Development of a method for geometric modeling of centrifugal compressor impellers

Authors

DOI:

https://doi.org/10.15587/1729-4061.2021.224924

Keywords:

centrifugal compressor, impeller, outer and inner boundaries, blade, modeling

Abstract

The practice of designing centrifugal compressors in which impellers are the main components shows that there are reserves for their further improvement. One of the main reserves consists in improving flow conditions for the compressed medium in the compressor setting and, above all, in the impeller. A method of geometric modeling settings of the impellers of centrifugal compressors was proposed which involves the construction of meridional boundaries of impellers and the blade profile on an involute of the cylindrical surface of the outer radius of the impeller. The blade is represented by ruled surfaces. The outer boundary of the impeller is described by a curve in natural parameterization using cubic dependence of curvature on the arc length. Dependences and length of the arc are determined in the process of modeling the boundary based on the set source data. The problem is solved by minimizing deviations of intermediate curves from the boundary endpoint. The inner boundary is obtained as an envelope of circles inscribed in the meridional channel of the impeller. Radii of the circles are determined taking into account the flow areas of the channel. The midline of the blade profile on an involute of the cylindrical surface of the outer radius of the impeller is modeled using a curve that is presented in natural parameterization with quadratic law of curvature distribution. A computer code was developed in the Fortran Power Station programming environment that visualizes the obtained numerical results graphically on a computer display in addition to digital information on the modeled boundaries and the blade profile. Graphical results were presented. They confirmed the efficiency of the proposed method of modeling the settings of centrifugal compressor impellers. The method can be useful to offices involved in the design of centrifugal compressors

Author Biographies

Valeriy Borisenko, V. O. Sukhomlynskyi National University of Mykolaiv

Doctor of Technical Sciences, Professor

Department of Information Technology

Serhiy Ustenko , Odessa National Polytechnic University

Doctor of Technical Sciences, Associate Professor

Department of IT Designing Training

Iryna Ustenko , Admiral Makarov National University of Shipbuilding

PhD, Associate Professor

Department of Automated Systems Software

Kateryna Kuzma , V. O. Sukhomlynskyi National University of Mykolaiv

PhD

Department of Information Technology

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Published

2021-02-19

How to Cite

Borisenko, V. ., Ustenko , S., Ustenko , I., & Kuzma , K. . (2021). Development of a method for geometric modeling of centrifugal compressor impellers . Eastern-European Journal of Enterprise Technologies, 1(1 (109), 35–42. https://doi.org/10.15587/1729-4061.2021.224924

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Section

Engineering technological systems