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!
! CalculiX - A 3-dimensional finite element program
! Copyright (C) 1998-2015 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 heattransfers(inpc,textpart,nmethod,iperturb,isolver,
& istep,istat,n,tinc,tper,tmin,tmax,idrct,ithermal,iline,ipol,
& inl,ipoinp,inp,alpha,mei,fei,ipoinpc,ctrl,ttime)
!
! reading the input deck: *HEAT TRANSFER
!
! isolver=0: SPOOLES
! 2: iterative solver with diagonal scaling
! 3: iterative solver with Cholesky preconditioning
! 4: sgi solver
! 5: TAUCS
! 7: pardiso
!
implicit none
!
logical timereset
!
character*1 inpc(*)
character*20 solver
character*132 textpart(16)
!
integer nmethod,iperturb,isolver,istep,istat,n,key,i,idrct,nev,
& ithermal,iline,ipol,inl,ipoinp(2,*),inp(3,*),mei(4),ncv,mxiter,
& ipoinpc(0:*),idirect
!
real*8 tinc,tper,tmin,tmax,alpha,fei(3),tol,fmin,fmax,ctrl(*),
& ttime
!
tmin=0.d0
tmax=0.d0
nmethod=4
alpha=0.d0
mei(4)=0
timereset=.false.
!
! defaults for fmin and fmax
!
fmin=-1.d0
fmax=-1.d0
!
if(iperturb.eq.0) then
iperturb=2
elseif((iperturb.eq.1).and.(istep.gt.1)) then
write(*,*) '*ERROR in heattransfers: perturbation analysis is'
write(*,*) ' not provided in a *HEAT TRANSFER step.'
call exit(201)
endif
!
if(istep.lt.1) then
write(*,*) '*ERROR in heattransfers: *HEAT TRANSFER can only'
write(*,*) ' be used within a STEP'
call exit(201)
endif
!
! default solver
!
solver=' '
if(isolver.eq.0) then
solver(1:7)='SPOOLES'
elseif(isolver.eq.2) then
solver(1:16)='ITERATIVESCALING'
elseif(isolver.eq.3) then
solver(1:17)='ITERATIVECHOLESKY'
elseif(isolver.eq.4) then
solver(1:3)='SGI'
elseif(isolver.eq.5) then
solver(1:5)='TAUCS'
elseif(isolver.eq.7) then
solver(1:7)='PARDISO'
endif
!
idirect=2
do i=2,n
if(textpart(i)(1:7).eq.'SOLVER=') then
read(textpart(i)(8:27),'(a20)') solver
elseif((textpart(i)(1:6).eq.'DIRECT').and.
& (textpart(i)(1:9).ne.'DIRECT=NO')) then
idirect=1
elseif(textpart(i)(1:9).eq.'DIRECT=NO') then
idirect=0
elseif(textpart(i)(1:11).eq.'STEADYSTATE') then
nmethod=1
elseif(textpart(i)(1:9).eq.'FREQUENCY') then
nmethod=2
elseif(textpart(i)(1:12).eq.'MODALDYNAMIC') then
iperturb=0
elseif(textpart(i)(1:11).eq.'STORAGE=YES') then
mei(4)=1
elseif(textpart(i)(1:7).eq.'DELTMX=') then
read(textpart(i)(8:27),'(f20.0)',iostat=istat) ctrl(27)
elseif(textpart(i)(1:9).eq.'TIMERESET') then
timereset=.true.
elseif(textpart(i)(1:17).eq.'TOTALTIMEATSTART=') then
read(textpart(i)(18:37),'(f20.0)',iostat=istat) ttime
else
write(*,*)
& '*WARNING in heattransfers: parameter not recognized:'
write(*,*) ' ',
& textpart(i)(1:index(textpart(i),' ')-1)
call inputwarning(inpc,ipoinpc,iline,
&"*HEAT TRANSFER%")
endif
enddo
if(nmethod.eq.1) ctrl(27)=1.d30
!
! default for modal dynamic calculations is DIRECT,
! for static or dynamic calculations DIRECT=NO
!
if(iperturb.eq.0) then
idrct=1
if(idirect.eq.0)idrct=0
else
idrct=0
if(idirect.eq.1)idrct=1
endif
!
if((ithermal.eq.0).and.(nmethod.ne.1).and.
& (nmethod.ne.2).and.(iperturb.ne.0)) then
write(*,*) '*ERROR in heattransfers: please define initial '
write(*,*) ' conditions for the temperature'
call exit(201)
else
ithermal=2
endif
!
if((nmethod.ne.2).and.(iperturb.ne.0)) then
!
