From CFD-Wiki
!Sample program for solving Lid-driven cavity flow test using SIMPLE-algorithm
! calculation of grid modul
!Copyright (C) 2010 Michail Kiričkov
!Copyright (C) 2016 Michail Kiričkov, Kaunas University for Technology
!
!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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
!**********************************************************************
Subroutine Grid_rectangular
include 'icomm_1.f90'
x=0.
y=0.
SLx = 1.
SLy = 1.
Xbeg = 0.
Ybeg = 0.
NXmax = 80
NYmax = 80
NXmaxC = NXmax + 1
NYmaxC = NYmax + 1
N_centr = ( NXmax + 1 )/2 +1
!----------------------------------------------------------
DO 2 I=1, NXmax
DO 2 J=1, NYmax
X(I,J) = Xbeg + (SLx /(NXmax-1))* (i-1)
2 continue
DO 3 J=1, NYmax
DO 3 I=1, NXmax
Y(I,J) = Ybeg + (SLy /(NYmax-1))* (j-1)
3 continue
!----------------------------------------------------------
open (22,file='GRID.dat')
WRITE(22,*)'VARIABLES = "X", "Y" '
WRITE (22,*)' ZONE I=' ,NXmax, ', J=', NYmax, ', F=POINT'
DO 1 J=1, NYmax
DO 1 I=1, NXmax
WRITE (22,*) X(I,J), Y(I,J)
1 continue
open (21,file='GRID.txt')
write(21,*) NYmax,NXmax
DO 4 J=1, NYmax
DO 4 I=1, NXmax
WRITE (21,*) X(I,J), Y(I,J)
4 continue
close(21)
Return
End
