weighting_cell_nodes.F

Go to the documentation of this file.

Copyright>        OpenRadioss
Copyright>        Copyright (C) 1986-2025 Altair Engineering Inc.
Copyright>
Copyright>        This program is free software: you can redistribute it and/or modify
Copyright>        it under the terms of the GNU Affero General Public License as published by
Copyright>        the Free Software Foundation, either version 3 of the License, or
Copyright>        (at your option) any later version.
Copyright>
Copyright>        This program is distributed in the hope that it will be useful,
Copyright>        but WITHOUT ANY WARRANTY; without even the implied warranty of
Copyright>        MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
Copyright>        GNU Affero General Public License for more details.
Copyright>
Copyright>        You should have received a copy of the GNU Affero General Public License
Copyright>        along with this program.  If not, see <https://www.gnu.org/licenses/>.
Copyright>
Copyright>
Copyright>        Commercial Alternative: Altair Radioss Software
Copyright>
Copyright>        As an alternative to this open-source version, Altair also offers Altair Radioss
Copyright>        software under a commercial license.  Contact Altair to discuss further if the
Copyright>        commercial version may interest you: https://www.altair.com/radioss/.
!||====================================================================
!||    weighting_cell_nodes   ../engine/source/interfaces/int22/weighting_cell_nodes.F
!||--- called by ------------------------------------------------------
!||    sinit22_fvm            ../engine/source/interfaces/int22/sinit22_fvm.F
!||--- uses       -----------------------------------------------------
!||    i22bufbric_mod         ../common_source/modules/interfaces/cut-cell-search_mod.F
!||====================================================================
      SUBROUTINE weighting_cell_nodes (
     .                    NIN,   IB,   ICELL , IRES, IDEMERGE)
C-----------------------------------------------
C   D e s c r i p t i o n
C-----------------------------------------------
C Interface Type22 (/INTER/TYPE22) is an FSI coupling method based on cut cell method. 
C   This experimental cut cell method is not completed, abandoned, and is not an official option.
C
! Get Nodes which is the farthest from intersection points
! equivalent to calculating mean adjacent surface ratio.
C-----------------------------------------------
C   M o d u l e s
C----------------------------------------------- 
c      USE INITBUF_MOD
      USE i22bufbric_mod 
c      USE I22TRI_MOD
c      USE ELBUFDEF_MOD
C-----------------------------------------------
C   I m p l i c i t   T y p e s
C-----------------------------------------------
#include      "implicit_f.inc"
C-----------------------------------------------
C   C o m m o n   B l o c k s
C-----------------------------------------------  
#include      "inter22.inc"
#include      "comlock.inc"
C-----------------------------------------------
C   D u m m y   A r g u m e n t s
C-----------------------------------------------
      INTEGER,INTENT(IN)      :: NIN,IB,ICELL
      INTEGER,INTENT(INOUT)   :: IRES, IDEMERGE
C-----------------------------------------------
C   L o c a l   V a r i a b l e s
C-----------------------------------------------
      INTEGER   ::  IsMain, N, IPOS, LEVEL, J, IFAC, I, NumNOD, ListNOD(8),K, NbCut
      my_real   ::  alpha(8),tag(6),ratio(6), nfac(8)
C-----------------------------------------------
C   P r e - C o n d i t i o n
C----------------------------------------------- 
      !IF(INT22==0)RETURN   !already checked
C-----------------------------------------------
C   S o u r c e    L i n e s
C----------------------------------------------- 
 
      ires         = 0
      nfac(1:8)    = zero
      idemerge     = 0
      
      numnod       = brick_list(nin,ib)%POLY(icell)%NumNOD 
      nbcut        = brick_list(nin,ib)%NbCut
      listnod(1:8) = brick_list(nin,ib)%POLY(icell)%ListNodID(1:8)
      alpha(1:8)     =zero
      
      DO j=1,6
        ratio(j)   = brick_list(nin,ib)%POLY(icell)%FACE(j)%Surf / brick_list(nin,ib)%Face_Brick(j)
      ENDDO
 
      DO k=1,numnod
       i           = listnod(k)
        DO j=1,3
         ifac      = int22_buf%iFacesFromNode(i,j)      
         !IF(RATIO(IFAC)==ZERO)CYCLE
         nfac(i)   = nfac(i) + one
         alpha(i)  = alpha(i) + ratio(ifac)
        enddo!next J
        IF(nfac(i)>zero)alpha(i) = alpha(i) / nfac(i)
        IF(alpha(i)>critdvol22 .AND. brick_list(nin,ib)%NODE(i)%NodWasMain==0)idemerge=1
      enddo!next K
      
      IF(numnod>0) ires = maxloc(alpha(1:8),1)
      
!      IF(NumNOD==0)THEN
!        print *, "**error : inter22. Connectivity issue."
!        stop
!      ENDIF
      
      RETURN
      END