7.0
general documentation
Pulverized coal

Local variables to be added

integer ifac, ii
integer izone
integer icha, iclapc
integer ilelt, nlelt
double precision uref2, d2s3
double precision xkent, xeent
integer, allocatable, dimension(:) :: lstelt

Initialization and finalization

Initialization and finalization is similar to that of the base examples

Example 1

BOUNDARY FACE corresponding to AIR INLET, e.g. : secondary or tertiary air.

call getfbr('12', nlelt, lstelt)
!==========
do ilelt = 1, nlelt
ifac = lstelt(ilelt)
! Kind of boundary conditions for standard variables
itypfb(ifac) = ientre
! zone's number (from 1 to n)
izone = 1
! - Allocation of the zone's number to the face
izfppp(ifac) = izone
! - For theses inlet faces, mass flux is fixed
ientat(izone) = 1
iqimp(izone) = 1
! - Oxidizer's number (1 to 3)
inmoxy(izone) = 1
! - Oxidizer mass flow rate in kg/s
qimpat(izone) = 1.46d-03
! - Oxidizer's Temperature in K
timpat(izone) = 400.d0 + tkelvi
! - The color 12 becomes an fixed flow rate inlet
! The user gives speed vector direction
! (speed vector norm is irrelevent)
rcodcl(ifac,iu,1) = 0.d0
rcodcl(ifac,iv,1) = 0.d0
rcodcl(ifac,iw,1) = 5.d0
! ------ Turbulence treatment
! Boundary conditions of turbulence
icalke(izone) = 1
!
! - If ICALKE = 0 the boundary conditions of turbulence at
! the inlet are calculated as follows:
if(icalke(izone).eq.0) then
uref2 = rcodcl(ifac,iu,1)**2 &
+rcodcl(ifac,iv,1)**2 &
+rcodcl(ifac,iw,1)**2
uref2 = max(uref2,1.d-12)
xkent = epzero
xeent = epzero
if (itytur.eq.2) then
rcodcl(ifac,ik,1) = xkent
rcodcl(ifac,iep,1) = xeent
elseif(itytur.eq.3) then
rcodcl(ifac,ir11,1) = d2s3*xkent
rcodcl(ifac,ir22,1) = d2s3*xkent
rcodcl(ifac,ir33,1) = d2s3*xkent
rcodcl(ifac,ir12,1) = 0.d0
rcodcl(ifac,ir13,1) = 0.d0
rcodcl(ifac,ir23,1) = 0.d0
rcodcl(ifac,iep,1) = xeent
elseif (iturb.eq.50) then
rcodcl(ifac,ik,1) = xkent
rcodcl(ifac,iep,1) = xeent
rcodcl(ifac,iphi,1) = d2s3
rcodcl(ifac,ifb,1) = 0.d0
elseif (iturb.eq.60) then
rcodcl(ifac,ik,1) = xkent
rcodcl(ifac,iomg,1) = xeent/cmu/xkent
elseif (iturb.eq.70) then
rcodcl(ifac,inusa,1) = cmu*xkent**2/xeent
endif
endif
!
! - If ICALKE = 1 the boundary conditions of turbulence at
! the inlet refer to both, a hydraulic diameter and a
! reference velocity.
!
dh(izone) = 0.032d0
!
! - If ICALKE = 2 the boundary conditions of turbulence at
! the inlet refer to a turbulence intensity.
!
xintur(izone) = 0.d0
! ------ Automatic treatment of scalars for extended physic
! ------ treatment of user's scalars
if ( (nscal-nscapp).gt.0 ) then
do ii = 1, (nscal-nscapp)
rcodcl(ifac,isca(ii),1) = 1.d0
enddo
endif
enddo

Example 2

BOUNDARY FACE for pulverised COAL & primary air INLET.

call getfbr('11', nlelt, lstelt)
!==========
do ilelt = 1, nlelt
ifac = lstelt(ilelt)
! Kind of boundary conditions for standard variables
itypfb(ifac) = ientre
! zone's number (from 1 to n)
izone = 2
! - Allocation of the zone's number to the face
izfppp(ifac) = izone
! - For theses inlet faces, mass flux is fixed
ientcp(izone) = 1
iqimp(izone) = 1
! - Oxidizer's number (1 to 3)
inmoxy(izone) = 1
! - Oxidizer's mass flow rate in kg/s
qimpat(izone) = 1.46d-03
! - Oxidizer's Temperature in K
timpat(izone) = 800.d0 + tkelvi
! Coal inlet, initialization
do icha = 1, ncharm
qimpcp(izone,icha) = zero
timpcp(izone,icha) = zero
do iclapc = 1, ncpcmx
distch(izone,icha,iclapc) = zero
enddo
enddo
! Code_Saturne deals with NCHA different coals (component of blend)
! every coal is described by NCLPCH(icha) class of particles
! (each of them described by an inlet diameter)
!
! - Treatment for the first coal
icha = 1
! - Coal mass flow rate in kg/s
qimpcp(izone,icha) = 1.46d-4
! - PERCENTAGE mass fraction of each granulometric class
do iclapc = 1, nclpch(icha)
distch(izone,icha,iclapc) = 100.d0/dble(nclpch(icha))
enddo
! - Inlet temperature for coal & primary air
timpcp(izone,icha) = 800.d0 + tkelvi
! - The color 11 becomes an fixed flow rate inlet
! The user gives speed vector direction
! (speed vector norm is irrelevent)
rcodcl(ifac,iu,1) = 0.d0
rcodcl(ifac,iv,1) = 0.d0
rcodcl(ifac,iw,1) = 5.d0
! PPl
! ------ Traitement de la turbulence
! La turbulence est calculee par defaut si ICALKE different de 0
! - soit a partir du diametre hydraulique, d'une vitesse
! de reference adaptes a l'entree courante si ICALKE = 1
! - soit a partir du diametre hydraulique, d'une vitesse
! de reference et de l'intensite turvulente
! adaptes a l'entree courante si ICALKE = 2
! Choix pour le calcul automatique ICALKE = 1 ou 2
icalke(izone) = 1
! Saisie des donnees
dh(izone) = 0.1d0
xintur(izone) = 0.1d0
! PPl
!
enddo

Example 3

The color 15 becomes a WALL.

call getfbr('15', nlelt, lstelt)
!==========
do ilelt = 1, nlelt
ifac = lstelt(ilelt)
! WALL : NUL MASS FLUX (PRESSURE FLUX is zero valued)
! FRICTION FOR SPEED (& TURBULENCE)
! NUL SCALAR FLUX
! Kind of boundary conditions for standard variables
itypfb(ifac) = iparoi
! zone's number (from 1 to n)
izone = 3
! - Allocation of the zone's number to the face
izfppp(ifac) = izone
enddo

Example 4

The color 19 becomes an OUTLET.

call getfbr('19', nlelt, lstelt)
!==========
do ilelt = 1, nlelt
ifac = lstelt(ilelt)
! OUTLET : NUL FLUX for SPEED & SCALARS, FIXED PRESSURE
! Kind of boundary conditions for standard variables
itypfb(ifac) = isolib
! zone's number (from 1 to n)
izone = 4
! - Allocation of the zone's number to the face
izfppp(ifac) = izone
enddo

Example 5

The color 14 becomes a symmetry plane.

call getfbr('14 or 4', nlelt, lstelt)
!==========
do ilelt = 1, nlelt
ifac = lstelt(ilelt)
! SYMETRIES
! Kind of boundary conditions for standard variables
itypfb(ifac) = isymet
! zone's number (from 1 to n)
izone = 5
! - Allocation of the zone's number to the face
izfppp(ifac) = izone
enddo