The motion of solid-phase particles in countercurrent gas-suspension jets

Results are presented from an experimental study of the motion of particles of a disperse material in countercurrent gas-suspension jets. Data have been obtained on the motion of the solid-phase particles in the acceleration segment and in the zone in which the gas-suspension jets intersect.Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 15, No. 6, pp. 1034–1040, December, 1968.     

Calculation of turbulent gas jets

A technique is proposed for calculating jets with variable density. The variations of the basic parameters of a jet are obtained and they are compared with experimental data.Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 42, No. 3, pp. 395–402, March, 1982.     

Self-similar solutions for axisymmetric jets using two turbulence models

Similarity solutions for incompressible axisymmetric jets using a k–? and a constant eddy diffusivity turbulence models are considered. For the k–? model, the governing equations are very complex. Therefore, a transformation that simplifies these equations and makes them amenable to efficient numerical solution is used. Results for the velocity, turbulent kinetic energy and dissipation rate are obtained. Also, velocity decay rate, growth rate, entrainment and kinetic energy decay rate are determined. A comparison with experimental data and other works utilizing a parabolic marching asymptotic solution to the full partial differential equations is made. This comparison shows that similarity solutions are more accurate than solutions using numerical marching procedures.     

Similarity prediction of wall jets past axisymmetric bodies for power-law fluids

Summary The similarity solution is presented for laminar wall jets on bodies of revolution for power-law fluids. The functional dependence of the length and velocity similarity scales on a shape parameter and a flow behaviour index is determined. Discussion dealing with flow invariance, modified Mangler's transformation and with previously published results is carried out.     

Analysis of the parameters of discrete particle motion in axisymmetric turbulent impinging jets

The parameters of discrete particle motion in axisymmetric turbulent impinging air jets are determined.Notation x, y coordinates (Fig. 1) - v_x jet velocity - V_o maximum jet velocity - r_o nozzle radius - l _i length of the initial jet section - L spacing between the nozzle and the collision plane - ¯x dimensionless coordinate referred to the nozzle radius - ¯x_i dimensionless length of the initial section referred to the nozzle radius - d particle diameter - ₁ jet density - particle density - c_x particle drag coefficient - v particle velocity - v₁ axial jet velocity - kinematic coefficient of the flow viscosity - ¯x_o dimensionless coordinate referred to the distance L - d_c cement particle diameter - d_s sand particle diameter - ¯v_i dimensionless velocity of particle insertion into the jet, referred to V_o Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 37, No. 5, pp. 813–817, November, 1979.     

Determination of the distance to a turbulent cone during the interaction between laminar axisymmetric free jets

Results are presented of an experimental investigation to determine the distance to the turbulent cone originating in a laminar feeding jet during its interaction with a laminar control jet.Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 30, No. 5, pp. 803–810, May, 1976.     

Calculation of a two-phase flow in an axisymmetric nozzle

A system of differential equations is presented to describe a two-phase flow through an axisymmetric supersonic nozzle. The results for the solution of this system on a Minsk-14 computer are given. The theoretical results are compared qualitatively with the experimental data.     

Local characteristics of an axisymmetric impact jet

We present the results of an experimental investigation of the local characteristics of flow in an axisymmetric impact jet. Academic Scientific Complex “A. V. Luikov Heat and Mass Transfer Institute of the Academy of Sciences of the Reublic of Belarus,” Minsk: Institute of Thermophysics of the Siberian Branch of the Russian Academig of Sciences, Novosibirsk. Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 69, No. 4, pp. 615–624, July–August 1996.     

Calculation of a turbulent monodisperse flow in an axisymmetric channel

A stationary isothermal model of the aerodynamics of a two-phase flow in an axisymmetric channel has been constructed with allowance for the turbulent and pseudoturbulent mechanisms underlying the transfer of the solid phase momentum. The equations of dispersed phase motion are closed at the level of the equations for the second moments of the pulsation velocities of particles, whereas the equation of momentum transfer of the carrier is closed on the basis of a one-parameter model of turbulence extended to the case of two-phase turbulent flows. The results of calculations are compared with experimental data. __________ Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 81, No. 5, pp. 844–855, September–October, 2008.     

Heat exchange in the flow of a system of axisymmetric liquid jets onto a normally placed plane barrier

The influence of the geometrical and physical parameters of a system of axisymmetric jets impinging on a barrier on the heat-transfer coefficient and the final temperature of the liquid is analyzed.Translated from Inzhenerno-Fizicheshkii Zhurnal, Vol. 36, No. 1, pp. 51–54, January, 1979.     

Calculation of the direction of the axis of a stream resulting from the mixing of turbulent jets

The possibility is examined of calculating the inclination of the axis of a stream resulting from the mixing of turbulent jets, using a simplified method.     

Calculation of mode III stress intensity factor by BEM for cracked axisymmetric bodies

This paper is concerned with the numerical calculation of Mode III stress intensity factor by BEM for cracked axisymmetric bodies, under torsion. Mode III stress intensity factors K _III are obtained using the asymptotic displacement field in the vicinity of the crack border. The asymptotic field is derived by integration along the boundary of the meridian of the cylinder. For traction free cracks no discretization of the crack surface was found necessary. Numerical results proving the efficiency of the proposed method are presented and compared with results given in the literature and with those obtained by FEM.     

The influence of initial stream turbulence on the characteristics of an axisymmetric immersed jet

Results are given of measurement of mean velocity and of velocity fluctuations in an axisymmetric immersed jet at various values of initial turbulence. It is shown that as the initial stream turbulence increases, the length of the entrance section decreases, and that the entrance section practically disappears in a strongly turbulent jet.     

Effect of initial conditions on the characteristics of free jets exiting from curvilinear channels

Results are presented from an experimental study of the effect of centrifugal forces in a toroidal channel on the characteristics of a jet escaping therefrom.Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 51, No. 1, pp. 32–36, July, 1986.     

Threshold characteristics of devices used in the investigation of light absorption in an axisymmetric inhomogeneity

An estimate of the error in the calculation of the field of the absorption coefficient of an axisymmetric, nonhomogeneous structure probed by a laser is given. Emphasis is placed on the errors caused by photon noise and the intrinsic noise of the photodetectors. A cursory analysis of the parameters used in the determination of these errors demonstrates that the maximal threshold power of the photodetecting devices must be calculated in order to manage the measurement process.Translated from Izmeritel'naya Tekhnika, No. 12, pp. 21–23, December, 1995.     

Calculation of the characteristics of an electromagnetic temperature transducer

The main characteristics of an electromagnetic transformer transducer for the noncontact determination of the temperature of nonmagnetic cylindrical articles are considered. Translated from Izmeritel'naya Tekhnika, No. 1, pp. 53–56, January, 1997.