/usr/share/code_saturne/user_examples/cs_user_extra_operations-nusselt_calculation.f90 is in code-saturne-data 4.2.0+repack-1build1.
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! Code_Saturne version 4.2.0
! --------------------------
! This file is part of Code_Saturne, a general-purpose CFD tool.
!
! Copyright (C) 1998-2013 EDF S.A.
!
! 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.
!-------------------------------------------------------------------------------
!===============================================================================
! Purpose:
! -------
!> \file cs_user_extra_operations-nusselt_calculation.f90
!>
!> \brief This function is called at the end of each time step, and has a very
!> general purpose
!> (i.e. anything that does not have another dedicated user subroutine)
!>
!-------------------------------------------------------------------------------
!-------------------------------------------------------------------------------
! Arguments
!______________________________________________________________________________.
! mode name role
!______________________________________________________________________________!
!> \param[in] nvar total number of variables
!> \param[in] nscal total number of scalars
!> \param[in] dt time step (per cell)
!_______________________________________________________________________________
subroutine cs_f_user_extra_operations &
( nvar , nscal , &
dt )
!===============================================================================
!===============================================================================
! Module files
!===============================================================================
use paramx
use dimens, only: ndimfb
use pointe
use numvar
use optcal
use cstphy
use cstnum
use entsor
use lagpar
use lagran
use lagdim
use parall
use period
use ppppar
use ppthch
use ppincl
use mesh
use field
use field_operator
!===============================================================================
implicit none
! Arguments
integer nvar , nscal
double precision dt(ncelet)
!< [loc_var_f_user]
! Local variables
integer iscal, ivar, iortho, iprev
integer inc, iccocg, ilelt, irangv
integer ifac, iel, npoint, iel1, irang1, ii, iun, impout, nlelt, neltg
double precision diipbx, diipby, diipbz
double precision xtbulk, xubulk, xyz(3), xtb, xub, tfac, lambda, xab
character*19 namfil
integer, allocatable, dimension(:) :: lstelt
double precision, dimension(:), pointer :: coefap, coefbp, cofafp
double precision, allocatable, dimension(:,:) :: grad
double precision, allocatable, dimension(:) :: treco,treglo,treloc
double precision, allocatable, dimension(:) :: xnusselt
double precision, allocatable, dimension(:) :: xabs, xabsg
double precision, dimension(:,:), pointer :: vel
double precision, dimension(:), pointer :: cvar, viscl
double precision :: height, prandtl, qwall
parameter (height = 1.0d0)
parameter (prandtl = 1.0d0)
parameter (qwall = 1.0d0)
!< [loc_var_f_user]
!***********************************************************************
! Calculation of the Nusselt number
!< [nusselt_number]
if (ntcabs.eq.ntmabs) then
allocate(lstelt(max(ncel,nfac,nfabor)))
call field_get_val_v(ivarfl(iu), vel)
iscal = iscalt ! temperature scalar number
ivar = isca(iscal) ! temperature variable number
call field_get_val_s(iprpfl(iviscl), viscl)
call field_get_coefa_s(ivarfl(ivar), coefap)
call field_get_coefb_s(ivarfl(ivar), coefbp)
call field_get_val_s(ivarfl(ivar), cvar)
!< [nusselt_number]
! --> Compute value reconstructed at I' for boundary faces
!< [compute_nusselt]
allocate(treco(nfabor))
iortho = 0
!< [compute_nusselt]
