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.     

Experimental study of non-steady-state turbulent flow in an axisymmetric diffusor

Results of an experimental study of the structure of an oscillating flow in a conical diffusor are presented and evaluated.Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 51, No. 1, pp. 37–41, July, 1986.     

Oscillatory turbulent flow in a cylindrical channel

Results are presented from a study of an unsteady turbulent boundary layer in a cylinder with different flow conditions.Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 50, No. 6, pp. 908–912, June, 1986.     

Modeling axisymmetric flow through a converging channel with an arbitrary yield condition

Summary A system of ordinary differential equations describing the velocity, strain and stress fields of an isotropic rigid perfectly plastic material flowing through an axisymmetrical converging channel was derived. The plastic flow behavior was assumed to be described by an arbitrary yield condition and its associated flow rule. The solution of this problem was applied to the case of a yield function suitable for isotropic FCC polycrystals such as aluminum alloys. The singularity of the strain rate field at the channel wall where maximum friction forces occur was discussed and the influence of the yield surface shape on the velocity, strain and stress fields was investigated.     

Calculation of a three-dimensional turbulent cascade flow

A three-dimensional steady incompressible viscous flow through a plane cascade of turbine blades has been analyzed through a numerical method based on the Navier-Stokes equation. Particular attention is paid to the prediction of secondary flows occurring due to the endwall boundary layer and the blade geometry. A standard k- model is used for the modelling of Reynolds stress and boundary-fitted coordinates are adopted to represent the complex blade geometry accurately. Two differencing schemes are applied to the convective terms to investigate the effect of numerical diffusion. Experimental data obtained for the flows through the Langston cascade are selected for code validation. Computed results for the velocity vectors and static pressure distributions are in good agreement with presious measurements and provide validity of this numerical method. Three-dimensional viscous flow phenomena and the distribution of total pressure loss caused by secondary flows are also reasonably well predicted.List of symbols A _w area of the control volume surface - a coefficient of the discretized equation - B product of the transformation matrix - b transformation matrix - C _x axial chord of the airfoil - C _p pressure coefficient - C _pt total pressure loss coefficient - mass-averaged total pressure loss coefficient - C ₁, C ₂, C coefficients of the standard k- model - E constant used in the law of the wall - unit vectors in the Cartesian coordinate system - F mass flux through the control volume surface - f linear interpolation constant - G production term in the turbulent kinetic energy, or the contravariant velocity - J Jacobian - k turbulent kinetic energy - L characteristic length - l ⁺ nondimensionalized vertical distance from the wall - p pressure - p _t total pressure     

Experimental study of turbulent flow in a rotating channel

Results are shown of measurements pertaining to the turbulence of flow in a short channel rotating about its axis.Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 24, No. 6, pp. 1103–1108, June, 1973.     

Formation of a developed turbulent flow in a quadratic channel

We present results of experimental investigations of aerodynamic and statistical characteristics of the region of natural transition and fully developed turbulent flow in quadratic channels.Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 42, No. 1, pp. 52–58, January, 1982.     

Particle deposition on channel walls in a turbulent flow

The process of admixture deposition from a turbulent flow for different values of the particle reflection coefficient from the wall is analyzed. A generalizing formula is proposed for the computation of the deposition rate on a completely absorbing surface in a broad range of variation of the particle inertia.Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 59, No. 5, pp. 735–742, November, 1990.     

Temperature fluctuation balance in an axisymmetric turbulent wake

Results of experiments conducted in the thermal wake behind an axisymmetric body are used to evaluate the radial profiles of different terms of the balance equation for the mean square of temperature fluctuations.Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 50, No. 2, pp. 181–187, February, 1986.     

Hydrodynamic characteristics of turbulent flow of an incompressible fluid in a channel with porous walls

The effect of a transverse mass flux and a pressure gradient on the shaping of the flow structure in a channel with porous walls is investigated.Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 32, No. 4, pp. 588–593, April, 1977.     

Method of calculation of a turbulent flow in an axial gap with a variable radius between a rotating disk and an axisymmetric casing

An integral method for calculation of a turbulent flow in an axial gap between a rotating disk and an axisymmetric casing is developed with account for the small flow through the gap, the variation of the gap width over the radius, and the interaction with outer flows. Limitations of the mathematical models used by most researchers and ways of surmounting them are revealed. The method is confirmed by a comparison with known experimental data. The obtained computational integral parameters were used repeatedly to improve economy and reliability of industrial pumps, turbines, and compressors. Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 71, No. 6, pp. 1107–1115, November–December, 1998.     

An electric arc in a channel bearing a turbulent gas flow

A study of the positive column in an arc in a tube containing a turbulent gas flow is presented. Working formulas are given for estimating the arc parameters.Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 35, No. 1, pp. 113–120, July, 1978.     

Volumetric rate of a turbulent newtonian fluid flow in a cylindrical channel

A new formula to calculate the volumetric rate of a turbulent Newtonian fluid flow is suggested. Experimental verification of the validity of the formula for fluids of different physicochemical nature passed through a cylindrical channel of a laboratory rig has been made. __________ Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 81, No. 5, pp. 856–859, September–October, 2008.     

Calculation of a laminar axial flow of a nonlinear viscoplastic medium in an annular channel

We calculate the fundamental field and integral characteristics (velocity profiles, tangential stresses, outflow rate, pressure loss, boundaries of the quasirigid core) for a nonlinear viscoplastic Cesson medium in stationary stabilized flow in a coaxially cylindrical channel.Translated from Inzherno-Fizicheskii Zhurnal, Vol. 19, No. 4, pp. 689–697, October, 1970.     

Calculation of characteristics of turbulent poiseuille flow

A previously described approach is used to calculate decay of a laminar flow into individual turbulized liquid layers. The minimum turbulence scale, turbulent viscosity, and frequency spectrum are determined.Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 57, No. 3, pp. 382–386, September, 1989.     

Discharge of a turbulent jet in a monodisperse fluidized bed

The velocity of initial circulation is calculated and explanations are given for the mechanism of jet collapse and the existence of bubble and jet regimes.Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 43, No. 6, pp. 913–918, December, 1982.     

Calculation of electric arc interaction with a turbulent gas flow

The characteristics of an electric arc in a turbulent gas flow are studied. Relationships for calculating turbulent transport are presented.Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 54, No. 4, pp. 550–557, April, 1988.     

Dynamic characteristics of pulsating turbulent flow of compressible gas in a channel

A model of turbulent transfer that allows for the effect of flow-rate oscillations on the turbulent stress is used to investigate pulsating turbulent flow of a compressible gas in a narrow channel. An algorithm for solving numerically the system of equations that describes this process by the finite-difference method with the use of an implicit iteration scheme is proposed. The effect of operating parameters on the amplitude-frequency characteristic is considered.     

Experimental investigation of isothermal turbulent flow in a rectangular channel with blowing

The profiles of longitudinal averaged velocities in a rectangular channel with two-way uniform blowing are measured. A method is proposed for the calculation of the velocities based on the obtained empirical relations. The normal components of the velocity and the shear stresses in the flow are computed.Deceased.Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 19, No. 3, pp. 406–411, September, 1970.