dt6law.F

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!||====================================================================
!||    dt6law   ../starter/source/materials/time_step/dt6law.F
!||--- called by ------------------------------------------------------
!||    dtmain   ../starter/source/materials/time_step/dtmain.F
!||--- calls      -----------------------------------------------------
!||    dtel     ../starter/source/materials/time_step/dtel.F
!||    dtsph    ../starter/source/materials/time_step/dtsph.F
!||====================================================================
      SUBROUTINE dt6law(PM,EINT,RK,RE,GEO,PID,MAT, DELTAX, AIRE, VOL, DTX)
C
C     CALCULATION OF ELEMENTARY DT FOR NEWTONIAN FLUID
C
C-----------------------------------------------
C   I m p l i c i t   T y p e s
C-----------------------------------------------
#include      "implicit_f.inc"
C-----------------------------------------------
C   G l o b a l   P a r a m e t e r s
C-----------------------------------------------
#include      "mvsiz_p.inc"
C-----------------------------------------------
C   C o m m o n   B l o c k s
C-----------------------------------------------
#include      "vect01_c.inc"
#include      "param_c.inc"
C-----------------------------------------------
C   D u m m y   A r g u m e n t s
C-----------------------------------------------
      my_real :: pm(npropm,*), eint(*), rk(*), re(*),geo(npropg,*), deltax(*), aire(*), vol(*), dtx(*)
      INTEGER PID(*),MAT(*)
C-----------------------------------------------
C   L o c a l   V a r i a b l e s
C-----------------------------------------------
      INTEGER :: I, MX
      my_real :: rho0(mvsiz), vis(mvsiz), bulk(mvsiz),dpdm(mvsiz), espe(mvsiz), ssp(mvsiz), tmu(mvsiz), psh(mvsiz)
C-----------------------------------------------
      DO i=lft,llt
         mx  = mat(i)
         rho0(i)=pm( 1,mx)
         vis(i) =pm(24,mx)*rho0(i)
         bulk(i) = pm(32,mx)  ! reference bulk modulus
         tmu(i) =pm(81,mx)
         vis(i) = zero
      END DO
      
      IF(jtur/=0)THEN
         DO i=lft,llt
            tmu(i)=tmu(i)*rk(i)*rk(i) / max(em15,re(i))
            vis(i)=vis(i)+tmu(i)
         END DO
      ENDIF
      
      DO i=lft,llt
         espe(i)=eint(i)
      END DO
 
      DO i=lft,llt
         ! More precise estimator is to call EOSMAIN to compute BULK modulus updated for each element
         ssp(i)=sqrt(bulk(i)/rho0(i))   ! G=0 with law6
      END DO
      
      IF(jsph==0)THEN
         CALL dtel(ssp,pm,geo,pid,mat, rho0, vis, deltax, aire, vol, dtx)
      ELSE
         CALL dtsph(ssp,pm,geo,pid,mat, rho0, vis, deltax, vol, dtx)
      ENDIF
C-----------
      RETURN
      END