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checkMetrics.f90
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checkMetrics.f90
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!> @file checkMetrics.f90
!!
!! Checking of grid metrics for correctness.
!
! *****************************************************************************
!
! (c) J. Blazek, CFD Consulting & Analysis, www.cfd-ca.de
! Created February 25, 2014
! Last modification: May 22, 2014
!
! *****************************************************************************
!
! This program is free software; you can redistribute it and/or
! modify it under the terms of the GNU General Public License
! as published by the Free Software Foundation; either version 2
! of the License, or (at your option) any later version.
!
! This program is distributed in the hope that it will be useful,
! but WITHOUT ANY WARRANTY; without even the implied warranty of
! MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
! GNU General Public License for more details.
!
! You should have received a copy of the GNU General Public License
! along with this program; if not, write to the Free Software
! Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
!
! *****************************************************************************
!> Checks metrics by computing min. and max. volume, and by computing
!! the sum of face vectors for each control volume (should be zero).
!!
!! @param work work space (used to store the sum of face vectors
!! of a control volume - fvecSum)
!!
subroutine CheckMetrics( work )
use ModDataTypes
use ModGeometry
use ModNumerics
implicit none
! parameters
real(rtype) :: work(:)
! local variables
integer :: i, j, ib, ie, ibegf, iendf, ibegn, iendn
real(rtype) :: volmin, volmax, s, smax
real(rtype), allocatable :: fvecSum(:,:)
! *****************************************************************************
allocate(fvecSum(2,nndint)) ! Truong Dang ajoute 27/05/2017
fvecSum = Reshape( work,(/2, nndint/) )
! obtain mix. and max. control volume
volmin = Minval( vol )
volmax = Maxval( vol )
! compute sum of face vectors for each control volume (fvecSum)
do i=1,nndint
fvecSum(1,i) = 0.D0
fvecSum(2,i) = 0.D0
enddo
do ie=1,nedint
i = edge(1,ie)
j = edge(2,ie)
fvecSum(1,i) = fvecSum(1,i) + sij(1,ie)
fvecSum(2,i) = fvecSum(2,i) + sij(2,ie)
fvecSum(1,j) = fvecSum(1,j) - sij(1,ie)
fvecSum(2,j) = fvecSum(2,j) - sij(2,ie)
enddo
ibegf = 1
do ib=1,nsegs
iendf = ibound(1,ib)
if (btype(ib)<700 .or. btype(ib)>=800) then ! boundary faces (non-periodic)
do ie=ibegf,iendf
i = bface(1,ie)
j = bface(2,ie)
fvecSum(1,i) = fvecSum(1,i) + 0.5D0*sbf(1,ie)
fvecSum(2,i) = fvecSum(2,i) + 0.5D0*sbf(2,ie)
fvecSum(1,j) = fvecSum(1,j) + 0.5D0*sbf(1,ie)
fvecSum(2,j) = fvecSum(2,j) + 0.5D0*sbf(2,ie)
enddo
endif
ibegf = iendf + 1
enddo
ibegn = 1
do ib=1,nsegs
iendn = ibound(2,ib)
if (btype(ib)>=700 .and. btype(ib)<800) then ! periodic nodes
do ie=ibegn,iendn
i = bnode(1,ie)
j = bnode(2,ie)
fvecSum(1,i) = fvecSum(1,i) + fvecSum(1,j)
fvecSum(2,i) = fvecSum(2,i) + fvecSum(2,j)
fvecSum(1,j) = fvecSum(1,i)
fvecSum(2,j) = fvecSum(2,i)
enddo
endif
ibegn = iendn + 1
enddo
! compute maximum of the sum of face vectors
smax = -1.D+32
do i=1,nndint
s = Sqrt(fvecSum(1,i)**2+fvecSum(2,i)**2)
smax = Max(smax,s)
enddo
! print info
write(*,1000) smax,volmin,volmax
1000 format(" max. sum(S) = ",E11.4,/," min. volume = ",E11.4,/, &
" max. volume = ",E11.4,/)
end subroutine CheckMetrics