質問編集履歴
1
一部だけだったのをソースコード全体にしました。
title
CHANGED
|
File without changes
|
body
CHANGED
|
@@ -8,11 +8,126 @@
|
|
|
8
8
|
```
|
|
9
9
|
|
|
10
10
|
###
|
|
11
|
-
|
|
11
|
+
program main
|
|
12
12
|
implicit none
|
|
13
13
|
integer,parameter :: n=14610
|
|
14
|
+
integer :: i,day,k
|
|
15
|
+
real*8 :: h,a(n),xj(n),yj(n),zj(n),x1,x2,x3,x4,x5,x6,
|
|
16
|
+
& f1,f2,f3,f4,f5,f6,ka1,ka2,ka3,ka4,ka5,ka6,kb1,kb2,kb3,
|
|
17
|
+
& kb4,kb5,kb6,kc1,kc2,kc3,kc4,kc5,kc6,kd1,kd2,kd3,kd4,
|
|
18
|
+
& kd5,kd6,gs,gj,xr,xrj,xmj
|
|
19
|
+
|
|
20
|
+
open(10,file='z_jupitar-2.txt')
|
|
21
|
+
do i=1,n
|
|
22
|
+
read(10,*) a(i),xj(i),yj(i),zj(i)
|
|
23
|
+
end do
|
|
24
|
+
close(10)
|
|
25
|
+
|
|
26
|
+
! 初期条件
|
|
27
|
+
x1=3.64d-7
|
|
28
|
+
x2=0.0d0
|
|
29
|
+
x3=0.0d0
|
|
30
|
+
x4=0.0d0
|
|
31
|
+
x5=8.0d0
|
|
32
|
+
x6=0.0d0
|
|
33
|
+
h=20.0d0
|
|
34
|
+
write(*,*) 0,x1,x2,x3,xj(1),yj(1),zj(1)
|
|
35
|
+
|
|
36
|
+
! 彗星の位置推算 Runge-Kutta法
|
|
37
|
+
|
|
38
|
+
do k=1,n-3,2
|
|
39
|
+
i=k
|
|
40
|
+
day=(i+1)*10
|
|
41
|
+
|
|
42
|
+
ka1=h*f1(x4)
|
|
43
|
+
ka2=h*f2(x5)
|
|
44
|
+
ka3=h*f3(x6)
|
|
45
|
+
ka4=h*f4(x1,x2,x3)
|
|
46
|
+
ka5=h*f5(x1,x2,x3)
|
|
47
|
+
ka6=h*f6(x1,x2,x3)
|
|
48
|
+
|
|
49
|
+
! write(*,*) ka1,ka2,ka3,ka4,ka5,ka6
|
|
50
|
+
|
|
51
|
+
i=i+1
|
|
52
|
+
|
|
53
|
+
kb1=h*f1(x4+ka4/2.0d0)
|
|
54
|
+
kb2=h*f2(x5+ka5/2.0d0)
|
|
55
|
+
kb3=h*f3(x6+ka6/2.0d0)
|
|
56
|
+
kb4=h*f4(x1+ka1/2.0d0,x2+ka2/2.0d0,x3+ka3/2.0d0)
|
|
57
|
+
kb5=h*f5(x1+ka1/2.0d0,x2+ka2/2.0d0,x3+ka3/2.0d0)
|
|
58
|
+
kb6=h*f6(x1+ka1/2.0d0,x2+ka2/2.0d0,x3+ka3/2.0d0)
|
|
59
|
+
|
|
60
|
+
! write(*,*) kb1,kb2,kb3,kb4,kb5,kb6
|
|
61
|
+
|
|
62
|
+
kc1=h*f1(x4+kb4/2.0d0)
|
|
63
|
+
kc2=h*f2(x5+kb5/2.0d0)
|
|
64
|
+
kc3=h*f3(x6+kb6/2.0d0)
|
|
65
|
+
kc4=h*f4(x1+kb1/2.0d0,x2+kb2/2.0d0,x3+kb3/2.0d0)
|
|
66
|
+
kc5=h*f5(x1+kb1/2.0d0,x2+kb2/2.0d0,x3+kb3/2.0d0)
|
|
67
|
+
kc6=h*f6(x1+kb1/2.0d0,x2+kb2/2.0d0,x3+kb3/2.0d0)
|
|
68
|
+
|
|
69
|
+
! write(*,*) kc1,kc2,kc3,kc4,kc5,kc6
|
|
70
|
+
|
|
71
|
+
i=i+1
|
|
72
|
+
|
|
73
|
+
! write(*,*) i
|
|
74
|
+
|
|
75
|
+
kd1=h*f1(x4+kc4)
|
|
76
|
+
kd2=h*f2(x5+kc5)
|
|
77
|
+
kd3=h*f3(x6+kc6)
|
|
78
|
+
kd4=h*f4(x1+kc1,x2+kc2,x3+kc3)
|
|
79
|
+
kd5=h*f5(x1+kc1,x2+kc2,x3+kc3)
|
|
80
|
+
kd6=h*f6(x1+kc1,x2+kc2,x3+kc3)
|
|
81
|
+
|
|
82
|
+
