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  • src/1d/equations/euler/rp/in1eu.f

    c
    c     ==========================================================
          subroutine in1eu(qi,mxi,lbi,ubi,q,mx,lb,ub,
         &     lbr,ubr,shaper,meqn,nc,t)
    c     ==========================================================
    c
    c     # Computes conserved quantities from primitives for 
    c     # Euler equations. The inverse to flgout1eu.f.
    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)
          common /param/  gamma,gamma1
          common /PhysData/  Wk, RU, PA
    c
          integer meqn, mx, mxi
          dimension q(meqn,mx), qi(mxi)
    c
          integer  lb(1), ub(1), lbi(1), ubi(1), lbr(1), ubr(1), shaper(1), 
         &     mresult, stride, imin(1), imax(1), i, getindx, d
    c
          stride = (ub(1) - lb(1))/(mx-1)
    
          imin(1) = max(lb(1), lbr(1))
          imax(1) = min(ub(1), ubr(1))
          
          if (mod(imin(1)-lb(1),stride) .ne. 0) then
             imin(1) = imin(1) + stride - mod(imin(1)-lb(1),stride) 
          endif
          imin(1) = getindx(imin(1), lb(1), stride)  
             
          if (mod(imax(1)-lb(1),stride) .ne. 0) then
             imax(1) = imax(1) - mod(imax(1)-lb(1),stride) 
          endif
          imax(1) = getindx(imax(1), lb(1), stride)  
    c
          do 10 i = imin(1), imax(1)
    c        # Density
             if (nc.eq.1) q(1,i) = qi(i) 
    c        # Velocity
             if (nc.eq.2) q(2,i) = q(1,i)*qi(i)
    c        # Total energy density
             if (nc.eq.3) q(3,i) = qi(i)
    c        # Temperature 
             if (nc.eq.4) q(3,i) = (qi(i)*RU*q(1,i))/
         &           (Wk*gamma1) + 0.5d0*(q(2,i)**2)/q(1,i)
    c        # Pressure
             if (nc.eq.5) q(3,i) = qi(i)/gamma1 + 0.5d0*
         &        (q(2,i)**2)/q(1,i)
     10   continue         
    
          return
          end
    

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