ebcvit4.F

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!||====================================================================
!||    ebcvit4    ../engine/source/boundary_conditions/ebcs/ebcvit4.F
!||--- called by ------------------------------------------------------
!||    ebcclap    ../engine/source/boundary_conditions/ebcs/ebcclap.F
!||--- uses       -----------------------------------------------------
!||    ebcs_mod   ../common_source/modules/boundary_conditions/ebcs_mod.F90
!||====================================================================
      SUBROUTINE ebcvit4(V, A, LISTE, NOD, FV, RESO, EBCS)
      USE ebcs_mod
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      "com08_c.inc"
C-----------------------------------------------
C   D u m m y   A r g u m e n t s
C-----------------------------------------------
      INTEGER LISTE(*),NOD
      my_real v(3,*),a(3,*),reso(3,nod),fv(*)
      TYPE(t_ebcs_vel), INTENT(IN) :: EBCS
C-----------------------------------------------
C   L o c a l   V a r i a b l e s
C-----------------------------------------------
      INTEGER I,N,IVX,IVY,IVZ
      my_real c,lcar,alp,alpdt,ax,ay,az,vx,vy,vz
 
      ivx = ebcs%ivx
      ivy = ebcs%ivy
      ivz = ebcs%ivz
      IF(ivx>0)THEN
        vx=ebcs%vx*fv(ivx)
      ELSE
        vx=ebcs%vx
      ENDIF
      IF(ivy>0)THEN
        vy=ebcs%vy*fv(ivy)
      ELSE
        vy=ebcs%vy
      ENDIF
      IF(ivz>0)THEN
        vz=ebcs%vz*fv(ivz)
      ELSE
        vz=ebcs%vz
      ENDIF
      c=ebcs%c
      lcar=ebcs%lcar
      alp=zero
      IF(lcar>zero)alp=c/lcar
      alpdt=alp*dt1
C
      IF(tt==zero)THEN
            DO i=1,nod
              n=liste(i)
              reso(1,i)=a(1,n)
              reso(2,i)=a(2,n)
              reso(3,i)=a(3,n)
            ENDDO
      ENDIF
C
c      write(6,*)'ebcvit4',VX,VY,VZ
      IF(alp>zero)THEN
        DO i=1,nod
          n=liste(i)
c          write(6,*)'ebcvit5 N',N,' RESO',RESO(3,I),'A',A(3,N)
          ax=reso(1,i)+alpdt*(a(1,n)-reso(1,i))
          ay=reso(2,i)+alpdt*(a(2,n)-reso(2,i))
          az=reso(3,i)+alpdt*(a(3,n)-reso(3,i))
C memorisation de la reaction
          reso(1,i)=ax
          reso(2,i)=ay
          reso(3,i)=az
C
          a(1,n)=a(1,n)-ax+alp*(vx-v(1,n))
          a(2,n)=a(2,n)-ay+alp*(vy-v(2,n))
          a(3,n)=a(3,n)-az+alp*(vz-v(3,n))
        ENDDO
      ELSE
        DO i=1,nod
          n=liste(i)
          a(1,n)=zero
          a(2,n)=zero
          a(3,n)=zero
          v(1,n)=vx
          v(2,n)=vy
          v(3,n)=vz
        ENDDO      
      ENDIF
      RETURN
      END