Comprehensive Methodology for Turboexpander Units Flow Parts Designing

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DOI https://doi.org/10.15407/pmach2025.01.006
Journal Journal of Mechanical Engineering – Problemy Mashynobuduvannia
Publisher Anatolii Pidhornyi Institute of Power Machines and Systems
of National Academy of Science of Ukraine
ISSN  2709-2984 (Print), 2709-2992 (Online)
Issue Vol. 28, no. 1, 2025 (March)
Pages 6-18
Cited by J. of Mech. Eng., 2025, vol. 28, no. 1, pp. 6-18

 

Authors

Roman A. Rusanov, Anatolii Pidhornyi Institute of Power Machines and Systems of NAS of Ukraine (2/10, Komunalnykiv str., Kharkiv, 61046, Ukraine), e-mail: roman_rusanov@ipmach.kharkov.ua, ORCID: 0000-0003-2930-2574

Sergiy V. Moiseiev, PrJSC “Turbogaz” (6/4, Troitskyi lane, Kharkiv, 61003, Ukraine), e-mail: svmh@ukr.net

Oleg V. Kuprygin, PrJSC “Turbogaz” (6/4, Troitskyi lane, Kharkiv, 61003, Ukraine), e-mail: turbogaz@ukr.net

Dmytro V. Kaliamin, PrJSC “Turbogaz” (6/4, Troitskyi lane, Kharkiv, 61003, Ukraine), e-mail: kdv777@gmail.com

Arkadii V. Burniashev, PrJSC “Turbogaz” (6/4, Troitskyi lane, Kharkiv, 61003, Ukraine), e-mail: arkadii8201@gmail.com

Maksym K. Novikov, PrJSC “Turbogaz” (6/4, Troitskyi lane, Kharkiv, 61003, Ukraine), e-mail: novikovmaxim1980@ukr.net

 

Abstract

The author’s comprehensive methodology for designing the flow parts of turboexpander units, the main elements of which are a centripetal turbine and a centrifugal compressor, is presented. The methodology includes mathematical methods and models of various levels of complexity, from one-dimensional to spatial ones, as well as experimental research. The calculation of three-dimensional viscous flow is performed using the method of numerical integration of the averaged Navier-Stokes equations and Menter’s differential turbulence model. The spatial shape of the turbine and compressor is described using the method for which the initial data is given as a limited number of parameterized values. An example of the developed flow part, which has high gas-dynamic efficiency in a wide range of operating modes and corresponds to the best world analogues in terms of its characteristics, is given. It is shown that the calculated gas-dynamic characteristics are in satisfactory agreement with the experimental data. A database of highly efficient flow parts of turbines and compressors, which are used as prototypes in the creation of new modern turboexpander units, has been created.

 

Keywords: turboexpander, gas pipeline, natural gas, turbo-compressor, flow part.

 

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Received 14 October 2024

Accepted 16 December 2024

Published 30 March 2025