Results 31 to 40 of about 37,000 (232)
Renmin Zhujiang, 2023 In order to explore the influence of the opening of the movable guide vane on the flow and pressure pulsation in the draft tube of the Francis turbine,the steady and unsteady numerical simulations were carried out by establishing a three-dimensional full-
REN Haibo, YU Bo, WANG Kui, WANG Luobin
doaj
Вдосконалення робочого процесу гідротурбін та систем їх регулювання [PDF]
, 2019 The paper provides the detail analysis of the causes of various types of the vortex motion of the turbulent flow in the inlet parts of the turbine and in the inter-blade channels of the runner.
Gasiyk, Alexander +3 more
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Financial Management, EarlyView.ABSTRACT We examine how mergers and acquisitions (M&As) enable firms to adapt to climate policy shocks. Exploiting the adoption of the Nitrogen Oxides (NOx) Budget Trading Program (NBP) across US states as an exogenous shock, we find that firms with NOx‐emitting plants subject to the NBP are more likely to engage in M&As, particularly through vertical ...
Samer Adra +3 more
wiley +1 more source
EnergiesSecondary flows in Francis turbines are induced by the presence of a gap between guide vanes and top–bottom covers and rotating–stationary geometries. The secondary flow developed in the clearance gap of guide vanes induces a leakage vortex that travels ...
Nirmal Acharya +4 more
doaj +1 more source
Energies, 2022 This article presents a study on the performance characteristics of a Francis turbine operating with various guide vane openings to determine the best operating point based on unit quantities.
Megavath Vijay Kumar +8 more
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Women's human rights in Russia: outmoded battlegrounds, or new sites of contentious politics? [PDF]
, 2015 This article draws on three pieces of qualitative research conducted with women in provincial Russia over the last 10 years. The first section analyses women's discussions of their everyday rights claims and their engagement in “consentful” forms of ...
Turbine, Vikki
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Energy Technology, Volume 14, Issue 4, April 2026.This article provides a comprehensive review of loss mechanisms in the generation stage of energy systems, covering fossil, nuclear, and renewable technologies. It examines their environmental and operational implications and shows how overlooking generation losses distorts efficiency assessments.
Pooya Parvizi +4 more
wiley +1 more source
Numerical and experimental design study of a regenerative pump [PDF]
, 2010 This paper presents the use of a commercial CFD code to simulate the flow-field within the regenerative pump and compare the CFD results with new experimental data.
Quail, Francis J. +2 more
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Oikos, Volume 2026, Issue 4, April 2026.Plasticity of diel activity rhythms may be a key element for adaptations of wildlife populations to changing environmental conditions. In the last decades, grizzly bears Ursus arctos in the Greater Yellowstone Ecosystem (GYE) have experienced notable environmental fluctuations, including changes in availability of food sources and severe droughts ...
Aurora Donatelli +4 more
wiley +1 more source
Do not be Afraid of Small High-Speed Francis Turbines
Journal of Mechanical Engineering, 2018 In the first quarter of the last century hydraulic power plants were equipped with high-speed Francis turbines even in the situation when a contemporary project manager would suggest Kaplan turbine. The reason is simple. Mr.
Libor Koudelka
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