Impact of the Closed, Semi-Opened, and Combined Contra-Rotating Stages on Volume Loss Characteristics | Journal of Engineering Sciences

Impact of the Closed, Semi-Opened, and Combined Contra-Rotating Stages on Volume Loss Characteristics

Author(s): Kulikov O.1, Ratushnyi O.1*, Moloshnyi O.2, Ivchenko O.1, Pavlenko I.1

1 Sumy State University, 2, Rymskogo-Korsakova St., 40007, Sumy, Ukraine;
2 Pompax Ltd., Wroclaw, Lower Silesia, Poland

*Corresponding Author’s Address: [email protected]

Issue: Volume 9, Issue 1 (2022)

Submitted: February 20, 2022
Accepted for publication: June 9, 2022
Available online: June 14, 2022

Kulikov O., Ratushnyi O., Moloshnyi O., Ivchenko O., Pavlenko I. (2022). Impact of the closed, semi-opened, and combined contra-rotating stages on volume loss characteristics. Journal of Engineering Sciences, Vol. 9(1), pp. D6-D13, doi: 10.21272/jes.2022.9(1).d2

DOI: 10.21272/jes.2022.9(1).d2

Research Area:  MECHANICAL ENGINEERING: Dynamics and Strength of Machines

Abstract. The 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 semi-opened 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.

Keywords: pump, energy efficiency, semi-opened impeller, semi-opened blade disc.


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