! --> General case (for non-orthogonal meshes)
!< [gen_nusselt]
if (iortho.eq.0) then
!< [gen_nusselt]
! Allocate a work array for the gradient calculation
!< [allocate_nusselt]
allocate(grad(3,ncelet))
!< [allocate_nusselt]
! - Compute gradient
!< [gradient_nusselt]
iprev = 0
inc = 1
iccocg = 1
call field_gradient_scalar(ivarfl(ivar), iprev, imrgra, inc, &
iccocg, &
grad)
!< [gradient_nusselt]
! - Compute reconstructed value in boundary cells
!< [value_nusselt]
do ifac = 1, nfabor
iel = ifabor(ifac)
diipbx = diipb(1,ifac)
diipby = diipb(2,ifac)
diipbz = diipb(3,ifac)
treco(ifac) = coefap(ifac) + coefbp(ifac)*(cvar(iel) &
+ diipbx*grad(1,iel) &
+ diipby*grad(2,iel) &
+ diipbz*grad(3,iel))
enddo
!< [value_nusselt]
! Free memory
!< [free_nusselt]
deallocate(grad)
!< [free_nusselt]
! --> Case of orthogonal meshes
!< [else_nusselt]
else
!< [else_nusselt]
! Compute reconstructed value
! (here, we assign the non-reconstructed value)
!< [value_ortho_nusselt]
do ifac = 1, nfabor
iel = ifabor(ifac)
treco(ifac) = coefap(ifac) + coefbp(ifac)*cvar(iel)
enddo
endif
impout = impusr(1)
if (irangp.le.0) then
open(file="Nusselt.dat",unit=impout)
endif
call getfbr('normal[0,-1,0,0.1] and y < 0.01',nlelt,lstelt)
neltg = nlelt
if (irangp.ge.0) then
call parcpt(neltg)
endif
allocate(xabs(nlelt))
allocate(treloc(nlelt))
allocate(xnusselt(neltg))
if (irangp.ge.0) then
allocate(xabsg(neltg))
allocate(treglo(neltg))
endif
do ilelt = 1, nlelt
ifac = lstelt(ilelt)
xabs(ilelt) = cdgfbo(1,ifac)
treloc(ilelt) = treco(ifac)
enddo
if (irangp.ge.0) then
call paragv(nlelt, neltg, xabs, xabsg)
call paragv(nlelt, neltg, treloc, treglo)
endif
do ilelt = 1,neltg
!< [value_ortho_nusselt]
! Calculation of the bulk temperature
!< [bulk_nusselt]
if (irangp.ge.0) then
xab = xabsg(ilelt)
else
xab = xabs(ilelt)
endif
xtbulk = 0.0d0
xubulk = 0.0d0
npoint = 200
iel1 = -999
do ii = 1, npoint
xyz(1) = xab
xyz(2) = float(ii-1)/float(npoint-1)
xyz(3) = 0.d0
call findpt(ncelet, ncel, xyzcen, xyz(1), xyz(2), xyz(3), iel, irangv)
!==========
if ((iel.ne.iel1).or.(irangv.ne.irang1)) then
iel1 = iel
irang1 = irangv
if (irangp.eq.irangv) then
xtb = volume(iel)*cvar(iel)*vel(1,iel)
xub = volume(iel)*vel(1,iel)
xtbulk = xtbulk + xtb
xubulk = xubulk + xub
lambda = cp0 * viscl(iel) / prandtl
endif
endif
enddo
if (irangp.ge.0) then
iun = 1
call parall_bcast_r(irangv, lambda)
call parsom(xtbulk)
call parsom(xubulk)
endif
xtbulk = xtbulk/xubulk
if (irangp.ge.0) then
tfac = treglo(ilelt)
else
tfac = treloc(ilelt)
endif
xnusselt(ilelt) = qwall * 2.d0 * height / lambda / (tfac - xtbulk)
enddo
if (irangp.eq.-1) then
do ii = 1, neltg
write(impout,'(2E17.9)') xabs(ii)*10, xnusselt(ii)/(0.023d0*30000.d0**(0.8d0)*0.71d0**(0.4d0))
enddo
endif
if (irangp.eq.0) then
call sortc2(xabsg, xnusselt, neltg)
do ii = 1, neltg
write(impout,'(2E17.9)') xabsg(ii)*10, xnusselt(ii)/(0.023d0*30000.d0**(0.8d0)*0.71d0**(0.4d0))
enddo
endif
close(impout)
deallocate(treco)
deallocate(xabs)
deallocate(xnusselt)
deallocate(lstelt)
deallocate(treloc)
if (irangp.ge.0) then
deallocate(xabsg)
deallocate(treglo)
endif
endif
return
end subroutine cs_f_user_extra_operations
!< [bulk_nusselt]
subroutine sortc2(tab1, tab2, n)
!================
!< [loc_var_sortc2]
implicit none
integer n
double precision tab1(n), tab2(n)
integer ns, ii, jj, kk
double precision tabmin, t2
!< [loc_var_sortc2]
!< [body_sortc2]
ns = 1
do ii = 1, n-1
tabmin = 1.d20
kk = 0
do jj = ns,n
if (tabmin.gt.tab1(jj)) then
tabmin = tab1(jj)
kk = jj
endif
enddo
t2 = tab2(kk)
tab1(kk) = tab1(ns)
tab2(kk) = tab2(ns)
tab2(ns) = t2
tab1(ns) = tabmin
ns = ns + 1
enddo
return
end subroutine sortc2
!< [body_sortc2]
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