-
Notifications
You must be signed in to change notification settings - Fork 0
/
weno.f90
264 lines (214 loc) · 12.6 KB
/
weno.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
module weno
use constant
use declaration
implicit none
contains
subroutine weno5(q_stencil, ul, ur)
!loop iters
integer(i8) :: k
!weno input and output variables
real(prec),dimension(-2:3,4), intent(in) :: q_stencil
real(prec), dimension(4), intent(out) :: ul, ur
!weno reconstruction variables
real(prec), dimension(4) :: g_0, g_1, g_2
real(prec), dimension(4) :: is0, is1, is2
real(prec), dimension(4) :: w0, w1, w2
real(prec), dimension(4) :: alpha1, alpha2, alpha3
!reconstruction for ul value
do k = 1,4
g_0(k) = sixth*(two*q_stencil(-2,k) - seven*q_stencil(-1, k) + eleven*q_stencil(0, k))
g_1(k) = sixth*(-q_stencil(-1,k) + five*q_stencil(0,k) + two*q_stencil(1,k))
g_2(k) = sixth*(two*q_stencil(0,k) + five*q_stencil(1,k) - q_stencil(2,k))
is0(k) = k_is*(q_stencil(-2,k) - two*q_stencil(-1,k) + q_stencil(0,k))**2 +&
& quarter*(q_stencil(-2,k) - four*q_stencil(-1,k) + three*q_stencil(0,k))**2
is1(k) = k_is*(q_stencil(-1,k) - two*q_stencil(0,k) + q_stencil(1,k))**2 +&
& quarter*(q_stencil(-1,k) - q_stencil(1,k))**2
is2(k) = k_is*(q_stencil(0,k) - two*q_stencil(1,k) + q_stencil(2,k))**2 +&
& quarter*(three*q_stencil(0,k) - four*q_stencil(1,k) + q_stencil(2,k))**2
alpha1(k) = c0_js/(is0(k) + e_weno)**2
alpha2(k) = c1_js/(is1(k) + e_weno)**2
alpha3(k) = c2_js/(is2(k) + e_weno)**2
w0(k) = alpha1(k)/(alpha1(k)+alpha2(k)+alpha3(k))
w1(k) = alpha2(k)/(alpha1(k)+alpha2(k)+alpha3(k))
w2(k) = alpha3(k)/(alpha1(k)+alpha2(k)+alpha3(k))
end do
ul = w0*g_0 + w1*g_1 + w2*g_2
!reconstruction for ur value
do k = 1,4
g_0(k) = sixth*(two*q_stencil(3,k) - seven*q_stencil(2, k) + eleven*q_stencil(1, k))
g_1(k) = sixth*(-q_stencil(2,k) + five*q_stencil(1,k) + two*q_stencil(0,k))
g_2(k) = sixth*(two*q_stencil(1,k) + five*q_stencil(0,k) - q_stencil(-1,k))
is0(k) = k_is*(q_stencil(3,k) - two*q_stencil(2,k) + q_stencil(1,k))**2 +&
& quarter*(q_stencil(3,k) - four*q_stencil(2,k) + three*q_stencil(1,k))**2
is1(k) = k_is*(q_stencil(2,k) - two*q_stencil(1,k) + q_stencil(0,k))**2 +&
& quarter*(q_stencil(2,k) - q_stencil(0,k))**2
is2(k) = k_is*(q_stencil(1,k) - two*q_stencil(0,k) + q_stencil(-1,k))**2 +&
& quarter*(three*q_stencil(1,k) - four*q_stencil(0,k) + q_stencil(-1,k))**2
