Научная электронная библиотека ULRICH'S Periodicals Directory

Сибирский государственный университет
науки и технологий имени академика М.Ф. Решетнева

Сибирский аэрокосмический журнал
ISSN 2712-8970 (Print) ISSN 2782-5760 (on-line)

Сведения об образовательной организации

UDK 532.51
STUDY OF HYDRODYNAMICS FEATURES IN THE APPARATUSES WITH MOVABLE NOZZLE
V. P. Danko1, 2*, V. V. Karnauh3, А. S. Titlov4
1Plekhanov Russian University of Economics 360, Severnaya Str., Krasnodar, 350002, Russian Federation 2Kuban State Technological University 2, Moskovskaya Str., Krasnodar, 350072, Russian Federation 3Donetsk National University of Economy and Trade named after Mykhajlo Tugan-Baranovskogo 31, Schorsa Str., Donetsk, 83050 4Odessa National Academy of Food Technologies 112, Kanatnaya Str., Odessa, 65039, Ukraine *E-mail: vladislav.danko@mail.ru
Apparatuses for the heat and mass transfer processes must be designed so that they have a maximum contact surface. Classification of heat-mass exchange apparatuses provides geometric features of the apparatus and the hydrodynamic condition they create. However, the main trend which remains dominant in the design of such apparatus is to create a thin film of liquid on the surface of the nozzle. The work was aimed at choosing the solution in which the MN of the heat-mass exchange apparatuses can be used to implement the contact handling process of gases and liquids with density values clarification of the nozzle elements (ρnе) and the column dynamic height (Нст) and obtain the specified calculated dependences which describe the hydrodynamics and mass transfer in the apparatuses with a movable nozzle, that is to create bases for engineering calculations. Research methods were theoretical study and experimental studies on heat and mass transfer devices with movable nozzle. The best ranger for mass transfer processes implementation is that of ρneІІ (ρ = 200–700 kg/m3), which is distinguished by a wide working area according to wg, acceptable values of fluid withdrawal and a relatively small dynamic layer height. Within the described mode, we can distinguish the area wg  4.7–6.0 m/s, where there is no dependence of Hp on wg. Specified calculated dependence obtained which describes the hydrodynamics and heat and mass transfer in the apparatuses with a movable nozzle.
Keywords: movable nozzle, fluidization, heat-mass exchange apparatus, critical speed, loss of pressure in the work area, dynamic height of nozzle layer, stationary mode.
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Danko Vladislav Pavlovich – Cand. Sc., Docent, Department of Trade and Catering, Plekhanov Russian University

of Economics. E-mail: vladislav.danko@mail.ru.

Karnaukh Viktoriia Viktorovna – Cand. Sc., Docent, Department of Refrigeration and Trade Equipment, Donetsk

National University of Economics and Trade named after Mıkhail Tugan-Baranovsky.

Titlov Alexander Sergeevich – Dr. Sc., professor, head of Department of Power Engineering and Pipeline

Transport of Energy Carriers, Odessa National Academy of Food Technologies.