Relevant bibliographies by topics / Hydroturbine terms

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  1. Journal articles
  2. Dissertations / Theses

Academic literature on the topic 'Hydroturbine terms'

Author: Grafiati
Published: 30 May 2022
Last updated: 31 July 2025

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Journal articles on the topic "Hydroturbine terms"

1

Prokopenko, A. N., and A. V. Kostruba. "Reconstruction of Nizhne-Svirskaya HPP hydroturbines using propeller blade runners with variable rotation speed." Safety and Reliability of Power Industry 15, no. 4 (2023): 300–308. http://dx.doi.org/10.24223/1999-5555-2022-15-4-300-308.

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Reconstruction of axial-flow hydroturbines through installation of variable speed propeller blade runners is considered. Using daily information about water head, capacity, and suction height of Nizhne-Svirskaya HPP units, topograms of hydro equipment operating conditions were created. For obtaining a regular pattern of unit capacity usage in power grid, those topograms were redesigned into histograms of relative duration of normalized capacity. Using aforementioned histograms enabled to substantiate the possibility of application of propeller blade runners for HPP reconstruction. The most dan
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Sahakyan, A. A., and D. A. Butko. "Converting Hydraulic Resistance Energy of the System into Electricity." Advanced Engineering Research 22, no. 2 (2022): 142–49. http://dx.doi.org/10.23947/2687-1653-2022-22-2-142-149.

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Introduction. A gravity conduit with a control valve and a pressure regulator in the gravity water-supply pipe is considered under conditions when the hydraulic regime of the water-supply system is not disturbed. In relation to such a system, the problems of converting the energy of local artificial hydraulic resistance into electricity are investigated.Materials and Methods. Literature that highlights the possibility of using microturbines for power generation in water systems was studied. The actual values noted by the continuous pressure recorder (logger) for 12 hours were presented, as wel
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Kukhtenkov, Yurii. "EXPERIMENTAL AND CALCULATION STUDY OF PRESSURE PULSATIONS IN THE RADIALAXIAL HYDROTURBINE." Bulletin of the National Technical University "KhPI". Series: Hydraulic machines and hydraulic units, no. 1 (November 14, 2022): 66–70. http://dx.doi.org/10.20998/2411-3441.2022.1.10.

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The force interaction of the vortex swirls in the draft tube of the hydraulic turbine RO with the elements of the flow path can lead to serious accidents. Reducing low-frequency pressure pulsations is an urgent task, as it helps to increase the reliability and increase the power of hydraulic units. For this, special devices are sometimes used. The aim this of the work was to compare modern methods for calculating low-frequency bundle pressure pulsations in a draft tube with experiment. Experimental studies of pressure pulsations in the flow part and the impeller blade of the RO115 hydraulic tu
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Junyi, Li, and Qijuan Chen. "Fractional Order Controller Designing with Firefly Algorithm and Parameter Optimization for Hydroturbine Governing System." Mathematical Problems in Engineering 2015 (2015): 1–11. http://dx.doi.org/10.1155/2015/825608.

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A fractional order PID (FOPID) controller, which is suitable for control system designing for being insensitive to the variation in system parameter, is proposed for hydroturbine governing system in the paper. The simultaneous optimization for several parameters of controller, that is,Ki,Kd,Kp,λ, andμ, is done by a recently developed metaheuristic nature-inspired algorithm, namely, the firefly algorithm (FA), for the first time, where the selecting, moving, attractiveness behavior between fireflies and updating of brightness, and decision range are studied in detail to simulate the optimizatio
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5

Su, Wen-Tao, Xiao-Bin Li, Feng-Chen Li, Xian-Zhu Wei, Jin-Tao Liu, and Yu-Lin Wu. "On the Flow Instabilities and Turbulent Kinetic Energy of Large-Scale Francis Hydroturbine Model at Low Flow Rate Conditions." Advances in Mechanical Engineering 6 (January 1, 2014): 786891. http://dx.doi.org/10.1155/2014/786891.

