Научная электронная библиотека ULRICH'S Periodicals Directory

Сибирский государственный университет
науки и технологий имени академика М.Ф. Решетнева

Сибирский аэрокосмический журнал
ISSN 2712-8970 (Print) ISSN 2782-5760 (on-line)

Сведения об образовательной организации

UDK 62-251-762.89:532.5.013.12 Doi: 10.31772/2712-8970-2021-22-3-494-503
Flow model in the impeller of a centrifugal pump
Nazarov V. P., Chernenko V. V., Chernenko D. V.
Reshetnev Siberian State University of Science and Technology, 31, Krasnoyarskii rabochii prospekt, Krasnoyarsk, 660037, Russian Federation
In accordance with the results of the features analysis of foreign design technology and the creation of aerospace technology products, the certification orientation of all types of work can be traced, starting from the preliminary design stage, which imposes particularly high requirements on the quality of calcula-tion methods, algorithms and software used in the design development of the project. Without the advanced level of domestic developments in the field of modeling hydrodynamic processes in aircraft systems, in the next decade it will become impossible to compete with foreign developers of aviation and rocket-space sys-tems. In accordance with modern theoretical and experimental studies, the flow pattern in the flow path of a vane machine is a complex superposition of the main and secondary flows. The article discusses the me-thod for calculating the fluid flow in the interscapular channel of a centrifugal impeller with a finite num-ber of vanes, the construction of the energy characteristics of the impeller and its optimization by the num-ber of vanes. The calculation consists of two parts: firstly, the determination of the theoretical head taking into account the influence of the finite number of vanes based on analysis of force interaction, and, sec-ondly, determination of hydraulic losses in the impeller by integrating friction stresses along the limiting surfaces. The results from both parts are used to optimize the number of vanes in the pump impeller. Ana-lytically, an equation for the pressure at a point and the coefficient of influence of a finite number of vanes are obtained. Taking into account the law of friction, an expression was obtained for the pressure loss. The described method for calculating the spatial boundary layer is quite simple and intuitive, and gives ap-proximate results that make it possible to estimate the required quantities. However, there is a need for further elaboration of the method to bring it to a form that makes it possible to calculate the three-dimensional flow of the working fluid in a channel of arbitrary shape. Based on the results of theoretical studies, an algorithm and a calculation program were developed that allow calculating local values. The results of the calculation of the theoretical head in the impeller can be used for a more accurate calcula-tion of a centrifugal pump.
Keywords: centrifugal pump, impeller, head, optimization.
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Nazarov Vladimir Pavlovich – Cand. Sc., Professor, Head of the Department of Aircraft Engines; Reshetnev Siberian State University of Science and Technology. E-mail: nazarov@sibsau.ru.

Chernenko Valentina Viktorovna – Post-graduate student of the Department of Refrigeration, Cryogenic Engineering and Air Conditioning; Reshetnev Siberian State University of Science and Technology. E-mail: 2887722@mail.ru.

Chernenko Dmitriy Viktorovich – Cand. Sc., Associate Professor, Associate Professor of the Department of Refrigeration, Cryogenic Engineering and Air Conditioning; Reshetnev Siberian State University of Science and Technology. E-mail: g_ramzes@mail.ru.