
119Air Injection in Chutes
© 2010 Taylor & Francis Group, LLC
vS
ch ch
βρ
111
=− ⋅ ;
vS
ch ch
βρ
222
=⋅ , (3.217)
where J is the volumetric evaporation rate, kg/(s·m
3
). Respectively, for an impulse
d
vvS Sa Sk
ch ch Tchm
βρ βρ βψ
1 111 11 1
121
=−
*
Jv S
2
ρ− , (3.218)
vvS Sg Sk
ch ch xchm
βρ βρρβψ
2 222 2201
1
=−+
()
*
221 2
2
ρ
PS
Jv S
ch
ch
βλ
ρ
22
2
2
. (3.219)
Assuming that the volume concentration of the material is small (β
1
<< 1; β
2
≈ 1),
the last correlation with Equation 3.217 can be written as (S
ch
- const):
dp
gk
v
xm
=−+
−()
*
ρρ βψ ρ
20 1
1212
2
2
ρρ
2
Jv v
. (3.220)
The mass transport equation of the gaseous ...