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rmasses.f90
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rmasses.f90
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! Distribution of real masses in nodes
subroutine rmasses
use arrays
include 'precision.inc'
include 'params.inc'
include 'arrays.inc'
real*8, parameter :: c1d12 = 1./12.
! Calcualtion of the TRUE GRAVITATIONAL ZONE MASSES
!-----------------------------------
! THE area(n,it) is inverse of "real" DOUBLE area (=1./det) =>
! area (n,it) ( in program) = 1./(2 real_area)
! real_area = 0.5* (1./area(n,t))
!-----------------------------------
rmass = 0
do i = 1, nx-1
do j = 1, nz-1
! Area and densities of zones
dens = Eff_dens( j,i )
! Distribution 1/3 of the mass of each element to the nodes
! *0.5 - becuase 1/area is double of real area; *0.5 - 2 grids
! (1) Element A:
rmass(j ,i )=rmass(j ,i )+c1d12/area(j,i,1)*dens
rmass(j+1,i )=rmass(j+1,i )+c1d12/area(j,i,1)*dens
rmass(j ,i+1)=rmass(j ,i+1)+c1d12/area(j,i,1)*dens
! (2) Element B:
rmass(j+1,i+1)=rmass(j+1,i+1)+c1d12/area(j,i,2)*dens
rmass(j+1,i )=rmass(j+1,i )+c1d12/area(j,i,2)*dens
rmass(j ,i+1)=rmass(j ,i+1)+c1d12/area(j,i,2)*dens
! (3) Element C:
rmass(j ,i )=rmass(j ,i )+c1d12/area(j,i,3)*dens
rmass(j+1,i )=rmass(j+1,i )+c1d12/area(j,i,3)*dens
rmass(j+1,i+1)=rmass(j+1,i+1)+c1d12/area(j,i,3)*dens
! (4) Element D:
rmass(j ,i )=rmass(j ,i )+c1d12/area(j,i,4)*dens
rmass(j+1,i+1)=rmass(j+1,i+1)+c1d12/area(j,i,4)*dens
rmass(j ,i+1)=rmass(j ,i+1)+c1d12/area(j,i,4)*dens
enddo
enddo
return
end