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This paper is to make a better understanding of the flow instabilities and turbulent kinetic energy (TKE) features in a large-scale Francis hydroturbine model. The flow instability with aspect of pressure oscillation and pressure-velocity correlation was investigated using large eddy simulation (LES) method along with two-phase cavitation model. The numerical simulation procedures were validated by the existing experimental result, and further the TKE evolution was analyzed in a curvilinear coordinates. By monitoring the fluctuating pressure and velocities in the vanes’ wake region, the local
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Volkov, A. V., A. A. Druzhinin, V. Yu Liapin, D. V. Mylkin, and B. M. Orakhelashvili. "Optimization of input elements of flow part of small axial hydroturbines." Safety and Reliability of Power Industry 16, no. 2 (2023): 79–86. http://dx.doi.org/10.24223/1999-5555-2023-16-2-79-86.

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A large area of Russia’s territories, where consumers are not connected to the centralized energy system, leads to the need to use autonomous energy sources. Most often, these are built on the basis of diesel power plants and have a number of logistical and operational problems. These factors lead to a high cost of electricity with low indicators of environmental friendliness and equipment reliability. As a result, renewable energy sources are becoming more and more popular. An important advantage of RES in comparison with fossil fuel energy sources is that these resources are virtually inexha
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7

Krupa, Yevhenii, and Yevheniia Demchuk. "MODERN SOFTWARE FOR THE NUMERICAL STUDY OF FLOW IN HYDRAULIC MACHINES." Bulletin of the National Technical University "KhPI". Series: Hydraulic machines and hydraulic units, no. 1 (November 14, 2022): 54–58. http://dx.doi.org/10.20998/2411-3441.2022.1.08.

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In the past few decades, the field of developing computer software systems has been actively developing, which in turn leads to competition in the software market. Qualified engineers working in the hydroturbine industry must be able to use a computer not only at the user level, but also at the programmer level in order to program modules for their own needs based on existing software systems. Recently, numerical simulation has become applicable to an ever wider class of flows, replacing experimental research methods. Certain numerical models are characterized by different areas of applicabili
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8

Крупа, Євгеній Сергійович. "DEVELOPMENT OF HORIZONTAL BULB HYDROTURBINES FOR HIGH HEADS WITH A WIDE RANGE OF RELIABLE OPERATION MODES." Bulletin of the National Technical University "KhPI". Series: Hydraulic machines and hydraulic units, no. 2 (June 4, 2023): 33–38. http://dx.doi.org/10.20998/2411-3441.2022.2.05.

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The issues and directions for improving the energy-cavitation and operational performance of hydro turbine equipment of hydroelectric power plants are considered. The paper analyzes in detail the directions for improving the main indicators characterizing the energy and operational advantages of horizontal hydro turbines. Straight-axis Kaplan hydraulic turbines with a horizontal axis of rotation of the hydraulic unit have incomparable advantages compared to hydraulic turbines with water supply using a spiral case, in terms of higher throughput and a wider range of operation. The practice of hy
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Zhang, Boran, Wuyi Wan, and Li Bi. "Improvement on Simulation Methods of Fluid Transient Processes in Turbine Tailrace Tunnel." Journal of Pressure Vessel Technology, September 1, 2020. http://dx.doi.org/10.1115/1.4048325.

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Abstract In numerical simulations of hydroturbine systems, the fluid in the draft tube keeps alternating between free surface flow condition and pressured flow condition. This combination of free surface flow model and pressured flow model has been a focus of researchers. Because of the huge difference in pressure wave speed, the two models differ much in terms of meshing even in the same method. To track the interaction point between free surface flow and pressured flow, a type of interaction point tracking method (IPTM) is proposed, which is based on the method of characteristics. Using a co
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Dissertations / Theses on the topic "Hydroturbine terms"

1

Купріянов, Євген Валерійович. "Українська термінологічна підсистема "гідротурбіни" як об'єкт комп'ютерного словника". Thesis, Харкiвський нацiональний унiверситет iм. В. Н. Каразiна, 2011. http://repository.kpi.kharkov.ua/handle/KhPI-Press/2493.

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The paper deals with the lexicographic description of Ukrainian hydroturbine term subsystem in electronic dictionary. The formation and development of computer lexicography in Ukraine and abroad are considered. The lines of research in modern Ukrainian computer lexicography are analyzed, and its development prospects are outlined. Theoretical studies of lexical unit description in paper and electronic dictionaries, performed by leading scientists, are surveyed. Based on the vast research material the analysis of hydroturbine term subsystem, in particular its sources of formation, structure and
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