Engineering, Energy, Transport AIC

Aliyev Yelchin – Doctot of Technical Sciences, senior researcher, associate professor of the departments of mechanization of production processes in animal husbandry of Dnipro State Agrarian and Economic University (St. S.Efremova, 25, Dnipro, Ukraine, 49000, e-mail: aliev@meta.ua).
Mykolenko Svitlana – Candidate of Technical Sciences, Associate Professor of the Department of Technology of Storage and Processing of Agricultural Products Department of Dnipro State Agrarian and Economic University (25, Serhiy Yefremova St., Dnipro, Ukraine, 49000).
Yaropud Vitaliy – Candidate of Technical Sciences, Associate Professor of the Department of machinery and equipment for agricultural production of Vinnytsia National Agrarian University (St. Soniachna, 3, Vinnytsia, Ukraine, 21008, e-mail: yaropud77@gmail.com).
Malegin Roman – undergraduate of the departments of mechanization of production processes in animal husbandry of the Dnipro State Agrarian and Economic University (25 Sergiy Efremov St., Dnipro, Ukraine, 49000).

An urgent task is to increase the efficiency of preparation of high-quality feed through the use of technological processes of dispersion and homogenization with cavitation processing of feed components. The aim of the research is to substantiate the constructive-technological scheme of cavitation dispersant-homogenizer of agricultural raw materials of plant origin for feed purposes. As a result of research, the design of the working bodies (rotor and stator) of the cavitation dispersant-homogenizer was proposed and justified. Structurally, stator resonators and rotor confusers at the moment of their comparison form blades, the curvature of which repeats the curvature of the impeller of a centrifugal pump. To verify the operation of the proposed working bodies of the cavitation dispersant-homogenizer, numerical simulation was performed using the Star CCM + software package. Modeling was carried out using the model of multiphase interaction, Eulerian multiphase, volumetric fluid method (VOF). The phase motion obeys the k-ε turbulence model. At the first, the approximate mixture was presented as a two-phase liquid-gas medium, while the gas is the gaseous phase of the liquid. The thermodynamic state of the mixture was allowed as a resolving multiphase temperature. It was assumed that the liquid in the process of movement had a constant density, and the gas was ideal. The interaction between the liquid-gas phases obeyed the VOF-VOF bulk fluid and Schnerr-Sauer cavitation models. As a result of numerical simulation of the cavitation dispersion process on the developed design, its effectiveness is proved as a pump for pumping liquids with components of the feed mixture, as well as a grinder using a hydro-shock, which is formed as a result of cavitation in the stator resonators and rotor confusers.

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