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First name, Middle name, Last name, Scientific degree, Scientific rank, Current position. Full and brief name of the organization, The organization address.Varsegova Evgeniya Vladislavovna candidate of physical-mathematical sciences, associate professor E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Osipova Liliya Eduardovna candidate of technical sciences, associate professor E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Kazan State University of Architecture and Engineering The organization address: 420043, Russia, Kazan, Zelenaya st., 1 Osipov Eduard Vladislavovich candidate of technical sciences, associate professor E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Kazan National Research Technological University The organization address: 420015, Russia, Kazan, Karl Marx st., 68
Title of the articleNumerical simulation of air flows in a low-pressure ejector system
Abstract.Problem statement. Production processes are accompanied by the release of flammable, explosive, and substances that are hazardous to health of workers, the composition and volume of which is determined by the production technology. Industrial ventilation systems move large volumes of air, purify the air from various pollutants, or dilute the concentration of harmful substances to the maximum permissible concentration values. It is rather difficult to single out typical solutions for the construction of industrial ventilation systems. CFD-modelling methods can help in their design, in particular, when determining the patterns of operation of ejection systems in paint booths. The purpose of this work is numerical simulation of air flows in a low-pressure ejector system for industrial ventilation systems, where the aspirated air contains flammable, explosive, and abrasive impurities. Results. For the given airflow rates, the values of velocities, and pressure losses in different sections of the ejector at different ejection coefficients ? are determined. The ? coefficient turned out to be slightly more than one, which indicates a very efficient operation of the ejector system. In the case of ? > 1, the purification of dirty air occurs by mixing a significant amount of clean air. Conclusions. The significance of the results obtained for the construction industry is in the possibility of using numerical modeling in the design of low-pressure ejector systems when the optimal operating mode of the fan is selected based on pressure loss.
Keywords.industrial ventilation, ejector system, ejection coefficient, numerical study, pressure loss.
For citations:Varsegova E.V., Osipova L.E., Osipov E.V. Numerical simulation of air flows in a low-pressure ejector system // Izvestiya KGASU. 2020. №4(54) P.96-103.


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