c
c ==========================================================
subroutine flgout2meu(q,mx,my,lb,ub,qo,mxo,myo,lbo,ubo,
& lbr,ubr,shaper,meqn,nc,t)
c ==========================================================
c
c # Computes primitives for two-component Euler equations
c # for output and flagging.
c
c # Copyright (C) 2002 Ralf Deiterding
c # Brandenburgische Universitaet Cottbus
c
c # Copyright (C) 2003-2007 California Institute of Technology
c # Ralf Deiterding, ralf@amroc.net
c
implicit double precision(a-h,o-z)
common /PhysData/ Wk, g, pinf, RU, PA
dimension Wk(2), g(2), pinf(2)
c
integer meqn, mx, my, mxo, myo
dimension q(meqn,mx,my), qo(mxo,myo)
dimension Xk(2), cap(2)
c
integer lb(2), ub(2), lbo(2), ubo(2), lbr(2), ubr(2), shaper(2),
& mresult, stride, imin(2), imax(2), i, j, d, getindx
c
stride = (ub(1) - lb(1))/(mx-1)
do 5 d = 1, 2
imin(d) = max(lb(d), lbr(d))
imax(d) = min(ub(d), ubr(d))
c
if (mod(imin(d)-lb(d),stride) .ne. 0) then
imin(d) = imin(d) + stride - mod(imin(d)-lb(d),stride)
endif
imin(d) = getindx(imin(d), lb(d), stride)
c
if (mod(imax(d)-lb(d),stride) .ne. 0) then
imax(d) = imax(d) - mod(imax(d)-lb(d),stride)
endif
imax(d) = getindx(imax(d), lb(d), stride)
5 continue
c
cap(1) = 1.d0 / (g(1)-1.d0)
cap(2) = 1.d0 / (g(2)-1.d0)
do 10 i = imin(1), imax(1)
do 10 j = imin(2), imax(2)
c
if (nc.gt.4) then
gamma1 = 1.d0 / q(5,i,j)
gamma = gamma1 + 1.d0
p = gamma1*(q(4,i,j) - 0.5d0*(q(2,i,j)**2 +
& q(3,i,j)**2)/q(1,i,j) - q(6,i,j))
pin = q(6,i,j)*gamma1/gamma
Xk(1) = (q(5,i,j)-cap(2)) / (cap(1)-cap(2))
Xk(2) = 1.d0-Xk(1)
W = Xk(1)*Wk(1) + Xk(2)*Wk(2)
endif
c
c # Density
if (nc.eq.1) qo(i,j) = q(1,i,j)
c # Velocity u
if (nc.eq.2) qo(i,j) = q(2,i,j)/q(1,i,j)
c # Velocity v
if (nc.eq.3) qo(i,j) = q(3,i,j)/q(1,i,j)
c # Total energy density
if (nc.eq.4) qo(i,j) = q(4,i,j)
c # Temperature
if (nc.eq.5) qo(i,j) = p/(q(1,i,j)*RU/W)
c # Pressure
if (nc.eq.6) qo(i,j) = p
c # Gamma
if (nc.eq.7) qo(i,j) = gamma
c # Y1
if (nc.eq.8) qo(i,j) = Xk(1)*Wk(1)/W
c # Y2
if (nc.eq.9) qo(i,j) = Xk(2)*Wk(2)/W
c # pinf
if (nc.eq.10) qo(i,j) = pin
c # Speed of sound
if (nc.eq.11) qo(i,j) = dsqrt(gamma*(p+pin)/
& q(1,i,j))
c
10 continue
c
return
end