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u_ei.f90
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subroutine u_ei
! --------------------------------------------------- !
! F. Califano, February 2006 !
! !
! Calcolo delle velocita' degli elettroni e ioni !
! !
! u_e = U - j / n; u_i = U + de^2 j / n !
! ( de^2 = me / mi ) ! !
! !
! --------------------------------------------------- !
!**************************************************
! MPI PARALLEL VERSION: VALENTINI-FAGANELLO 2009
!**************************************************
use box_mod
use parameter_mod
use parallel_mod
use dom_distr_mod
use fields_DP_mod
use fields_UJ_mod
IMPLICIT NONE
integer :: ix, iy, iz
! expressions without smoothing
!Uex = Ux - de12inv * Jx * Dinv
!Uey = Uy - de12inv * Jy * Dinv
!Uez = Uz - de12inv * Jz * Dinv
!Uix = Ux + de12inv * de2 * Jx * Dinv
!Uiy = Uy + de12inv * de2 * Jy * Dinv
!Uiz = Uz + de12inv * de2 * Jz * Dinv
! smoothing to ideal-MHD towards boundaries
do iz = 1, nzl
do iy = 1, nyl
do ix = 1, nxl
Uex(ix,iy,iz) = Ux(ix,iy,iz) - de12inv * &
lambda(ixlg + ix - 1) * Jx(ix,iy,iz) * Dinv(ix,iy,iz)
Uey(ix,iy,iz) = Uy(ix,iy,iz) - de12inv * &
lambda(ixlg + ix - 1) * Jy(ix,iy,iz) * Dinv(ix,iy,iz)
Uez(ix,iy,iz) = Uz(ix,iy,iz) - de12inv * &
lambda(ixlg + ix - 1) * Jz(ix,iy,iz) * Dinv(ix,iy,iz)
Uix(ix,iy,iz) = Ux(ix,iy,iz) + de12inv * de2 * &
lambda(ixlg + ix - 1) * Jx(ix,iy,iz) * Dinv(ix,iy,iz)
Uiy(ix,iy,iz) = Uy(ix,iy,iz) + de12inv * de2 * &
lambda(ixlg + ix - 1) * Jy(ix,iy,iz) * Dinv(ix,iy,iz)
Uiz(ix,iy,iz) = Uz(ix,iy,iz) + de12inv * de2 * &
lambda(ixlg + ix - 1) * Jz(ix,iy,iz) * Dinv(ix,iy,iz)
enddo
enddo
enddo
end subroutine