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Experimental results on reversing non-stationary heat transfer are presented for filtration of an air flow through an immobile heat accumulating medium consisting of lead (D = 2.0, 3.5, and 4.5 mm) and glass (D = 3.2 mm) balls. The studied device imitated the cyclic modes of heat regeneration in the ventilation system for domestic and office rooms. Dependency between the time of flow switching and Re number was measured. The mathematical model describing heat transfer between a gas flow and an immobile layer of balls was developed. Good correspondence between the experimental data and calculation results is observed for high Reynolds numbers. For low Re numbers the effect of heat losses is considerable, and experimental time of flow switching is shorter than the calculation one.

A two-dimensional mathematical model has been developed for unsteady thermophysical processes in the industrial duct of an uranium-graphite reactor with conversion fuel elements of the bush type. The numerical algorithm and computer code have been developed on the basis of the proposed model to investigate the temperature fields in an aluminum core, fuel, shell as well as in the cooling water with regard for the design and technological assembly peculiarities. The results of some computational experiments are presented, which characterize the distribution of temperature fields in the column of fuel elements and in the cooling water.

The zonal-iterative calculation method for radiation heat transfer is developed for arbitrary number of zones (opaque diffusely-radiating and reflecting surfaces). This method is based on transformation of the initial integral equations to equivalent system of integral equations with smaller kernel norm. The method provides high accuracy at a small number of the zones. The method was used for analysis of effective radiation in an isothermal tube cavity with a longitudinal pyrometric slit. In this case one zone was enough and one of the particular solutions can be obtained analytically.

A new combined numerical algorithm PIC-MCC (the particle-in-cell method with the collisions modelling by the Monte Carlo method) has been developed for a rapid computation of a radio-frequency (RF) discharge under a low pressure and a high plasma concentration. The results of test computations for various regimes of the capacitive RF discharge glow in argon and helium well agree with experimental data. A high efficiency of the new approach (the combined PIC-MCC algorithm) is demonstrated for modelling the electrons heating in the collisionless regime.

The possibility of separation of the water-steam plasma in a centrifugal force field of a vortex stream is under consideration. We obtained the formulas to compute the radial distribution of the plasma mixture components and also to determine the dependence of the pressure and its gradient on the distance to the axis for the regions of solid-state and potential rotation of the vortex.  The examples of poor arc stabilization and the proposals for its perfection are presented. The effect of the gas kind on the voltage of the vortex-stabilized arc is shown. The influence of the water-steam plasma individual components, regarding the separation, on the water-steam plasma energy characteristics is explained.

Electric and thermal characteristics of the two-chamber plasmatorch with a stepped outlet electrode were studied experimentally. Formulas for determination of arc voltage, plasmatorch efficiency, and length of a narrow part of the outlet electrode were derived. It is shown that such a plasmatorch is more efficient than the plasmatorch with a smooth outlet electrode.

The basic milestones of the life journey of S.P. Korolev (12.01.1907- 14.01.1966), the Designer General of rocket and space systems, are presented. Information on various missiles of the first generation R-1,
R-2, R-5, R-7, and R-9, launch vehicles Sputnik, Luna, Molniya, Vostok, Soyuz, and N-1, and also spacecraft designed for various purposes, which were developed under Korolev

Results on a hyperboloid-flare model tested in a new hypersonic wind tunnel with adiabatic compression AT-303 based at ITAM SB RAS at

The drag of an axisymmetric body of revolution in a nominally gradientless incompressible flow under the action of eddy breakup devices (EBU) is studied experimentally. It is demonstrated that the use of EBUs in the boundary layer may reduce the net drag of the body of revolution approximately by 1.75 %, as compared with the corresponding value for the original configuration. An increase in the chord length of single-element devices and the height of their location in the boundary layer is found to gradually reduce the EBU effectiveness and, hence, to increase the net drag, as compared with the original configuration.

Laminar-turbulent transition in a boundary layer of low-aspect-ratio wing was investigated. Experiments clarifying the flow structure, its mean and oscillatory characteristics were carried out accompanied by linear stability analysis of the wind tunnel data on the laminar flow velocity profiles. Theoretical results obtained in a parallel flow approximation are in a good agreement with the experimental data on disturbances evolution at the initial stage of transition to turbulence.