wpor.F

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!||====================================================================
!||    wpor     ../engine/source/ale/grid/wpor.F
!||--- called by ------------------------------------------------------
!||    alewdx   ../engine/source/ale/grid/alewdx.F
!||====================================================================
       SUBROUTINE wpor(
     1    GEO,NODPOR,X   ,V      ,VR     ,
     2    W  ,NALE,NPORGEO        )
C-----------------------------------------------
C   D e s c r i p t i o n
C-----------------------------------------------
C     GRID VELOCITY POROUS MEDIA
C     AUGUST 1994
C-----------------------------------------------
C   I m p l i c i t   T y p e s
C-----------------------------------------------
#include      "implicit_f.inc"
C-----------------------------------------------
C   C o m m o n   B l o c k s
C-----------------------------------------------
#include      "param_c.inc"
#include      "com04_c.inc"
#include      "com08_c.inc"
C-----------------------------------------------
C   D u m m y   A r g u m e n t s
C-----------------------------------------------
      INTEGER NODPOR(*), NALE(*), NPORGEO(*)
      my_real GEO(NPROPG,NUMGEO),X(3,NUMNOD),V(3,NUMNOD),VR(3,NUMNOD),W(3,NUMNOD)
C-----------------------------------------------
C   L o c a l   V a r i a b l e s
C-----------------------------------------------
      INTEGER NAD,IG,N,IR,M,I,JP
      my_real VG(3),V1X2,V2X1,V2X3,V3X2,V3X1,V1X3
C-----------------------------------------------
C   S o u r c e   L i n e s
C-----------------------------------------------
      nad=0
      DO ig=1,numgeo
        IF(int(geo(12,ig)) /= 15)cycle
        n = nporgeo(ig)        ! num of local nodes stored in a specific spmd array
        IF(n == 0)cycle
        ir=int(geo(33,ig))
        IF(ir > 0)THEN
          m=int(geo(29,ig))
          vg(1)=vr(1,m)
          vg(2)=vr(2,m)
          vg(3)=vr(3,m)
          DO i=nad+1,nad+n
            jp=nodpor(i)
              IF(iabs(nale(jp)) == 1)THEN
          v1x2=vg(1)*(x(2,jp)-x(2,m))
          v2x1=vg(2)*(x(1,jp)-x(1,m))
          v2x3=vg(2)*(x(3,jp)-x(3,m))
          v3x2=vg(3)*(x(2,jp)-x(2,m))
          v3x1=vg(3)*(x(1,jp)-x(1,m))
          v1x3=vg(1)*(x(3,jp)-x(3,m))
          w(1,jp)= v(1,m) + v2x3-v3x2-half*dt12*(vg(2)*v2x1+vg(3)*v3x1)
          w(2,jp)= v(2,m) + v3x1-v1x3-half*dt12*(vg(3)*v3x2+vg(1)*v1x2)
          w(3,jp)= v(3,m) + v1x2-v2x1-half*dt12*(vg(1)*v1x3+vg(2)*v2x3)
              ENDIF
          ENDDO 
        ENDIF
        nad=nad+n
      enddo!next IG
C
      RETURN
      END