Journal of Power and Energy Engineering, 2022, 10, 27-37 https://www.scirp.org/journal/jpee ISSN Online: 2327-5901 ISSN Print: 2327-588X DOI: 10.4236/jpee.2022.104002 Apr. 24, 2022 27 Journal of Power and Energy Engineering Improving the Energy Performance of a High-Pressure Hydraulic Turbine by Researching the Flow in the Flow Part Konstantin Mironov 1 , Yuliia Oleksenko 1 , Aminjon Gulakhmadov 2,3,4* 1 Department of Hydraulic Machines named after Academician G.F. Proskura, National Technical University “Kharkiv Polytechnic Institute”, Kharkiv, Ukraine 2 Ministry of Energy and Water Resources of the Republic of Tajikistan, Dushanbe, Tajikistan 3 Research Center for Ecology and Environment of Central Asia, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, China 4 Institute of Water Problems, Hydropower and Ecology of the National Academy of Sciences of Tajikistan, Dushanbe, Tajikistan Abstract In this study, the goal is to increase the efficiency of a high-pressure hydraulic turbine. The goal is achieved by numerical flow simulation using CFX-TASCflow. This approach reduces costs and time compared to the experimental ap- proach and allows for improving the turbine productivity and its design. The analysis of energy losses in the flow part of the turbine Fr500, as well as the analysis of the influence of the opening of the guide vanes on changes in energy losses. The results showed that the greatest losses occur in the guide vane 3.02% based on the two-dimensional model and 2.5% based on the 3D model, which significantly affects the efficiency. The analysis was carried out using programs for calculating fluid flow in two-dimensional and three-dimensional formulations. With the help of the study, the main energy problem is solved—increasing efficiency. Keywords Francis Turbine, Efficiency, Spiral Case, Runner, Guide Vane, Draft Tube 1. Introduction The generally accepted approach to improving the flow parts of hydro turbines is to form the geometry of the hydro turbine by introducing changes in the original version, obtained as a result of an approximate solution of the inverse problem, or adopted as an analogue. Comparison of design options is based on How to cite this paper: Mironov, K., Oleksenko, Y. and Gulakhmadov, A. (2022) Improving the Energy Performance of a High-Pressure Hydraulic Turbine by Re- searching the Flow in the Flow Part. Journal of Power and Energy Engineering, 10, 27-37. https://doi.org/10.4236/jpee.2022.104002 Received: January 28, 2022 Accepted: April 21, 2022 Published: April 24, 2022 Copyright © 2022 by author(s) and Scientific Research Publishing Inc. This work is licensed under the Creative Commons Attribution International License (CC BY 4.0). http://creativecommons.org/licenses/by/4.0/ Open Access