Gas EBU examples

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Gas EBU examples

# Local variables to be added

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

# Initialization and finalization

Initialization and finalization is similar to that of the base examples

# Example 1

Definition of a burned gas inlet (pilot flame) for each face of colour 11

call getfbr('11', nlelt, lstelt)
!==========
do ilelt = 1, nlelt
ifac = lstelt(ilelt)
! Type of pre-defined boundary condidition (see above)
itypfb(ifac) = ientre
! Zone number (arbitrary number between 1 and n)
izone = 1
! Allocation of the actual face to the zone
izfppp(ifac) = izone
! Indicating the inlet as a burned gas inlet
ientgb(izone) = 1
! The incoming burned gas flow refers to:
! a) a massflow rate -> iqimp() = 1
iqimp(izone) = 0
qimp(izone) = zero
!
! b) an inlet velocity -> iqimp() = 0
rcodcl(ifac,iu,1) = 0.d0
rcodcl(ifac,iv,1) = 0.d0
rcodcl(ifac,iw,1) = 21.47d0
! ATTENTION: If iqimp() = 1 the direction vector of the massfow has
! to be given here.
!
! Mean Mixture Fraction at Inlet
fment(izone) = 1.d0*fs(1)
! Inlet Temperature in K
tkent(izone) = 2000.d0
! 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
call keenin &
!==========
( uref2, xintur(izone), dh(izone), cmu, xkappa, &
xkent, xeent )
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
enddo

# Example 2

Definition of an unburned gas inlet for each face of colour 12

call getfbr('12', nlelt, lstelt)
!==========
do ilelt = 1, nlelt
ifac = lstelt(ilelt)
! Type of pre-defined boundary condidition (see above)
itypfb(ifac) = ientre
! Zone number (arbitrary number between 1 and n)
izone = 2
! Allocation of the actual face to the zone
izfppp(ifac) = izone
! Indicating the inlet as an unburned gas inlet
ientgf(izone) = 1
! The incoming unburned gas flow refers to:
! a) a massflow rate -> iqimp() = 1
iqimp(izone) = 0
qimp(izone) = zero
!
! b) an inlet velocity -> iqimp() = 0
rcodcl(ifac,iu,1) = 60.d0
rcodcl(ifac,iv,1) = 0.d0
rcodcl(ifac,iw,1) = 0.d0
! ATTENTION: If iqimp() = 1 the direction vector of the massfow has
! to be given here.
! Mean Mixture Fraction at Inlet
fment(izone) = 8.d-1*fs(1)
! Inlet Temperature in K
tkent(izone) = 600.d0
! Boundary Conditions of Turbulence
icalke(izone) = 1
!
! - If ICALKE = 1 the boundary conditions of turbulence at
! the inlet refer to both, a hydraulic diameter and a
! reference velocity.
!
dh(izone) = 0.08d0
!
! - If ICALKE = 2 the boundary conditions of turbulence at
! the inlet refer to a turbulence intensity.
!
xintur(izone) = 0.1d0
enddo

# Example 3

Definition of a wall for each face of colour 51 and 5

call getfbr('51 or 5', nlelt, lstelt)
!==========
do ilelt = 1, nlelt
ifac = lstelt(ilelt)
! Type de condition aux limites pour les variables standard
itypfb(ifac) = iparoi
! Zone number (arbitrary number between 1 and n)
izone = 4
! Allocation of the actual face to the zone
izfppp(ifac) = izone
enddo

# Example 4

Definition of an exit for each face of colour 91 and 9

call getfbr('91 or 9', nlelt, lstelt)
!==========
do ilelt = 1, nlelt
ifac = lstelt(ilelt)
! Type de condition aux limites pour les variables standard
itypfb(ifac) = isolib
! Zone number (arbitrary number between 1 and n)
izone = 5
! Allocation of the actual face to the zone 9
izfppp(ifac) = izone
enddo

# Example 5

Definition of symmetric boundary conditions for each face of colour 41 and 4.

call getfbr('41 or 4', nlelt, lstelt)
!==========
do ilelt = 1, nlelt
ifac = lstelt(ilelt)
! Type de condition aux limites pour les variables standard
itypfb(ifac) = isymet
! Zone number (arbitrary number between 1 and n)
izone = 6
! Allocation of the actual face to the zonec
izfppp(ifac) = izone
enddo