! static or dynamic thermal analysis
!
if(solver(1:7).eq.'SPOOLES') then
isolver=0
elseif(solver(1:16).eq.'ITERATIVESCALING') then
isolver=2
elseif(solver(1:17).eq.'ITERATIVECHOLESKY') then
isolver=3
elseif(solver(1:3).eq.'SGI') then
isolver=4
elseif(solver(1:5).eq.'TAUCS') then
isolver=5
elseif(solver(1:7).eq.'PARDISO') then
isolver=7
else
write(*,*) '*WARNING in heattransfers: unknown solver;'
write(*,*) ' the default solver is used'
endif
!
call getnewline(inpc,textpart,istat,n,key,iline,ipol,inl,
& ipoinp,inp,ipoinpc)
if((istat.lt.0).or.(key.eq.1)) then
if(iperturb.ge.2) then
write(*,*) '*WARNING in heattransfers: a nonlinear geomet
&ric analysis is requested'
write(*,*) ' but no time increment nor step is sp
&ecified'
write(*,*) ' the defaults (1,1) are used'
tinc=1.d0
tper=1.d0
tmin=1.d-5
tmax=1.d+30
endif
if(timereset)ttime=ttime-tper
return
endif
!
read(textpart(1)(1:20),'(f20.0)',iostat=istat) tinc
if(istat.gt.0) call inputerror(inpc,ipoinpc,iline,
&"*HEAT TRANSFER%")
read(textpart(2)(1:20),'(f20.0)',iostat=istat) tper
if(istat.gt.0) call inputerror(inpc,ipoinpc,iline,
&"*HEAT TRANSFER%")
read(textpart(3)(1:20),'(f20.0)',iostat=istat) tmin
if(istat.gt.0) call inputerror(inpc,ipoinpc,iline,
&"*HEAT TRANSFER%")
read(textpart(4)(1:20),'(f20.0)',iostat=istat) tmax
if(istat.gt.0) call inputerror(inpc,ipoinpc,iline,
&"*HEAT TRANSFER%")
!
if(tinc.le.0.d0) then
write(*,*) '*ERROR in heattransfers: initial increment size
&is negative'
endif
if(tper.le.0.d0) then
write(*,*) '*ERROR in heattransfers: step size is negative'
endif
if(tinc.gt.tper) then
write(*,*) '*ERROR in heattransfers: initial increment size
&exceeds step size'
endif
!
if(idrct.ne.1) then
c if(dabs(tmin).lt.1.d-10) then
c tmin=min(tinc,1.d-5*tper)
if(dabs(tmin).lt.1.d-6*tper) then
tmin=min(tinc,1.d-6*tper)
endif
if(dabs(tmax).lt.1.d-10) then
tmax=1.d+30
endif
endif
elseif(nmethod.eq.2) then
!
! thermal eigenmode analysis
!
iperturb=0
!
call getnewline(inpc,textpart,istat,n,key,iline,ipol,inl,
& ipoinp,inp,ipoinpc)
if((istat.lt.0).or.(key.eq.1)) then
write(*,*)'*ERROR in heattransfers: definition not complete'
write(*,*) ' '
call inputerror(inpc,ipoinpc,iline,
&"*HEAT TRANSFER%")
call exit(201)
endif
read(textpart(1)(1:10),'(i10)',iostat=istat) nev
if(istat.gt.0) call inputerror(inpc,ipoinpc,iline,
&"*HEAT TRANSFER%")
if(nev.le.0) then
write(*,*) '*ERROR in frequencies: less than 1 eigenvalue re
&quested'
call exit(201)
endif
tol=1.d-2
ncv=4*nev
ncv=ncv+nev
mxiter=1000
if(textpart(2)(1:1).ne.' ') then
read(textpart(2)(1:20),'(f20.0)',iostat=istat) fmin
if(istat.gt.0) call inputerror(inpc,ipoinpc,iline,
&"*HEAT TRANSFER%")
endif
if(textpart(3)(1:1).ne.' ') then
read(textpart(3)(1:20),'(f20.0)',iostat=istat) fmax
if(istat.gt.0) call inputerror(inpc,ipoinpc,iline,
&"*HEAT TRANSFER%")
endif
!
mei(1)=nev
mei(2)=ncv
mei(3)=mxiter
fei(1)=tol
fei(2)=fmin
fei(3)=fmax
else
!
! modal dynamic analysis for variables which satisfy the
! Helmholtz equation
!
call getnewline(inpc,textpart,istat,n,key,iline,ipol,inl,
& ipoinp,inp,ipoinpc)
if((istat.lt.0).or.(key.eq.1)) then
write(*,*)'*ERROR in heattransfers: definition not complete'
write(*,*) ' '
call inputerror(inpc,ipoinpc,iline,
&"*HEAT TRANSFER%")
call exit(201)
endif
read(textpart(1)(1:20),'(f20.0)',iostat=istat) tinc
if(istat.gt.0) call inputerror(inpc,ipoinpc,iline,
&"*HEAT TRANSFER%")
read(textpart(2)(1:20),'(f20.0)',iostat=istat) tper
if(istat.gt.0) call inputerror(inpc,ipoinpc,iline,
&"*HEAT TRANSFER%")
endif
!
if(timereset)ttime=ttime-tper
!
call getnewline(inpc,textpart,istat,n,key,iline,ipol,inl,
& ipoinp,inp,ipoinpc)
!
return
end
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