1!     CalculiX - A 3-dimensional finite element program
2!              Copyright (C) 1998-2021 Guido Dhondt
3!
4!     This program is free software; you can redistribute it and/or
5!     modify it under the terms of the GNU General Public License as
6!     published by the Free Software Foundation(version 2);
7!
8!
9!     This program is distributed in the hope that it will be useful,
10!     but WITHOUT ANY WARRANTY; without even the implied warranty of
11!     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12!     GNU General Public License for more details.
13!
14!     You should have received a copy of the GNU General Public License
15!     along with this program; if not, write to the Free Software
16!     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
17!
18      subroutine materialdata_cond(imat,ntmat_,t1l,cocon,ncocon,cond)
19!
20      implicit none
21!
22!     determines the thermal conductivity
23!
24      integer imat,ntmat_,id,ncocon(2,*),ncoconst,seven
25!
26      real*8 t1l,cocon(0:6,ntmat_,*),cond
27!
28      seven=7
29!
30!     calculating the conductivity coefficients
31!
32      ncoconst=ncocon(1,imat)
33      if(ncoconst.eq.0) then
34         write(*,*) '*ERROR in materialdata_cond'
35         write(*,*)
36     &        '       fluid conductivity is lacking'
37         call exit(201)
38      elseif(ncoconst.gt.1) then
39         write(*,*) '*ERROR in materialdata_cond'
40         write(*,*)
41     &        '       conductivity for fluids must be isotropic'
42         call exit(201)
43      endif
44!
45      call ident2(cocon(0,1,imat),t1l,ncocon(2,imat),seven,id)
46      if(ncocon(2,imat).eq.0) then
47         cond=0.d0
48         continue
49      elseif(ncocon(2,imat).eq.1) then
50         cond=cocon(1,1,imat)
51      elseif(id.eq.0) then
52         cond=cocon(1,1,imat)
53      elseif(id.eq.ncocon(2,imat)) then
54         cond=cocon(1,id,imat)
55      else
56         cond=(cocon(1,id,imat)+
57     &        (cocon(1,id+1,imat)-cocon(1,id,imat))*
58     &        (t1l-cocon(0,id,imat))/
59     &        (cocon(0,id+1,imat)-cocon(0,id,imat)))
60     &
61      endif
62!
63      return
64      end
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