From CFD-Wiki
!Sample program for solving Smith-Hutton Test using different schemes
!of covective terms approximation - QUICK scheme implementation modul
!Copyright (C) 2005 Michail Kiričkov
!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 QUICK(Con_f,Fi_U,Fi_C,Fi_D,Fi_DD,Delta_f)
If(Con_f.GT.0.)then
Delta_f= 0.375 * Fi_D - 0.25 * Fi_C - 0.125 * Fi_U
else
Delta_f= -0.375 * Fi_DD + 0.25 * Fi_D + 0.125 * Fi_C
End If
Return
End