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explosion.f90
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subroutine explosion
use parameters,only:pi
use globalvar,only:ix,jx,kx,U_h,U_m,flag_bnd,beta,flag_b_stg,dtout,&
flag_mhd,flag_mpi,my_rank,flag_pip,gm,beta,tend,&
x,y,z,dx,dy,dz,n_fraction,ndim,debug_direction,margin,dxc,mpi_siz,s_order,mpi_pos
use scheme_rot,only:pv2cq_mhd,pv2cq_hd
use model_rot, only:set_coordinate,setcq
implicit none
double precision :: ro_h(1:ix,1:jx,1:kx),ro_m(1:ix,1:jx,1:kx)
double precision :: vx_h(1:ix,1:jx,1:kx),vx_m(1:ix,1:jx,1:kx)
double precision :: vy_h(1:ix,1:jx,1:kx),vy_m(1:ix,1:jx,1:kx)
double precision :: vz_h(1:ix,1:jx,1:kx),vz_m(1:ix,1:jx,1:kx)
double precision :: P_h (1:ix,1:jx,1:kx),P_m (1:ix,1:jx,1:kx)
double precision :: B_x (1:ix,1:jx,1:kx)
double precision :: B_y (1:ix,1:jx,1:kx)
double precision :: B_z (1:ix,1:jx,1:kx)
double precision ::mask(ix,jx,kx)
double precision ::v_para(ix,jx,kx),v_perp(ix,jx,kx)
double precision ::b_para(ix,jx,kx),b_perp(ix,jx,kx)
double precision ::v_b_para(ix,jx,kx),b_b_para(ix,jx,kx)
double precision ::v_theta(ix,jx,kx),v_phi(ix,jx,kx)
double precision ::b_theta(ix,jx,kx),b_phi(ix,jx,kx)
double precision f_n,f_p,f_p_n,f_p_p,start(3),end(3)
double precision radius,P_max,V_max,x0,y0,z0,theta_b,theta_p,phi_p,b0
integer i,j,k,orix,oriy,oriz
!set ionization fraction-----------------
if(flag_pip.eq.0) then
f_n=1.0d0
f_p=1.0d0
f_p_n=1.0d0
f_p_p=1.0d0
else
f_n=n_fraction
f_p=1.0d0-n_fraction
f_p_n=f_n/(f_n+2.0d0*f_p)
f_p_p=2.0d0*f_p/(f_n+2.0d0*f_p)
endif
!----------------------------------------
!Set coordinate (uniform grid)--------------------------
!!set lower and upper coordinate
start(1)=-1.0d0 ;end(1)=1.0d0
start(2)=-1.0d0 ;end(2)=1.0d0
start(3)=-1.0d0 ;end(3)=1.0d0
call set_coordinate(start,end)
! call set_coordinate_NUG(mpi_siz(1)*(ix-2*margin(1))+2*margin(1),&
! ix,x,dx,dxc,s_order,0.0d0,2.0d0,2.0d-2,1.0d0,1.0d3,mpi_pos(1),margin(1),1)
!---------------------------------------
!!default boundary condition----------------------
if (flag_bnd(1) .eq.-1) flag_bnd(1)=1
if (flag_bnd(2) .eq.-1) flag_bnd(2)=1
if (flag_bnd(3) .eq.-1) flag_bnd(3)=1
if (flag_bnd(4) .eq.-1) flag_bnd(4)=1
if (flag_bnd(5) .eq.-1) flag_bnd(5)=1
if (flag_bnd(6) .eq.-1) flag_bnd(6)=1
!-------------------------------------------------
!!!========================================================
!set parameter----------------------------------------
radius=0.3d0
P_max=0.1d1
V_max=0.5d0*0
theta_b=pi*0.5*0
!(x0,y0,z0) center of explosion
orix=ix/2+1 ;oriy=jx/2+1;oriz=kx/2+1
x0=x(orix)-0.5d0*dx(1)
if(ix-margin(1)*2.eq.1)x(margin(1)+1)=x0
if (ndim .ge.2) then
y0=y(oriy)-0.5d0*dy(1)
else
y0=y(oriy)
endif
if (ndim.ge.3) then
z0=z(oriz)-0.5d0*dz(1)
else
z0=z(oriz)
endif
!-------------------------------------------------
do k=1,kx
do j=1,jx
do i=1,ix
P_h(i,j,k)=f_p_n*(1.0d0/gm+P_max* &
exp(-((x(i))**2+(y(j)-y0)**2+(z(k)-z0)**2)/radius**2))
P_m(i,j,k)=f_p_p*(1.0d0/gm+P_max* &
exp(-((x(i))**2+(y(j)-y0)**2+(z(k)-z0)**2)/radius**2))
vx_h(i,j,k)=V_max* &
exp(-((x(i))**2+(y(j)-y0)**2+(z(k)-z0)**2)/radius**2)
vx_m(i,j,k)=V_max* &
exp(-((x(i))**2+(y(j)-y0)**2+(z(k)-z0)**2)/radius**2)
enddo
enddo
enddo
B0=sqrt(2.0/(gm*beta))
ro_h=1.0d0*f_n
ro_m=1.0d0*f_p
vy_h=0.0d0
vz_h=0.0d0
vy_m=0.0d0
vz_m=0.0d0
if(debug_direction.eq.1) then
phi_p=0.0d0
theta_p=pi/2.0d0
else if(debug_direction.eq.2) then
phi_p=pi/2.0d0
theta_p=pi/2.0d0
else if(debug_direction.eq.3) then
phi_p=0.0d0
theta_p=0.0d0
else if(debug_direction.eq.4) then
phi_p=pi/4.0d0
theta_p=pi/2.0d0
else if(debug_direction.eq.5) then
phi_p=0.0d0
theta_p=pi/4.0d0
else if(debug_direction.eq.6) then
phi_p=pi/2.0d0
theta_p=pi/4.0d0
else if(debug_direction.eq.7) then
phi_p=pi/4.0d0
theta_p=pi/4.0d0
endif
b_para=B0
b_theta=0
b_phi=0
b_x=b_para*sin(theta_p)*cos(phi_p)+ &
b_theta*cos(theta_p)*cos(phi_p)-b_phi*sin(phi_p)
b_y=b_para*sin(theta_p)*sin(phi_p)+ &
b_theta*cos(theta_p)*sin(phi_p)+b_phi*cos(phi_p)
b_z=b_para*cos(theta_p)-b_theta*sin(theta_p)
!!!========================================================
!convert PV2cq and set that value to global variable 'U_h' and/or 'U_m'
call setcq(ro_m,vx_m,vy_m,vz_m,p_m,B_x,B_y,B_z, &
ro_h,vx_h,vy_h,vz_h,p_h)
!---------------------------------------------------------------------
!set default output period and time duration--------------------------
if(tend.lt.0.0) then
tend=0.4d0
dtout=tend/10.0
if(flag_mpi.eq.0 .or.my_rank.eq.0) print *,"TEND",dtout,tend
endif
!---------------------------------------------------------------------
end subroutine explosion