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Measurements of the Particle Concentration Fields in a Two-Phase Flow Past a Blunt Body
Pleiades Publishing Ltd - Tập 60 - Trang 374-378 - 2023
This paper presents the results of measurements of the solid particle concentration field near a frontal point of a cylindrical body with a flat end. We restore the particle concentration fields based on their image identification obtained by photographic fixation at low shutter speeds. The experiments revealed the effect of increasing the particle concentration near the body surface, which appear...... hiện toàn bộ
The formation of accelerated electrons and their effect on the structure of nanosecond discharge with slot cathode
Pleiades Publishing Ltd - Tập 45 - Trang 433-438 - 2007
Experimental investigations are performed of the current-voltage characteristics and spatial distribution of optical radiation of plasma within the cathode cavity and in the discharge gap under conditions of transverse nanosecond electric discharge with a slot cathode. The investigations are performed in helium in the gas pressure range from 1 to 100 torr. It is demonstrated that the cathode layer...... hiện toàn bộ
Gas-dispersed jet flow around a solid in a wide range of stagnation parameters
Pleiades Publishing Ltd - Tập 55 - Trang 87-94 - 2017
Characteristic gas-thermodynamic parameters of interaction of mono- and polydisperse jets with solids under pressures p
0 up to 2 MPa and at stagnation temperatures T
0 = 288–1750 K are investigated. The dependence of the velocity of collision of particles with the flowed solid on their material, size, and initial mass fraction in a s...... hiện toàn bộ
The Production of Highly Dispersed Structures under Conditions of Efflux and Relaxation of the Plasma of Jets of a Diaphragm Discharge in Vacuum
Pleiades Publishing Ltd - Tập 40 - Trang 626-628 - 2002
Mixed convection under conditions of weak external flow in a vertical channel with a finite-size heat source
Pleiades Publishing Ltd - Tập 46 - Trang 654-658 - 2008
Mixed convection is investigated in a vertical plane-parallel channel from a finite-size heat source located on one of the walls. Numerical calculations are performed for the Prandtl number value of 0.7, in the ranges of values of Grashof number from zero to 105 and Reynolds number from zero to 10. Two-dimensional unsteady-state Navier-Stokes equations in the Boussinesq approximation are used as m...... hiện toàn bộ
Hydraulic Characteristics of Ranque-Hilsch Energy Separators
Pleiades Publishing Ltd - Tập 43 - Trang 900-907 - 2005
The hydraulic characteristics of an intensely swirling flow in the energy separation chambers in Ranque-Hilsch vortex tubes are investigated analytically and experimentally. Computer codes are developed and realized numerically for the calculation of the aggregate coefficient of hydraulic drag under conditions of swirling flow in an axisymmetric channel of a vortex tube. The results are treated in...... hiện toàn bộ
Study of a Heterophase Medium Based on a Relaxing Plasma of a Diaphragm Discharge in Vacuum
Pleiades Publishing Ltd - Tập 60 - Trang 8-14 - 2023
The nonequilibrium luminescence of a C2 molecule in a jet of products of the high-temperature erosion of a diaphragm discharge in vacuum (Pinit = 10 Pa) at an early stage of afterglow (0.8–1.2 ms) is studied using the emission spectra of the C2 Swan bands system (d3Пg–a3Пu) by comparing the radiation intensities in the bands forming sequences with ∆ν = +1 and 0. The experimental results at the sta...... hiện toàn bộ
Features of a Low-Power, Low-Frequency, AC Arc between Solid and Liquid Electrodes
Pleiades Publishing Ltd - Tập 58 - Trang 441-443 - 2020
The results of an experimental study of an AC arc between solid and liquid electrodes at low frequencies and atmospheric pressure are presented. Arcing is established at a frequency of 33.3 Hz. The oscillogram and the current-voltage characteristic in one half-period of an AC arc between a copper electrode and industrial water are given. The current-voltage characteristics of the arc discharge bet...... hiện toàn bộ
The effect of spatial perturbations of a supersonic flow on heat flux to the surface of blunt bodies
Pleiades Publishing Ltd - Tập 53 - Trang 677-689 - 2015
The dependence of perturbations of pressure and heat flux to the surface of blunt bodies (cylinder, ellipse, and sphere) on the period of spatial perturbations of a supersonic flow has been studied numerically for different Reynolds numbers. It is shown that small perturbations of velocity, temperature, or density of the incoming flow can lead to significant perturbations of the heat flux to the s...... hiện toàn bộ
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