Blyuss B.A., Lukianov P.V., Dziuba S.V. Simulation of quasi-point turbulent vortex in the swirling flows of fluids in the preparation equipment
- Details
- Parent Category: Geo-Technical Mechanics, 2018
- Category: Geo-Technical Mechanics, 2018, Issue 143
Geoteh. meh., 2018, 143, 49-59
https://doi.org/10.15407/geotm2018.143.049
SIMULATION OF QUASI-POINT TURBULENT VORTEX IN THE SWIRLING FLOWS OF FLUIDS IN THE PREPARATION EQUIPMENT
¹BlyussB.A.,²LukianovP.V., ¹DziubaS.V.
¹ Institute of Geotechnical Mechanics named byN. Polyakov of National Academy of Sciences of Ukraine, ² National Aviation University MSE of Ukraine
УДК [532.517.4:532.527:622.7.002.5].001.57
Languige: Ukrainian
Annotation.
In the article, the authors analyze parameters of operating efficiency of the hydrotechnical system modes used in technologies for mineral raw material processing, which determine a complex of functional, environmental and economic factors that objectively affect the production profitability and are realized through the creation of favourable conditions for modernization of the technologies, introduction of new tools and equipment and reduction of energy consumption in the processes of transportation. It is substantiated that for the preservation and renewal of mineral raw materials, the following basic conditions should be provided: rational use of mineral resources (especially for non-renewable resources); undertaking of effective measures for the natural resources renewing (to restore and improve natural fertility of the land, to bed forest plantations, to renew water reservoirs); maximization of the secondary raw materials and other waste products use; improvement and support of environmentally friendly processing industries and nature management. By using the concept of the Taylor-Coetta boundary current and its properties, a mathematical model of a quasi-point turbulent vortex is proposed. Since the parabolic law of longitudinal velocity for the laminar flow corresponds to a quasi-point laminar vortex, it is also logically to use a quasi-point vortex distribution for the turbulent flow. This very distribution corresponds qualitatively to the experimentally observed longitudinal velocity profile and, as a result, indicates the integral effect of reducing the turbulent viscosity based on the Reynolds equations and the Bussinesque gradient turbulence model. The main requirements for the rational use of mineral raw materials in Ukraine are the most complete extraction from the bowels and rational use of minerals and the components contained therein; prevention of harmful influence of mining works related to the use of mineral resources, on the mineral resources conservation; protection of minerals from flooding, fires and other factors that reduce their quality and value; and preservation and improvement of the environment in areas near the location of existing deposits.
Keywords:
mineral raw material, turbulent viscosity integral reduction, quasi-point turbulent vortex, optimum motion, stationary viscous rotational motion, hydraulic engineering systems
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About the authors
Blyuss Boryis Aleksandrovich, Doctor of Technical Sciences (D. Sc.) Professor, Head of Department of Geodynamic System and Vibration Tehnologies, M.S. Polyakov Institute of Geotechnical Mechanics National Academy of Sciences of Ukraine (IGTM, NAS of Ukraine), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.
Lukianov Pavel Vladimirovich, Candidate of Physics and Mathematics Sciences (Ph.D..), Senior Researcher, Accosiate Professor in Hydro Gas Systems Depertment, of National Aviation University MES of Ukraine, Kyiv, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.
Dziuba Serhii Vladimirovich, Candidate of Technical Sciences (Ph.D), Senior Researcher in Department of Geodynamic System and Vibration Tehnologies, M.S. Polyakov Institute of Geotechnical Mechanics National Academy of Sciences of Ukraine (IGTM, NAS of Ukraine), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.