Search Results - "Li, Deyou"

Entropy production analysis of hysteresis characteristic of a pump-turbine model by Li, Deyou, Wang, Hongjie, Qin, Yonglin, Han, Lei, Wei, Xianzhu, Qin, Daqing

“…•An interesting hysteresis phenomenon was analyzed using entropy production theory.•A function was used to calculate the entropy production in the wall…”
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Unsteady simulation and analysis for hump characteristics of a pump turbine model by Deyou, Li, Hongjie, Wang, Gaoming, Xiang, Ruzhi, Gong, Xianzhu, Wei, Zhansheng, Liu

“…Presently, hydropower is the world's largest source of renewable energy. Pump Storage Power Plant develops the rapidly because of its effective electricity…”
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Optimization of Setting Angle Distribution to Suppress Hump Characteristic in Pump Turbine by Qin, Yonglin, Li, Deyou, Wang, Hongjie, Wei, Xianzhu

“…Pump turbines play a quite important role of peak-valley shifting in the grid, and the hump margin is a critical criterion related to the safety and stability…”
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Control mechanisms of different bionic structures for hydrofoil cavitation by Yang, Qi, Li, Deyou, Xiao, Tinglan, Chang, Hong, Fu, Xiaolong, Wang, Hongjie

“…•Large eddy simulation method provides high precision numerical results of cavitation flow.•The bionic leading-edge protuberances induce reverse rotating…”
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Entropy Production Analysis for Hump Characteristics of a Pump Turbine Model by Li, Deyou, Gong, Ruzhi, Wang, Hongjie, Xiang, Gaoming, Wei, Xianzhu, Qin, Daqing

“…The hump characteristic is one of the main problems for the stable operation of pump turbines in pump mode.However,traditional methods cannot reflect directly…”
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Application of entropy production theory to hydro-turbine hydraulic analysis by Gong, RuZhi, Wang, HongJie, Chen, LiXia, Li, DeYou, Zhang, HaoChun, Wei, XianZhu

“…The understanding of hydraulic behavior in the hydro turbine requires the detailed study of fluid flow in the turbine. Previous methods of analyzing the…”
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Dynamic characteristics of a running away pump-turbine with large head variation: 1D + 3D coupled simulation by Fu, Xiaolong, Li, Deyou, Song, Yechen, Wang, Hongjie, Yang, Jialiang, Wei, Xianzhu

“…The dynamic characteristics of running away pump turbines (PTs) with a large head variable amplitude have not been understood thus far, primarily because of…”
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Influence of axial clearance on the performance characteristics of a turbopump by Li, Deyou, Ren, Zhipeng, Fan, Rong, Chai, Yafei, Gong, Ruzhi, Wang, Hongjie

“…To evaluate the influence of axial clearance on the performance characteristics in turbopumps, numerical simulations of an entire flow passage were carried…”
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Analysis of transient flow in a pump-turbine during the load rejection process by Fu, Xiaolong, Li, Deyou, Wang, Hongjie, Zhang, Guanghui, Li, Zhenggui, Wei, Xianzhu

“…The transient flow in pump-turbines during the load rejection process is very complex. However, few studies have been conducted on three-dimensional (3-D)…”
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Investigations on Pressure Fluctuations in the S-Shaped Region of a Pump–Turbine by Wang, Hongjie, Wang, Jianpeng, Gong, Ruzhi, Shang, Chaoying, Li, Deyou, Wei, Xianzhu

“…Hydraulic pumped storage is a special power generation and electricity shortage technology, which is usually operated with thermal power and nuclear power…”
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Flow excitation mechanisms of unbalanced impeller forces after pump power-trip of ultra-high head pump-turbines by Fu, XiaoLong, Li, DeYou, Lv, JingWei, Yang, Biao, Wang, HongJie, Wei, XianZhu

“…To elucidate the dynamic mechanisms of unbalanced impellers in ultra-high head pump-turbines (PTs), this study employed a one- and three-dimensional coupled…”
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High-amplitude pressure fluctuations of a pump-turbine with large head variable ratio during the turbine load rejection process by Fu, XiaoLong, Li, DeYou, Song, YeChen, Wang, HongJie, Wei, XianZhu

“…Large-head variable-amplitude pump turbines (PTs) encounter serious transient hydraulic instability issues. To explore the evolution mechanisms of pressure…”
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Runner cone optimization to reduce vortex rope-induced pressure fluctuations in a Francis turbine by Li, DeYou, Yu, Liang, Yan, XuYu, Wang, HongJie, Shi, Qian, Wei, XianZhu

“…Pressure fluctuations induced by a vortex rope are the major causes of hydraulic turbine vibration in partial load operating conditions. Hence, an effective…”
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Analysis of Pressure Fluctuations in a Prototype Pump-Turbine with Different Numbers of Runner Blades in Turbine Mode by Li, Deyou, Sun, Yuekun, Zuo, Zhigang, Liu, Shuhong, Wang, Hongjie, Li, Zhenggui

“…In pump-turbines, high pressure fluctuation is one of the crucial instabilities, which is harmful to the stable and effective operation of the entire unit…”
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Vortex Distribution and Energy Loss in S-Shaped Region of Pump Turbine by Zeng, Hongji, Li, Zhenggui, Li, Deyou, Chen, Hao, Li, Zhihong

“…Research on the S-shaped region of pump turbines requires a detailed understanding of the vortex distribution law and energy losses under various working…”
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Experimental Vortex Flow Patterns in the Primary and Secondary Pump Intakes of a Model Underground Pumping Station by Guo, Miao, Zuo, Zhigang, Liu, Shuhong, Zou, Huijun, Chen, Baoyu, Li, Deyou

“…In order to provide specific references and suggestions for the design and operation of underground pumping stations, in this paper, an experimental model of…”
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Analysis of vorticity dynamics for hump characteristics of a pump turbine model by Li, Deyou, Gong, Ruzhi, Wang, Hongjie, Han, Lei, Wei, Xianzhu, Qin, Daqing

“…Conventional parameters based on CFD methodology for the investigation on hump characteristics of a pump turbine cannot reflect the dynamic interaction…”
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Characteristics of Asymmetric Curls of a Halbach Hydroturbine Main Shaft Magnetofluid Sealing Device under Random Rotational Speed Work Conditions by Zhenggui, Li, Jie, Cheng, Deyou, Li, Xiaohui, Deng, Bing, Dong, Xiaobing, Liu, Biao, Ma, Xinrui, Li

“…The operational rotational speeds of hydroturbines change arbitrarily within a small range, and the friction power consumption caused by the asymmetric curl…”
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Dynamic instability of a pump-turbine in load rejection transient process by Fu, XiaoLong, Li, DeYou, Wang, HongJie, Zhang, GuangHui, Li, ZhengGui, Wei, XianZhu

“…Load rejection is one of the most crucial transient processes in pump-turbines. However, only a few achievements on the internal flow mechanism of…”
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Investigation of friction power consumption and performance of a water turbine seal based on the imbalanced rotation of nano-magnetic fluids by Li, Zhenggui, Zhang, Jiarong, Li, Deyou, Chai, Xin, Li, Bo, Yang, Fengyu

“…The calculation of friction power consumption and the performance of nano-magnetic fluids in sealed water turbines have proved to be hurdles in studies on…”
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