!
!     CalculiX - A 3-dimensional finite element program
!              Copyright (C) 1998-2018 Guido Dhondt
!
!     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(version 2);
!     
!
!     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., 675 Mass Ave, Cambridge, MA 02139, USA.
!
      subroutine calcumfa(nface,vfa,shcon,nshcon,ielmat,ntmat_,
     &  ithermal,mi,ielfa,umfa)
!
!     calculation of the dynamic viscosity at the face centers
!
      implicit none
!
      integer nface,i,nshcon(*),imat,ithermal,ntmat_,mi(*),
     &  ielmat(mi(3),*),ielfa(4,*)
!
      real*8 t1l,vfa(0:7,*),dvi,shcon(0:3,ntmat_,*),umfa(*)
!     
c$omp parallel default(none)
c$omp& shared(nface,vfa,ielmat,ielfa,shcon,nshcon,ntmat_,ithermal,umfa)
c$omp& private(i,t1l,imat,dvi)
c$omp do
      do i=1,nface
         t1l=vfa(0,i)
!
!        take the material of the first adjacent element
!
         imat=ielmat(1,ielfa(1,i))
         call materialdata_dvi(shcon,nshcon,imat,dvi,t1l,ntmat_,
     &            ithermal)
         umfa(i)=dvi
c         write(*,*) 'calcumfa ',umfa(i)
      enddo
c$omp end do
c$omp end parallel
!            
      return
      end