! write(*,*) kd1,kd2,kd3,kd4,kd5,kd6
|
|
83
|
+
|
|
84
|
+
x1=x1+(ka1+kd1)/6.0d0+(kb1+kc1)/3.0d0
|
|
85
|
+
x2=x2+(ka2+kd2)/6.0d0+(kb2+kc2)/3.0d0
|
|
86
|
+
x3=x3+(ka3+kd3)/6.0d0+(kb3+kc3)/3.0d0
|
|
87
|
+
x4=x4+(ka4+kd4)/6.0d0+(kb4+kc4)/3.0d0
|
|
88
|
+
x5=x5+(ka5+kd5)/6.0d0+(kb5+kc5)/3.0d0
|
|
89
|
+
x6=x6+(ka6+kd6)/6.0d0+(kb6+kc6)/3.0d0
|
|
90
|
+
|
|
91
|
+
write(*,*) day,x1,x2,x3,x4,x5,x6
|
|
92
|
+
end do
|
|
93
|
+
|
|
94
|
+
stop
|
|
95
|
+
end program main
|
|
96
|
+
|
|
97
|
+
! 微分方程式
|
|
98
|
+
|
|
99
|
+
real*8 function f1(x4)
|
|
100
|
+
implicit none
|
|
101
|
+
real*8 :: x4
|
|
102
|
+
|
|
103
|
+
f1=x4
|
|
104
|
+
|
|
105
|
+
return
|
|
106
|
+
end function f1
|
|
107
|
+
|
|
108
|
+
real*8 function f2(x5)
|
|
109
|
+
implicit none
|
|
110
|
+
real*8 :: x5
|
|
111
|
+
|
|
112
|
+
f2=x5
|
|
113
|
+
|
|
114
|
+
return
|
|
115
|
+
end function f2
|
|
116
|
+
|
|
117
|
+
real*8 function f3(x6)
|
|
118
|
+
implicit none
|
|
119
|
+
real*8 :: x6
|
|
120
|
+
|
|
121
|
+
f3=x6
|
|
122
|
+
|
|
123
|
+
return
|
|
124
|
+
end function f3
|
|
125
|
+
|
|
126
|
+
real*8 function f4(x1,x2,x3)
|
|
127
|
+
implicit none
|
|
128
|
+
integer,parameter :: n=14610
|
|
14
129
|
integer :: i
|
|
15
|
-
real*8 :: x1,x2,x3,
|
|
130
|
+
real*8 :: x1,x2,x3,xj(n),yj(n),zj(n),
|
|
16
131
|
& gs,gj,xr,xrj,xmj
|
|
17
132
|
|
|
18
133
|
gs=2.95912208d-4
|
|
@@ -28,11 +143,11 @@
|
|
|
28
143
|
return
|
|
29
144
|
end function f4
|
|
30
145
|
|
|
31
|
-
real*8 function f5(
|
|
146
|
+
real*8 function f5(x1,x2,x3)
|
|
32
147
|
implicit none
|
|
33
148
|
integer,parameter :: n=14610
|
|
34
149
|
integer :: i
|
|
35
|
-
real*8 :: x1,x2,x3,
|
|
150
|
+
real*8 :: x1,x2,x3,xj(n),yj(n),zj(n),
|
|
36
151
|
& gs,gj,xr,xrj,xmj
|
|
37
152
|
|
|
38
153
|
gs=2.95912208d-4
|
|
@@ -48,11 +163,11 @@
|
|
|
48
163
|
return
|
|
49
164
|
end function f5
|
|
50
165
|
|
|
51
|
-
real*8 function f6(
|
|
166
|
+
real*8 function f6(x1,x2,x3)
|
|
52
167
|
implicit none
|
|
53
168
|
integer,parameter :: n=14610
|
|
54
169
|
integer :: i
|
|
55
|
-
real*8 :: x1,x2,x3,
|
|
170
|
+
real*8 :: x1,x2,x3,xj(n),yj(n),zj(n),
|
|
56
171
|
& gs,gj,xr,xrj,xmj
|
|
57
172
|
|
|
58
173
|
gs=2.95912208d-4
|
|
@@ -70,6 +185,7 @@
|
|
|
70
185
|
|
|
71
186
|
|
|
72
187
|
|
|
188
|
+
|
|
73
189
|
```
|
|
74
190
|
|
|
75
191
|
### 試したこと
|