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#if HAVE_CONFIG_H
# include "config.fh"
#endif
subroutine setup(g_fg, fg, ld_fg1, ld_fg2,
+ g_fld, fld, ld_fld1, ld_fld2,
+ g_bc, bc, ld_bc1)
#include "common"
c
integer ld_fg1, ld_fg2, ld_fld1, ld_fld2, ld_bc1
double precision fg(ld_fg1,ld_fg2, *)
double precision fld(ld_fld1, ld_fld2, *)
integer bc(ld_bc1, *)
integer g_fg, g_fld, g_bc
c
#include "mafdecls.fh"
#include "global.fh"
c
double precision rho0, ux0, uy0, t_rho, pi
integer i, j, ii, jj, me
integer ld(NDIM)
c
c Set simulation parameters
c
nsteps = 5000
viscosity = 1.0d00
delta_t = 1.0d00
xmax = 256.0
c
rho0 = 2.7
tmprtr0 = 1.0
ux0 = 0.0
uy0 = 0.0
t_rho = 1.0d00
uxbc = 0.5
rhobc = rho0
c
rgas = 1.0
a_vdw = 0.0d00
b_vdw = 0.0d00
c
delta_x = xmax/dble(size(1)-1)
cspd = sqrt(2.0d00)*delta_x/delta_t
if (ga_nodeid().eq.0) write(6,*) 'Value of tau_rho is ',
+ 6.0d00*viscosity/(cspd**2*delta_t) + 0.5d00
c
c Find low and high indices of locally held data
c
me = ga_nodeid()
call nga_distribution(g_fg, me, lo, hi)
c
c Initialize boundary array
c
call ga_zero(g_bc)
do jj = width(2) + 1, dims(2) - width(2)
j = jj - width(2) - 1 + lo(2)
do ii = width(1) + 1, dims(1) - width(1)
i = ii - width(1) - 1 + lo(1)
if (i.eq.1) then
bc(ii,jj) = 1
else if (i.eq.size(1)) then
bc(ii,jj) = 1
else if (j.eq.1) then
bc(ii,jj) = 1
else if (j.eq.size(2)) then
bc(ii,jj) = 2
else
bc(ii,jj) = 0
endif
c bc(ii,jj) = 0
end do
end do
call ga_update_ghosts(g_bc)
c
c Create initial distribution of density and velocities
c
pi = 4.0d00*atan(1.0d00)
rtot = 0.0d00
do jj = width(2) + 1, dims(2) - width(2)
j = jj - width(2) - 1 + lo(2)
do ii = width(1) + 1, dims(1) - width(1)
i = ii - width(1) - 1 + lo(1)
fld(ii,jj,1) = rho0 + 0.0*cos(2.0d00*pi*dble(j-1)
+ / dble(size(2)-1))
fld(ii,jj,2) = ux0
fld(ii,jj,3) = uy0
fld(ii,jj,4) = rho0*rgas*tmprtr0/(1.0d00-b_vdw*rho0)
+ - a_vdw*rho0**2
fld(ii,jj,5) = 6.0d00*viscosity/(cspd**2*delta_t) + 0.5d00
rtot = rtot + fld(ii,jj,1)
end do
end do
c
c initialize lattice parameters
c
call initpar
c
c evaluate equilibrium distribution
c
call equil(g_fg, fg, ld_fg1, ld_fg2,
+ g_fld, fld, ld_fld1, ld_fld2,
+ g_bc, bc, ld_bc1)
do jj = width(2)+1, dims(2) - width(2)
do j = 1, 9
do ii = width(1)+1, dims(1) - width(1)
fg(ii,jj,j) = fg(ii,jj,j+9)
end do
end do
end do
call properties(g_fg, fg, ld_fg1, ld_fg2,
+ g_fld, fld, ld_fld1, ld_fld2,
+ g_bc, bc, ld_bc1)
c
return
end
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