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0215U000940,
0114U004889
,
Modeling of nonequilibrium physical processes in metallurgy and technology features of pulsed surface modification of metal products.
Efremenko Vasyl Georgiyevich, Доктор технічних наук
29-07-2015
State Higher Educational Institution "Pryazovskyi State Technical University"
The object of study - hydrodynamics movement of dust particles in air streams, the motion of the boundaries between liquid and solid at the crystallization, the stress state across the section of steel products during thermal processing, the phenomenon of propagation of the piston cavity in the twophase environments, the chemical composition and properties of the nanoparticles. Objective - creating and analyzing mathematical models of the physical processes of the movement of particles under atmospheric unsteady flow, during separation of molten metal in the production of pure metals and superconductors, inside the steel product quenched using rolling heat, the formation of cavities in the liquid due to electric discharge, the preparation of nanoparticles by pulsed plasma discharge. Research methods - numerical simulation, electron microscopy, X-ray fluorescence. The first chapter presents a theoretical analysis of the movement of dust particles in the non-stationary atmospheric flows. In the second chapter, the mathematical model of the interface "liquid-solid" during the crystallization of metals and semiconductors is developed. The third chapter presents the results of a study of the chemical and phase composition of the nanoparticles obtained by pulsed plasma discharge. In the fourth chapter the changes in the state of stress in the steel grinding balls in the tremohardening using rolling heating are analyzed. In the fifth chapter a theoretical analysis of the generation of elastic pulses by powerful plasmoid in an acoustic waveguide filled with two-phase fluid is shown.
Єфременко Василь Георгійович
Буланчук Олег Миколайович
Джеренова Антоніна Василівна
Жук Віктор Іванович
Савінков Микола Олександрович
Тютюнников Володимир Іванович
Федун Віктор Іванович
Цвєткова Олена Валентинівна
Чабак Юлія Геннадіївна
2020-04-02
Updated: 2025-12-08
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