Environmental Engineering Reference
In-Depth Information
kg
−1
]
h
enthalpy
[J
m
−2
K
−1
]
h
heat transfer coefficient
[W
kg
−1
]
h
fg
heat of vaporization
[J
[m
2
s
−1
]
K
evaporation constant
[s
−1
]
k
reaction rate coefficient
s
−1
]
k
g
mass transfer coefficient
[m
m
mass
[kg]
s
−1
]
m
mass flow rate
[kg
_
r
radial coordinate
[m]
r
p
particle radius
[m]
Re
Reynolds number
[
-
]
m
−3
s
−1
]
s
source term
[kg
Sc
Schmidt number
[
-
]
Sh
Sherwood number
[
-
]
T
temperature
[K]
Th
Thiele modulus
[
-
]
t
time
[s]
s
−1
]
u, v
velocity
[m
[m
3
]
V
volume
Y
i
mass fraction of species i
[
-
]
ε
porosity
[
-
]
m
−1
K
−1
]
λ
thermal conductivity
[W
[m
2
s
−1
]
ν
kinematic viscosity
m
−3
]
ρ
density
[kg
τ
tortuosity
[
-
]
ξ
normalized radial coordinate
[
-
]
ψ
normalized concentration
[
-
]
Subscripts
0
initial value
1,2
integration constant numbers
boil
at boiling condition
d
diameter, droplet
eff
effective
f
flame
fg
evaporation
g
gas
m
mass
p
particle
q
evaporation
r
in radial direction
s
at the surface
at infinity
∞
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