Such expenses are related to the necessity of overcoming the hydrostatic pressures by the
gas flows and the formation of the interphase surface. In order to determine the first
component, we use the transformed Clapeyron equation of the ideal gas:
1
2
2
1
2
2
1
1
,
V
V
р
р
or
W
V
р
V
р
=
=
,
(15)
where p
1
and p
2
are hydrostatic pressures in the zones of gas flow delivery in
comparable devices, Pa; V
1
and V
2
are, respectively, volumetric flows of the gas phase,
m
3
/s.
Since the condition (15) assumes the equality of the incoming gas flows,
const
w
red
=
gives us:
2
2
1
1
;
f
w
V
f
w
V
red
red
=
=
(16)
which leads to
2
1
2
1
1
2
1
2
;
f
f
V
V
f
f
V
V
=
=
.
(17)
These equations allow us to formulate the condition of simulating hydrodynamic
modes:
const
w
if
const
V
р
V
р
red
=
=
=
2
2
1
1
.
(18)
The energy costs associated with the formation of the interphase surface F are also
related to the gas retention capacity, since:
А = σF,
(19)
where A is the work of interphase surface formation, J; σ is the coefficient of surface
tension, J/m
2
.
With the other conditions being the same, the interphase surface is a function of gas
retention capacity:
F = F(u)
thus
А = σF(u).
(20)
The formation of the interphase surface occurs in the contact zone between the liquid
phase and the air inflow with the corresponding energy transformation.
At the same time, a highly turbulent mode is created in the local zone based on
complete absorption of the kinetic energy of the flow with the power:
2
2
w
V
N
=
, W
(21)
where w is the rate of gas flow contact with the liquid phase, m/s; ρ is the specific
mass of the gas flow, kg/m
3
.
The result of this interaction is the formation of a dispersed gas phase accompanied
by dissipative phenomena. If we ignore the latter and assume that the power of the
interphase surface formation and the power of the inflow are approximately equal, then
this could be the basis for estimating the speed of its synthesis. From the moment of gas
bubble formation, the law of Archimedes begins to operate due to the creation of a driving
factor:
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