1,j-1) + phi3(i,j) * vs3(i,j+1) - phi3(i,j-1) * vs3(i,j-1) - &
(ken3(i,j) + ght3(i,j) - ken3(i,j-1) - ght3(i,j-1)) / Dxm) - &
f2 * (gam2(i+1,j) * us2(i+1,j) + del2(i,j) * us2(i,j) + alp2(i,j-1) * us2(i,j-1) + &
bet2(i+1,j-1) * us2(i+1,j-1) + phi2(i,j) * vs2(i,j+1) - phi2(i,j-1) * vs2(i,j-1) - &
(ken2(i,j) + ght2(i,j) - ken2(i,j-1) - ght2(i,j-1)) / Dxm) + &
f3 * (gam1(i+1,j) * us1(i+1,j) + del1(i,j) * us1(i,j) + alp1(i,j-1) * us1(i,j-1) + &
bet1(i+1,j-1) * us1(i+1,j-1) + phi1(i,j) * vs1(i,j+1) - phi1(i,j-1) * vs1(i,j-1) - &
(ken1(i,j) + ght1(i,j) - ken1(i,j-1) - ght3(i,j-1)) / Dxm)
end do
end do
us(2:Nx-1,2:Ny-1)= hu(2:Nx-1,2:Ny-1)*u(2:Nx-1,2:Ny-1)
vs(2:Nx-1,2:Ny-1)= hv(2:Nx-1,2:Ny-1)*v(2:Nx-1,2:Ny-1)
h(1,:) = h(Nx-1,:)
h(Nx,:) = h(2,:)
u(1,:) = u(Nx-1,:)
u(Nx,:) = u(2,:)
v(1,:) = v(Nx-1,:)
v(Nx,:) = v(2,:)
do i = 2, Nx-1
do j = 2, Ny-1
hu(i,j) = (h(i-1,j) + h(i+1,j))/2.0
hv(i,j) = (h(i,j-1) + h(i,j+1))/2.0
end do
end do
hu(1,:) = hu(Nx-1,:)
hu(Nx,:) = hu(2,:)
hv(1,:) = hv(Nx-1,:)
hv(Nx,:) = hv(2,:)
us(1,:) = us(Nx-1,:)
us(Nx,:) = us(2,:)
vs(1,:) = vs(Nx-1,:)
vs(Nx,:) = vs(2,:)
us1 = us2
us2 = us3
us3 = us
hu1 = hu2
hu2 = hu3
hu3 = hu
hv1 = hv2
hv2 = hv3
hv3 = hv
if (nstep==1440) then
write(30, rec=1) h(2:Nx-1,2:Ny-1)
write(35, rec=1) u(2:Nx-1,2:Ny-1)
write(40, rec=1) v(2:Nx-1,2:Ny-1)
nstep = 0
end if
end do
totalen1(:,:) = ken1(:,:) + ght1(:,:)
totalen2(:,:) = ken2(:,:) + ght2(:,:)
totalen3(:,:) = ken3(:,:) + ght3(:,:)
open(unit=45, file='totalen.dat', access='direct', form='unformatted', status='unknown', action='write', recl=4*(Nx-2)*(Ny-2))
irec=0
do n=1,3
irec=irec+1
write(45, rec=irec) totalen0(2:Nx-1,2:Ny-1,n)
end do
! We probably have to print something or write something here
! We probably have to print something or write something here
open(unit=10, file='hightopo.dat', access='direct', form='unformatted', status='unknown', action='write', recl=4*(Nx-2)*(Ny-2)) !scary thing
write(10, rec=1) hsurf(2:Nx-1,2:Ny-1)
open(unit=15, file='highgeopot.dat', access='direct', form='unformatted', status='unknown', action='write', recl=4*(Nx-2)*(Ny-2))
irec=0
do n=1,3
irec=irec+1
write(15, rec=irec) ght0(2:Nx-1,2:Ny-1,n)
end do
open(unit=20, file='highuwind.dat', access='direct', form='unformatted', status='unknown', action='write', recl=4*(Nx-2)*(Ny-2))
irec=0
do n=1,3
irec=irec+1
write(20, rec=irec) u0(2:Nx-1,2:Ny-1,n)
end do
open(unit=25, file='highvwind.dat', access='direct', form='unformatted', status='unknown', action='write', recl=4*(Nx-2)*(Ny-2))
irec=0
do n=1,3
irec=irec+1
write(25, rec=irec) v0(2:Nx-1,2:Ny-1,n)
end do
end program lowresmodel
subroutine initgrid(hsurf, Dx, Nx, Ny) !creates grid, ridge, and topography.
implicit none
integer, parameter :: Lx = 6000, Ly = 2000
integer, intent(in) :: Dx, Nx, Ny
real, dimension(Nx,Ny), intent(out) :: hsurf
integer :: i, j
hsurf(:,:)=0.0
!grid resolution thing (topography)
hsurf((Nx)/2 + 1,:) = 2000
if (Dx==250) then
hsurf((Nx)/2,:) = 1000
hsurf((Nx)/2 + 2,:) = 1000
endif
if (Dx==125) then
hsurf((Nx)/2 - 1,:) = 500
hsurf((Nx)/2 + 3,:) = 500
endif
end subroutine initgrid