alpha1(k) = c0_js/(is0(k) + e_weno)**2
alpha2(k) = c1_js/(is1(k) + e_weno)**2
alpha3(k) = c2_js/(is2(k) + e_weno)**2
w0(k) = alpha1(k)/(alpha1(k)+alpha2(k)+alpha3(k))
w1(k) = alpha2(k)/(alpha1(k)+alpha2(k)+alpha3(k))
w2(k) = alpha3(k)/(alpha1(k)+alpha2(k)+alpha3(k))
end do
ur = w0*g_0 + w1*g_1 + w2*g_2
end subroutine
subroutine wenozq(q_stencil, ul, ur)
implicit none
!loop iters
integer(i8) :: k
!weno input and output variables
real(prec),dimension(-2:3,4), intent(in) :: q_stencil
real(prec), dimension(4), intent(out) :: ul, ur
!weno reconstruction variables
real(prec), dimension(4) :: g_0, g_1, g_2
real(prec), dimension(4) :: is0, is1, is2
real(prec), dimension(4) :: w0, w1, w2
real(prec), dimension(4) :: alpha1, alpha2, alpha3
real(prec), dimension(4) :: tau
real(prec) :: a1, a2, a3, a4
do k = 1,4
a1 = -82*(q_stencil(-1, k) - q_stencil(1, k)) + 11*(q_stencil(-2, k) - q_stencil(2, k))
a2 = 40*(q_stencil(-1, k) + q_stencil(1, k)) - three*(q_stencil(-2, k) + q_stencil(2, k)) - 74*q_stencil(0,k)
a3 = two*(q_stencil(-1,k) - q_stencil(1,k)) - q_stencil(-2,k) + q_stencil(2, k)
a4 = -four*(q_stencil(-1,k) + q_stencil(1, k)) + six*q_stencil(0, k) + q_stencil(-2, k) + q_stencil(2, k)
g_0(k) = q_stencil(0, k) + (a1/120)*half + (a2/56)*(one/six) + (a3/12)*(one/20) + (a4/24)*(one/70)
g_1(k) = q_stencil(0, k) + (q_stencil(0, k) - q_stencil(-1, k))*half
g_2(k) = q_stencil(0, k) + (q_stencil(1, k) - q_stencil(0, k))*half
is0(k) = (a1 + a3)*(a1 + a3)/14400 + (13/3)*(a2/56 + (123/455)*(a4/24))**2 + (781/20)*(a3/12)**2 + (1421461/2275)*(a4/24)**2
is1(k) = (q_stencil(-1, k) - q_stencil(0, k))**2
is2(k) = (q_stencil(0, k) - q_stencil(1, k))**2
tau(k) = quarter*(abs(is0(k) - is1(k)) + abs(is0(k) - is2(k)))**2
alpha1(k) = c0*(one + tau(k)/(is0(k) + e_weno))
alpha2(k) = c1*(one + tau(k)/(is1(k) + e_weno))
alpha3(k) = c2*(one + tau(k)/(is2(k) + e_weno))
w0(k) = alpha1(k)/(alpha1(k)+alpha2(k)+alpha3(k))
w1(k) = alpha2(k)/(alpha1(k)+alpha2(k)+alpha3(k))
w2(k) = alpha3(k)/(alpha1(k)+alpha2(k)+alpha3(k))
end do
ul = w0*((one/c0)*g_0 - (c1/c0)*g_1 - (c2/c0)*g_2) + w1*g_1 + w2*g_2
do k = 1,4
a1 = -82*(q_stencil(0, k) - q_stencil(2, k)) + 11*(q_stencil(-1, k) - q_stencil(3, k))
a2 = 40*(q_stencil(0, k) + q_stencil(2, k)) - three*(q_stencil(-1, k) + q_stencil(3, k)) - 74*q_stencil(1,k)
