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Information × Registration Number 0225U000312, (0124U000636) , R & D reports Title Development of a mobile ejector-cleaning unit for the restoration of buildings, structures and equipment after fires in the war period popup.stage_title Розроблення методів і збір вхідних даних для реалізації розроблення математичних і фізичних моделей виготовлення стенду для тестування збору експериментальних даних Head Baha Vadym M., Кандидат технічних наук Registration Date 09-01-2025 Organization Sumy State University popup.description1 The aim of the project is to develop a more efficient design of the ejector cleaning unit's working nozzle and modernize the mobile common off-road platform with remote control capabilities popup.description2  A unified, mobile experimental stand was created to collect data on the study of the working nozzle of the ejector-cleaning unit in a wide range of geometric and operating parameters. This development of a mobile ejector cleaning unit can be especially valuable for performing restoration work on buildings, structures and equipment during wartime, which is important for the development of the domestic restoration complex. A methodology for testing the performance characteristics of the ejector-cleaning unit as a function of geometric and operating parameters has been developed. A mathematical model of the dispersed phase particle motion in a gas flow was developed. To describe the motion of sand particles in the nozzle of an abrasive jet apparatus, a refined mathematical model in a two-dimensional unsteady state is proposed, but supplemented by components of hydraulic friction resistance and Basset's forces in a fractional differential form. A dependence for determining the angle of deflection of dispersed particles in the working nozzle of a pneumatic abrasive unit is derived. A methodology for testing the performance characteristics of the ejector-cleaning unit depending on the geometric and operating parameters of the abrasive jet nozzle has been developed. A methodology for visual presentation of the results of numerical study of the air-abrasive flow has been developed. Based on the results of a series of numerical calculations, the values of mass flow rates of the continuous and dispersed flows, flow velocity in each phase, the force of impact of abrasive particles on an obstacle, and other working pairs were obtained. Product Description popup.authors Baha Vadym M. Baha Tetiana S. Husiev Danylo M. Diachenko Serhii S. Kasian Ruslan O. Miroshnychenko Dmytro V. Nishta Bohdan V. Pavlenko Ivan V. Yakovchuk Viktoriia V. popup.nrat_date 2025-01-09 Close