Journal of Engineering Sciences / Журнал інженерних наук
Permanent URI for this collectionhttps://devessuir.sumdu.edu.ua/handle/123456789/34326
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Item Impact of the closed, semi-opened, and combined contra-rotating stages on volume loss characteristics(Sumy State University, 2022) Куліков, Олександр Андрійович; Куликов, Александр Андреевич; Kulikov, Oleksandr Andriiovych; Ратушний, Олександр Валерійович; Ратушный, Александр Валерьевич; Ratushnyi, Oleksandr Valeriiovych; Moloshnyi, O.; Івченко, Олександр Володимирович; Ивченко, Александр Владимирович; Ivchenko, Oleksandr Volodymyrovych; Павленко, Іван Володимирович; Павленко, Иван Владимирович; Pavlenko, Ivan VolodymyrovychThe article is devoted to studying the contra-rotating stages with different impellers and blade discs. Determining the reduction of volumetric losses by modeling the contra-rotating stages in the software package ANSYS CFX. The work aimed to create and study the flow and characteristics: semi-open, closed impellers, and blade discs. As a result of the work, the following contra-rotating stages were determined and compared: the semiopened impeller with the semi-opened blade disc; the closed impeller with the closed blade disc; the semi-opened impeller with the closed blade disc; the closed impeller with the semi-opened blade disc. As a result of research, fluid flows in contra-rotating stages and their characteristics in the form of pressure and efficiency were obtained. According to the obtained data, the expediency of using contra-rotating stages as a working body of the pump is written.