Predefined Variables
This section lists some predefined variables that are available to evaluate heat fluxes, sources, and integral quantities used in energy balance. All the variable names begin with the physics interface name (the prefix). By default the Heat Transfer interface prefix is
ht,
and the Heat Transfer in Shells interface prefix is
htlsh
. As an example, you can access the variable named
tflux
using
ht.tflux
(as long as the physics interface is named
ht
).
Table 3-1:
Heat Transfer Predefined Variables
Variable
Name
Geometric Entity level
dEiInt
Total Accumulated Heat Rate
Global
ntfluxInt
Total Net Heat Rate
Global
QInt
Total Heat Source
Global
WnsInt
Total Fluid Losses
Global
dEi0Int
Total Accumulated Energy Rate
Global
ntefluxInt
Total Net Energy Rate
Global
tflux
Total Heat Flux (Heat Transfer interface)
Domains, boundaries
dflux
Conductive Heat Flux (Heat Transfer interface)
Domains, boundaries
cflux
Convective Heat Flux (Heat Transfer interface)
Domains, boundaries
turbflux
Turbulent Heat Flux (Heat Transfer interface)
Domains, boundaries
teflux
Total Energy Flux (Heat Transfer interface)
Domains, boundaries
not applicable
Radiative Heat Flux (Heat Transfer interface)
Domains
rflux_u
rflux_d
rflux_z
Radiative Out-of-Plane Heat Flux (Heat Transfer interface)
Out-of-plane domains (1D and 2D), boundaries
q0_u
q0_d
q0_z
Out-of-Plane Inward Heat Flux (Heat Transfer interface)
Out-of-plane domains (1D and 2D)
h
Heat transfer coefficient (see
The Heat Transfer Coefficients
)
Exterior boundaries
ntflux
Normal Total Heat Flux (Heat Transfer interface)
Boundaries
ndflux
Normal Conductive Heat Flux (Heat Transfer interface)
Boundaries
ncflux
Normal Convective Heat Flux (Heat Transfer interface)
Boundaries
nteflux
Normal Total Energy Flux (Heat Transfer interface)
Boundaries
ndflux_u
Internal Normal Conductive Heat Flux, Upside (Heat Transfer interface)
Interior boundaries
ndflux_d
Internal Normal Conductive Heat Flux, Downside (Heat Transfer interface)
Interior boundaries
ncflux_u
Internal Normal Convective Heat Flux, Upside (Heat Transfer interface)
Interior boundaries
ncflux_d
Internal Normal Convective Heat Flux, Downside (Heat Transfer interface)
Interior boundaries
ntflux_u
Internal Normal Total Heat Flux, Upside (Heat Transfer interface)
Interior boundaries
ntflux_d
Internal Normal Total Heat Flux, Downside (Heat Transfer interface)
Interior boundaries
nteflux_u
Internal Normal Total Energy Flux, Upside (Heat Transfer interface)
Interior boundaries
nteflux_d
Internal Normal Total Energy Flux, Downside (Heat Transfer interface)
Interior boundaries
q0
Inward Heat Flux (Heat Transfer interface)
Boundaries
rflux
Radiative Heat Flux (Heat Transfer interface)
Boundaries
Qtot
Domain Heat Sources
Domains
Qbtot
Boundary Heat Sources
Boundaries
Qltot
Line heat source (
Line and Point Heat Sources
)
Edges, Points (2D, 2D axial symmetry)
Qptot
Point heat source (
Line and Point Heat Sources
)
Points
alpha
Damage indicator (see
Theory for Bioheat Transfer
)
Domains
alphanecr
Instant tissue necrosis indicator (see
Theory for Bioheat Transfer
)
Domains
theta_d
Fraction of damage (see
Theory for Bioheat Transfer
)
Domains
theta_d_sm
Fraction of total damage (see
Theory for Bioheat Transfer
)
Domains
T_dp
Dew Point Temperature
Domains
T_eq
Equivalent Temperature
Domains
psat
Saturation Pressure
Domains
phi
Relative Humidity
Domains
Lv
Latent Heat of Evaporation
Domains
Some of these variables are only available with the Heat Transfer Module (
rflux_u
,
rflux_d
,
rflux_z
,
q0_u
,
q0_d
, and
q0_z
), or when either the CFD Module or the Heat Transfer Module is added (
rflux
and
turbflux
).