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
|
c -*-Fortran-*-
c $Header: /home/eschnett/C/carpet/Carpet/CarpetExtra/IDHydroToy/src/InitialData.F77,v 1.1 2001/03/18 22:37:10 eschnett Exp $
#include "cctk.h"
#include "cctk_Parameters.h"
#include "cctk_Arguments.h"
subroutine IDHydroToy_InitialData (CCTK_ARGUMENTS)
implicit none
DECLARE_CCTK_ARGUMENTS
DECLARE_CCTK_PARAMETERS
DECLARE_CCTK_FUNCTIONS
CCTK_REAL pi
CCTK_REAL omega
integer i,j,k
pi = 4*atan(1.d0)
omega = sqrt(kx**2+ky**2+kz**2)
if (CCTK_EQUALS(initial_data,"plane")) then
do k=1,cctk_lsh(3)
do j=1,cctk_lsh(2)
do i=1,cctk_lsh(1)
u(i,j,k) = amplitude
$ * cos((kx*cart3d_x(i,j,k) + ky*cart3d_y(i,j,k)
$ + kz*cart3d_z(i,j,k) + omega*cctk_time) * pi)
vx(i,j,k) = u(i,j,k) * kx / omega
vy(i,j,k) = u(i,j,k) * ky / omega
vz(i,j,k) = u(i,j,k) * kz / omega
end do
end do
end do
else if (CCTK_EQUALS(initial_data,"gaussian")) then
do k=1,cctk_lsh(3)
do j=1,cctk_lsh(2)
do i=1,cctk_lsh(1)
u(i,j,k) = amplitude
$ * exp(- (spher3d_r(i,j,k) - radius + cctk_time)**2
$ / sigma**2)
vx(i,j,k) = u(i,j,k) * cart3d_x(i,j,k)/spher3d_r(i,j,k)
vy(i,j,k) = u(i,j,k) * cart3d_y(i,j,k)/spher3d_r(i,j,k)
vz(i,j,k) = u(i,j,k) * cart3d_z(i,j,k)/spher3d_r(i,j,k)
end do
end do
end do
else if (CCTK_EQUALS(initial_data, "box")) then
c Use kx,ky,kz as number of modes in each direction.
do k=1,cctk_lsh(3)
do j=1,cctk_lsh(2)
do i=1,cctk_lsh(1)
u(i,j,k) = amplitude
$ * sin(kx * (cart3d_x(i,j,k) - 0.5d0) * pi)
$ * sin(ky * (cart3d_y(i,j,k) - 0.5d0) * pi)
$ * sin(kz * (cart3d_z(i,j,k) - 0.5d0) * pi)
$ * cos(omega * cctk_time * pi)
vx(i,j,k) = amplitude
$ * cos(kx * (cart3d_x(i,j,k) - 0.5d0) * pi)
$ * sin(ky * (cart3d_y(i,j,k) - 0.5d0) * pi)
$ * sin(kz * (cart3d_z(i,j,k) - 0.5d0) * pi)
$ * sin(omega * cctk_time * pi)
$ * kx / omega
vy(i,j,k) = amplitude
$ * sin(kx * (cart3d_x(i,j,k) - 0.5d0) * pi)
$ * cos(ky * (cart3d_y(i,j,k) - 0.5d0) * pi)
$ * sin(kz * (cart3d_z(i,j,k) - 0.5d0) * pi)
$ * sin(omega * cctk_time * pi)
$ * ky / omega
vz(i,j,k) = amplitude
$ * sin(kx * (cart3d_x(i,j,k) - 0.5d0) * pi)
$ * sin(ky * (cart3d_y(i,j,k) - 0.5d0) * pi)
$ * cos(kz * (cart3d_z(i,j,k) - 0.5d0) * pi)
$ * sin(omega * cctk_time * pi)
$ * kz / omega
end do
end do
end do
else
do k=1,cctk_lsh(3)
do j=1,cctk_lsh(2)
do i=1,cctk_lsh(1)
u(i,j,k) = 0
vx(i,j,k) = 0
vy(i,j,k) = 0
vz(i,j,k) = 0
end do
end do
end do
end if
end
|
