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  • src/2d/equations/euler/rprhok/flg2eurhok.f

    c
    c     ==========================================================
          subroutine flg2eurhok(q,mx,my,lb,ub,qf,mxo,myo,lbo,ubo,
         &     lbr,ubr,shaper,meqn,mcomp,time)
    c     ==========================================================
    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@cacr.caltech.edu
    c
          implicit double precision(a-h,o-z)
          include  "ck.i"    
    c
          integer meqn, mx, my, mxo, myo
          dimension q(meqn,mx,my), qf(mxo,myo)
    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))
    
             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)  
    
             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
    
          do 10 i = imin(1), imax(1)
             do 10 j = imin(2), imax(2)  
     
    c     Compute rho
                if (mcomp.eq.1) then 
                   qf(i,j) = 0.d0
                   do k = 1, Nsp
                      qf(i,j) = qf(i,j) + q(k,i,j)
                   enddo
    c              # Convert g/cm**3 into kg/m**3
                   if (ckunits) qf(i,j) = qf(i,j)*1.d3
    c     Compute p
                else if (mcomp.eq.2) then 
                   rhoW = 0.d0
                   do k = 1, Nsp
                      rhoW = rhoW + q(k,i,j)/Wk(k)
                   enddo
                   T = q(Nsp+4,i,j)
                   qf(i,j) = rhoW*RU*T
    c              # Convert dynes/cm**2 into Pa = J/m**2
                   if (ckunits) qf(i,j) = qf(i,j)*1.d-1
    c     Compute gamma
                else if (mcomp.eq.3) then 
                   rhoW = 0.d0
                   do k = 1, Nsp
                      rhoW = rhoW + q(k,i,j)/Wk(k)
                   enddo
                   T = q(Nsp+4,i,j)
                   rhoCp = avgtabip(T,q(1,i,j),cpk,Nsp)
                   qf(i,j) = RU/(rhoCp/rhoW-RU)+1.d0 
    c     Compute Yk
                else if (mcomp.ge.4.and.mcomp.lt.4+Nsp) then
                   rho = 0.d0
                   do k = 1, Nsp
                      rho = rho + q(k,i,j)
                   enddo
                   qf(i,j) = q(mcomp-3,i,j)/rho
                else
                   qf(i,j) = 0.d0
                endif
    c
     10      continue         
    c
          return
          end
    

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