a3 = two*(q_stencil(0,k) - q_stencil(2,k)) - q_stencil(-1,k) + q_stencil(2, k)
a4 = -four*(q_stencil(0,k) + q_stencil(2, k)) + six*q_stencil(1, k) + q_stencil(-1, k) + q_stencil(3, k)
g_0(k) = q_stencil(1, k) - (a1/120)*half + (a2/56)*(one/six) - (a3/12)*(one/20) + (a4/24)*(one/70)
g_1(k) = q_stencil(1, k) - (q_stencil(1, k) - q_stencil(0, k))*half
g_2(k) = q_stencil(1, k) - (q_stencil(2, k) - q_stencil(1, k))*half
is0(k) = (a1 + a3)*(a1 + a3)/14400 + (13/3)*(a2/56 + (123/455)*(a4/24))**2 + (781/20)*(a3/12)**2 + (1421461/2275)*(a4/24)**2
is1(k) = (q_stencil(0, k) - q_stencil(1, k))**2
is2(k) = (q_stencil(1, k) - q_stencil(2, k))**2
tau(k) = quarter*(abs(is0(k) - is1(k)) + abs(is0(k) - is2(k)))**2
alpha1(k) = c0*(one + tau(k)/(is0(k) + e_weno))
alpha2(k) = c1*(one + tau(k)/(is1(k) + e_weno))
alpha3(k) = c2*(one + tau(k)/(is2(k) + e_weno))
w0(k) = alpha1(k)/(alpha1(k)+alpha2(k)+alpha3(k))
w1(k) = alpha2(k)/(alpha1(k)+alpha2(k)+alpha3(k))
w2(k) = alpha3(k)/(alpha1(k)+alpha2(k)+alpha3(k))
end do
ur = w0*((one/c0)*g_0 - (c1/c0)*g_1 - (c2/c0)*g_2) + w1*g_1 + w2*g_2
end subroutine wenozq
subroutine wenozq_gen(q_stencil, ul, ur, xdist1, xdist2)
implicit none
!loop iters
integer(i8) :: k
!weno input and output variables
real(prec),dimension(-2:3,4), intent(in) :: q_stencil
real(prec), INTENT(IN) :: xdist1, xdist2
real(prec), dimension(4), intent(out) :: ul, ur
!weno reconstruction variables
real(prec), dimension(4) :: g_0, g_1, g_2
real(prec), dimension(4) :: is0, is1, is2
real(prec), dimension(4) :: w0, w1, w2
real(prec), dimension(4) :: alpha1, alpha2, alpha3
real(prec), dimension(4) :: tau
real(prec) :: a1, a2, a3, a4
do k = 1,4
a1 = -82.0d0*(q_stencil(-1, k) - q_stencil(1, k)) + 11.0d0*(q_stencil(-2, k) - q_stencil(2, k))
a2 = 40.0d0*(q_stencil(-1, k) + q_stencil(1, k)) - three*(q_stencil(-2, k) + q_stencil(2, k)) - 74.0d0*q_stencil(0,k)
a3 = two*(q_stencil(-1,k) - q_stencil(1,k)) - q_stencil(-2,k) + q_stencil(2, k)
a4 = -four*(q_stencil(-1,k) + q_stencil(1, k)) + six*q_stencil(0, k) + q_stencil(-2, k) + q_stencil(2, k)
g_0(k) = q_stencil(0, k) + (a1/120.0d0)*xdist1 + (a2/56.0d0)*(xdist1*xdist1 - a21) + &
(a3/12.0d0)*(xdist1**3 - a31*(xdist1)) + (a4/24.0d0)*(xdist1**4 - a41*xdist1**2 + a42)
g_1(k) = q_stencil(0, k) + (q_stencil(0, k) - q_stencil(-1, k))*xdist1
g_2(k) = q_stencil(0, k) + (q_stencil(1, k) - q_stencil(0, k))*xdist1
