Effect of the initial velocity of an aerosol on its trajectory in a curving gas stream

On the basis of an experimental and theoretical investigation, the authors analyze the effect of the initial velocity of an aerosol on its subsequent motion.     

Calculation of heat transfer to a concave surface in a free-molecular gas stream

The author describes a method of calculating the relaxation process of multiple reflection of a gas stream by a nonconvex surface, allowing for heat transfer and aerodynamic characteristics.     

Qualitative motion of a liquid in an accelerating gas stream

Experimental data are examined on the interaction of liquid drops with the gas stream in a Venturi scrubber, the most promising available equipment.     

Influence of free convection on the rate of aerosol precipitation from a laminar gas stream

Results of experiments and computational estimates are presented which show that turbulization of a stream under the influence of free convection can substantially intensify aerosol deposition on channel walls from a laminar gas stream.Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 33, No. 1, pp. 44–49, July, 1977.     

Calculation of gas motion and heat transfer at the periphery of a cyclone stream

Methods of generalizing test data and calculating friction and convective heat exchange at the lateral surface of a cyclone chamber are discussed on the basis of an analysis of flow at the boundary of the wall region.Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 51, No. 6, pp. 902–908, December, 1986.     

Validity of the quasihomogeneous approximation for an analysis of radiative heating in an aerosol stream

The thermal resistances in a stream are analyzed and the validity limits of the quasihomogeneous approximation are established, on the basis of information about the temperature of the phases during radiative heating.Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 24, No. 6, pp. 977–983, June, 1973.     

Breakaway of a liquid by a gas stream at an interface containing a grid

It is shown that in a system comprised of a gas stream, a liquid, and a grid, breakaway of a drop of liquid by the gas stream occurs under certain conditions. This paper determines the characteristic and dimensions at which drop breakaway will begin for a given gas velocity.Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 33, No. 3, pp. 393–398, September, 1977.     

Sublimation of a thin plate in a gas stream

The laminar boundary layer on a sublimating thin plate is examined.     

The problem of the burning of an electric arc in a stream of gas

A one-dimensional heat-conduction equation is analyzed for the positive column of an arc discharge in a lateral gas flow (VJ). Two discharge burning regimes are found for the same parameters (E and V). The critical gas flow rate at which disruption of the burning occurs is determined. The volt-ampere characteristics of the discharge are constructed.     

Analysis of the spontaneous ignition of a turbulent gas jet in an oxidizer stream

An approximate method is proposed for analyzing the spontaneous ignition of a turbulent gas jet in an oxidizer stream. The results are compared with known test data.Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 22, No. 3, pp. 480–487, March 1972.     

The coagulation of aerosol particles in turbulent flow

A statistical model is given for determining the kernel of coagulation in the presence of turbulent, Brownian, gradient, and gravitational mechanisms of collisions in view of accumulation effect.     

Blunt bodies in a stream of nonequilibrium-ionized radiating gas

A supersonic stream of an inviscid tnonoatomic nonequllibrium-ionized radiating gas around blunt bodies is analyzed in this study. The results are illustrated by the example of an argon stream around spherically blunted bodies.Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 25, No. 4, pp. 681–687, October, 1973.     

Stability of operation of an apparatus containing a granular bed fluidized by a gas stream

The results of numerical experiments on the investigation of the stability of the fluidization process relative to finite perturbations and its behavior upon crossing the boundary of stability are presented.Notation H bed height - H₀, H_* bed heights in motionless and steady fluidized states - g free-fall acceleration - k₁, k₂ coefficients of resistance of gas-supply system and gas-distributing device, respectively - M molecular weight of gas - m mass of bed per unit cross-sectional area - p^*, p⁰ pressure at inlet and outlet of apparatus - Q₀, Q_b minimum fluidization velocity and average velocity of gas in the bubble phase - q, q_v total mass-flow rates of gas supplied to the bed and to the free cavity - R gas constant - S cross-sectional area of bed - V volume of cavity below gas-distributing grid accessible to the gas - gas density - T absolute temperature - c,, q₀ parameters introduced into (4) - t time - z dimensionless bed height - x dimensionless time - A, B, C, D, N, n dimensionless complexes introduced into (5) - v dimensionless volume - parameter introduced into (5) - z_* dimensionless bed height in steady fluidized state - circular frequency Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 33, No. 5, pp. 889–892, November, 1977.     

Calculation of the effective permittivity of a two-phase stream

A calculating equation is proposed for the effective permittivity of bubbly and gas-drop streams.     

Calculation of parameters of a flat turbulent jet in a deflecting stream

On the basis of the solution of the problem of a flat turbulent jet in a deflecting stream obtained earlier by the author a method is suggested for calculating the parameters of the main section of such a jet with allowance for the rarefaction occurring behind it. The amount of rarefaction was determined from an experiment and is accounted for by a second empirical constant. The results of a calculation by the proposed method are in satisfactory agreement with the experimental data.Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 25, No. 5, pp. 907-912, November, 1973.     

Study of the discharge process into a liquid of a gas stream from an immersed nozzle

The results of an experimental investigation of the discharge into a liquid of a gas stream from an immersed nozzle, positioned at an arbitrary angle to the surface, are presented. It is assumed that the gas is not dissolved in the liquid, i.e., it is nonassimilable.Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 33, No. 2, pp. 213–223, August, 1977.     

Kinetics of liberation of dissolved gas in a liquid stream

The results are presented for an experimental study of the rate of formation of the gaseous phase during the turbulent flow along a cylindrical channel of a liquid supersaturated with a gas.Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 28, No. 2, pp. 282–285, February, 1975.     

Thermoelectric method of measuring velocity fluctuations in a gas stream

A method is described of measuring velocity fluctuations by using a thermocouple connected to a rapid response temperature-measuring instrument. It is shown that the method permits investigation of velocity fluctuations in a high-temperature gas stream.