COnvrg sub.f90 - calculationg

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Revision as of 20:52, 20 September 2005

!Sample program for solving Smith-Hutton Test using different schemes 
of covective terms approximation -  Convergence Criteria computing modul
Copyright (C) 2005  Michail Kirichkov

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 Convergence_Criteria(NF)

include 'icomm_1.f90'

Dimension Res(nx,ny)
 
res =  0.


Res_Sum = 0.

Res_vol = 0.

	Do 20 I=2,NXmaxP-1

	Do 20 J=2,NYmaxP-1

	  Res_vol =		Ap(i,j) * F(i  ,j  ,nf) -   &

				(	As(i,j) * F(i  ,j-1,nf) +   &

					An(i,j) * F(i  ,j+1,nf) +   &

					Aw(i,j) * F(i-1,j  ,nf) +   &

					Ae(i,j) * F(i+1,j  ,nf)  )  &
													- Sp(i,j)		

	  res(i,j) =  Res_vol 						

	  Res_Sum = Res_Sum + Res_vol

		  
	20 continue

write(*,*)Res_Sum

Return

End