is0(k) = (a1 + a3)*(a1 + a3)/14400.0d0 + (13.0d0/3.0d0)*(a2/56.0d0 + (123.0d0/455.0d0)*(a4/24.0d0))**2 + &
(781.0d0/20.0d0)*(a3/12.0d0)**2 + (1421461.0d0/2275.0d0)*(a4/24.0d0)**2
is1(k) = (q_stencil(-1, k) - q_stencil(0, k))**2
is2(k) = (q_stencil(0, k) - q_stencil(1, k))**2
tau(k) = quarter*(abs(is0(k) - is1(k)) + abs(is0(k) - is2(k)))**2
alpha1(k) = c0*(one + tau(k)/(is0(k) + e_weno))
alpha2(k) = c1*(one + tau(k)/(is1(k) + e_weno))
alpha3(k) = c2*(one + tau(k)/(is2(k) + e_weno))
w0(k) = alpha1(k)/(alpha1(k)+alpha2(k)+alpha3(k))
w1(k) = alpha2(k)/(alpha1(k)+alpha2(k)+alpha3(k))
w2(k) = alpha3(k)/(alpha1(k)+alpha2(k)+alpha3(k))
end do
ul = w0*((one/c0)*g_0 - (c1/c0)*g_1 - (c2/c0)*g_2) + w1*g_1 + w2*g_2
do k = 1,4
a1 = -82.0d0*(q_stencil(0, k) - q_stencil(2, k)) + 11.0d0*(q_stencil(-1, k) - q_stencil(3, k))
a2 = 40.0d0*(q_stencil(0, k) + q_stencil(2, k)) - three*(q_stencil(-1, k) + q_stencil(3, k)) - 74.0d0*q_stencil(1,k)
a3 = two*(q_stencil(0,k) - q_stencil(2,k)) - q_stencil(-1,k) + q_stencil(2, k)
a4 = -four*(q_stencil(0,k) + q_stencil(2, k)) + six*q_stencil(1, k) + q_stencil(-1, k) + q_stencil(3, k)
g_0(k) = q_stencil(1, k) + (a1/120.0d0)*xdist2 + (a2/56.0d0)*(xdist2*xdist2 - a21) + &
(a3/12.0d0)*(xdist2**3 - a31*(xdist2)) + (a4/24.0d0)*(xdist2**4 - a41*xdist2**2 + a42)
g_1(k) = q_stencil(1, k) + (q_stencil(1, k) - q_stencil(0, k))*xdist2
g_2(k) = q_stencil(1, k) + (q_stencil(2, k) - q_stencil(1, k))*xdist2
is0(k) = (a1 + a3)*(a1 + a3)/14400.0d0 + (13.0d0/3.0d0)*(a2/56.0d0 + (123.0d0/455.0d0)*(a4/24.0d0))**2 + &
(781.0d0/20.0d0)*(a3/12.0d0)**2 + (1421461.0d0/2275.0d0)*(a4/24.0d0)**2
is1(k) = (q_stencil(0, k) - q_stencil(1, k))**2
is2(k) = (q_stencil(1, k) - q_stencil(2, k))**2
tau(k) = quarter*(abs(is0(k) - is1(k)) + abs(is0(k) - is2(k)))**2
alpha1(k) = c0*(one + tau(k)/(is0(k) + e_weno))
alpha2(k) = c1*(one + tau(k)/(is1(k) + e_weno))
alpha3(k) = c2*(one + tau(k)/(is2(k) + e_weno))
w0(k) = alpha1(k)/(alpha1(k)+alpha2(k)+alpha3(k))
w1(k) = alpha2(k)/(alpha1(k)+alpha2(k)+alpha3(k))
w2(k) = alpha3(k)/(alpha1(k)+alpha2(k)+alpha3(k))
end do
ur = w0*((one/c0)*g_0 - (c1/c0)*g_1 - (c2/c0)*g_2) + w1*g_1 + w2*g_2
end subroutine wenozq_gen
subroutine wenozq_gaussl(q_stencil, ul, ur, xdist1, xdist2)
implicit none
!loop iters
integer(i8) :: k
!weno input and output variables
