Abstract: | The application of the methods of laser and holographic interferometry to the problems of measuring evaporation rates is examined. Mass transfer accompanying evaporation in the region of extradiffusion monitoring is studied.Notation jv
specific mass flux of the vapor, kg/(m2·sec)
- c
coefficient of condensation
- v
coefficient of evaporation
- D
coefficient of diffusion
- m2/sec,
wetting angle
- R
radius of the vessel, m
-
time, sec
- h
height of the segment, m
-
wavelength of the laser radiation, m
- N
order of the interference fringe or the number of fringes passing through a given point
-
density of the matter, kg/m3
-
length of the cell with the liquid of interest, m
- T
temperature, K
- n
refractive index of the medium
- m
mass
- kg, V
volume of the spheroidal segment, m3
- liq and g
molar mass, kg/mole
- C0 and Cp
concentration of vapor in the gas, kg/m3
- a and b
semiaxes of the spheroid, m
- e
ellipsoidal coordinate of a point on the surface, m2
- c/ n
derivative along the normal
- r
coordinate of a point on the surface of evaporation, m
- n
change in the refractive index of the medium
Indices st
standard liquid
- liq
liquid
- g
gas
- 0
starting state
- p
equilibrium pressure
Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 55, No. 4, pp. 605–611, October, 1988. |