Results 11 to 20 of about 2,207,326 (232)
Journal of Mechanical Engineering Science and Technology, 2020 Indonesia is an agrarian country that continuously produces water, so it has the potential to develop a hydroelectric power plant. Computational Fluid Dynamic (CFD) application could be used to be an economical, quick, and efficient approach to improve ...
Akbar Navis +2 more
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EnergiesUnder extremely low-head conditions, the performance and stability of pump-turbine units are strongly influenced by the flow distortion caused by variations in guide vane opening.
Xiangyu Chen +5 more
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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
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AIP AdvancesTo address the “S” characteristic issue of pump–turbines under small opening conditions, this study investigates the impact of pre-guide vanes on the bladeless region dynamics, a critical yet underexplored area. This study investigates the changes in the
Xiangyu Chen +5 more
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Hot-air anti-icing characteristics and anti-icing structures of a zero-stage guide vane
AIP AdvancesWhen an aero engine operates under icing conditions, the windward surfaces of its intake components, such as the zero-stage guide vane, are prone to icing, posing a potential flight safety hazard. In this study, we establish a computational model for hot-
Lifeng Gong +5 more
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Numerical Investigation on Torsional Mode Self-Excited Vibration of Guide Vane in a Reversible Pump-Turbine during Pump Mode’s Starting Up [PDF]
Journal of Applied Fluid Mechanics, 2022 In reversible pump-turbines, guide vane vibrations are considered to have potentially severe consequences of noise and structural damage. Unstable torsional mode self-excited vibrations of guide vanes have been reported at small guide vane openings ...
W. Kang, Q. Liang, L. Zhou, Z. Wang
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Micro/Nanoscale Acoustic Manipulation: From Particle Control to Autonomous Microswimmers. [PDF]
Adv Sci (Weinh)This conceptual framework illustrates acoustic technology as a multifunctional platform enabling passive particle manipulation across scales and autonomous propulsion of microswimmers. ABSTRACT Acoustic manipulation and propulsion technologies have emerged as powerful platforms for micro/nanoscale control, enabled by their non‐contact operation, label ...
Chu J, Zhang L, Wang X, Li W, Liu Y.
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, 2017 In some pumped storage power station, the vibration and abnormal sound occur at the distributor of the pump turbine during the startup and shutdown process when the guide vane opening is very small. In order to find out the root cause of this unstable phenomenon, this paper conducted a deep research on the unstable phenomenon occurred at the small ...
Ji, Qingfeng +3 more
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Evaluation of Hydraulic Performance of a Type of Vertical Axis Water Microturbine for Use in Medium Pressure Water Supply Network [PDF]
آب و فاضلاب, 2021 One of the oldest methods of producing electrical energy is the use of latent energy in running water, which uses a water turbine to achieve this.
Hossein Amjadi +3 more
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