real(prec),dimension(-2:2,4), intent(in) :: q_stencil
real(prec), INTENT(IN) :: xdist1, xdist2
real(prec), dimension(4), intent(out) :: ul, ur
!weno reconstruction variables
real(prec), dimension(4) :: g_0, g_1, g_2
real(prec), dimension(4) :: is0, is1, is2
real(prec), dimension(4) :: w0, w1, w2
real(prec), dimension(4) :: alpha1, alpha2, alpha3
real(prec), dimension(4) :: tau
real(prec) :: a1, a2, a3, a4
do k = 1,4
a1 = -82.0d0*(q_stencil(-1, k) - q_stencil(1, k)) + 11.0d0*(q_stencil(-2, k) - q_stencil(2, k))
a2 = 40.0d0*(q_stencil(-1, k) + q_stencil(1, k)) - three*(q_stencil(-2, k) + q_stencil(2, k)) - 74.0d0*q_stencil(0,k)
a3 = two*(q_stencil(-1,k) - q_stencil(1,k)) - q_stencil(-2,k) + q_stencil(2, k)
a4 = -four*(q_stencil(-1,k) + q_stencil(1, k)) + six*q_stencil(0, k) + q_stencil(-2, k) + q_stencil(2, k)
g_0(k) = q_stencil(0, k) + (a1/120.0d0)*xdist1 + (a2/56.0d0)*(xdist1*xdist1 - a21) + &
(a3/12.0d0)*(xdist1**3 - a31*(xdist1)) + (a4/24.0d0)*(xdist1**4 - a41*xdist1**2 + a42)
g_1(k) = q_stencil(0, k) + (q_stencil(0, k) - q_stencil(-1, k))*xdist1
g_2(k) = q_stencil(0, k) + (q_stencil(1, k) - q_stencil(0, k))*xdist1
is0(k) = (a1 + a3)*(a1 + a3)/14400.0d0 + (13.0d0/3.0d0)*(a2/56.0d0 + (123.0d0/455.0d0)*(a4/24.0d0))**2 + &
(781.0d0/20.0d0)*(a3/12.0d0)**2 + (1421461.0d0/2275.0d0)*(a4/24.0d0)**2
is1(k) = (q_stencil(-1, k) - q_stencil(0, k))**2
is2(k) = (q_stencil(0, k) - q_stencil(1, k))**2
tau(k) = quarter*(abs(is0(k) - is1(k)) + abs(is0(k) - is2(k)))**2
alpha1(k) = c0*(one + tau(k)/(is0(k) + e_weno))
alpha2(k) = c1*(one + tau(k)/(is1(k) + e_weno))
alpha3(k) = c2*(one + tau(k)/(is2(k) + e_weno))
w0(k) = alpha1(k)/(alpha1(k)+alpha2(k)+alpha3(k))
w1(k) = alpha2(k)/(alpha1(k)+alpha2(k)+alpha3(k))
w2(k) = alpha3(k)/(alpha1(k)+alpha2(k)+alpha3(k))
ul(k) = w0(k)*((one/c0)*g_0(k) - (c1/c0)*g_1(k) - (c2/c0)*g_2(k)) + w1(k)*g_1(k) + w2(k)*g_2(k)
g_0(k) = q_stencil(0, k) + (a1/120.0d0)*xdist2 + (a2/56.0d0)*(xdist2*xdist2 - a21) + &
(a3/12.0d0)*(xdist2**3 - a31*(xdist2)) + (a4/24.0d0)*(xdist2**4 - a41*xdist2**2 + a42)
g_1(k) = q_stencil(0, k) + (q_stencil(0, k) - q_stencil(-1, k))*xdist2
g_2(k) = q_stencil(0, k) + (q_stencil(1, k) - q_stencil(0, k))*xdist2
ur(k) = w0(k)*((one/c0)*g_0(k) - (c1/c0)*g_1(k) - (c2/c0)*g_2(k)) + w1(k)*g_1(k) + w2(k)*g_2(k)
end do
end subroutine wenozq_gaussl
end module