Critical phenomena and waves in gas-liquid systems |
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Authors: | S S Kutateladze and V E Nakoryakov |
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Institution: | (1) Institute of Thermophysics, Siberian Branch of the USSR Academy of Sciences, 630090 Novosibirsk-90, USSR |
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Abstract: | The results of the hydraulic studies of gas-liquid media, wave processes in two-phase media and critical phenomena are described. Some methodological foundations to describe these media and methods to obtain the basic similarity criteria for the hydraulics and gas-dynamics of bubble suspensions are discussed. A detailed consideration is given for the phase transition processes on interfaces and the interface stability. A relation has been revealed between the wave and critical phenomena in two-phase systems.Nomenclature
a
thermal diffusivity
- Ar
Archimedes number
-
B
gas constant
-
C
heat capacity
-
C
p
heat capacity at constant pressure
-
C
v
heat capacity at constant volume
-
c
0
acoustic velocity in the mixture
-
c
l
acoustic velocity in the liquid
-
C
f
flow resistance coefficient
-
G
mass rate of flow
-
g
gravitational acceleration
-
L
latent heat of evaporation
-
l
initial perturbation width
- M
Mach number
- Nu
Nusselt number
-
P
pressure
- Pr
Prandtl number
-
R
bubble radius
- (3 P
0/R
0
2
f
)–1
bubble resonance frequency square
-
T
temperature
-
U
medium motion velocity
-
W
heavy phase velocity
-
W
light phase velocity
- We
Weber number
-
heat release coefficient
-
dispersion coefficient
-
void fraction
-
adiabatic index
-
film thickness
-
dimensionless film thickness
-
kinematic viscosity coefficient
-
dynamical viscosity coefficient
-
dissipation coefficient in the mixture
-
dispersion parameter
-
f
liquid phase density
-
![rgr](/content/g01j22v536615631/xxlarge961.gif)
light phase density
-
heat conductivity
-
surface tension
-
frequency,
0
2
=3 P
0/
f
R
0
2 |
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Keywords: | |
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