Zobrazeno 1 - 10
of 16
pro vyhledávání: '"Xian-Zhu Wei"'
Publikováno v:
Advances in Mechanical Engineering, Vol 8 (2016)
For pump–turbines, most of the instabilities couple with high-level pressure fluctuations, which are harmful to pump–turbines, even the whole units. In order to understand the causes of pressure fluctuations and reduce their amplitudes, proper nu
Externí odkaz:
https://doaj.org/article/041d86b609214b6098215f5e04d065c6
Publikováno v:
Advances in Mechanical Engineering, Vol 6 (2014)
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
Externí odkaz:
https://doaj.org/article/cfb0959142e143c8bb11e43e2b27ecc9
Publikováno v:
Advances in Mechanical Engineering, Vol 6 (2014)
This paper presents an experimental investigation of flow phenomena related to the characteristic frequencies of pressure fluctuation in Francis hydroturbine models. The experiments were carried out on two test rigs with two model runners having hydr
Externí odkaz:
https://doaj.org/article/3ef1eebb7064486a8eb0769bbcd78b6d
Publikováno v:
Advances in Mechanical Engineering, Vol 5 (2013)
A comparison study on the numerical computations by large eddy simulation (LES) and Reynolds-averaged Navier-Stokes (RANS) methods with experiment on a cylindrical cavity flow was conducted in this paper. Numerical simulations and particle image velo
Externí odkaz:
https://doaj.org/article/97e5d2404ce1426eb493f9151436950f
Publikováno v:
Journal of Hydrodynamics. 34:555-569
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a59105a1abf58d66d62c66a9f92ff1ac
https://doi.org/10.1007/s42241-022-0053-0
https://doi.org/10.1007/s42241-022-0053-0
Publikováno v:
Journal of Hydrodynamics. 33:1162-1175
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a858e4bbf9cdf91da5c34bb064b3b669
https://doi.org/10.1007/s42241-022-0105-5
https://doi.org/10.1007/s42241-022-0105-5
Autor:
Sheng-Yang Peng, Xian-zhu Wei, Zheng-Gui Li, Feng-chen Li, Dan Yao, Xiao-Yan Han, Xin-rui Li, Shi-yang Pan, Xue-Ren Wang
Publikováno v:
2019 IEEE Innovative Smart Grid Technologies - Asia (ISGT Asia).
In order to study the interaction of vortex structure,vortex evolution and vortex in a tubular turbine,the regularized helicity, Q-criterion and BVF diagnosis based on RNG k −e turbulence model and vortex dynamics diagnosis method are applied to a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b24a5610759b8264d57dddeb2c222b7f
https://doi.org/10.1109/isgt-asia.2019.8881454
https://doi.org/10.1109/isgt-asia.2019.8881454
Autor:
Feng-chen Li, Zheng-Gui Li, Yong-Zhi Zhao, Xiao-Yan Han, Shi-yang Pan, Xin-rui Li, Xiao-Bing Liu, Xian-zhu Wei
Publikováno v:
2019 IEEE Innovative Smart Grid Technologies - Asia (ISGT Asia).
The internal flow characteristics of the tubular turbine draft tube have a great influence on the operation of the turbine. By the numerical simulation, the unsteady internal flow field in a Tubular Turbine of a plant was carried out The internal flo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c9537d21e27f69077947a0e6396b0147
https://doi.org/10.1109/isgt-asia.2019.8881635
https://doi.org/10.1109/isgt-asia.2019.8881635
Publikováno v:
Journal of Zhejiang University SCIENCE A. 15:39-52
Based on the finite element method (FEM) and the Lagrange equation, a novel nonlinear model of a double disc rotor-seal system, including the coupled effects of the gravity force of the discs, Muszynska’s nonlinear seal fluid dynamic force, and the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::063ba17138e6f32d1053d130389f1606
https://doi.org/10.1631/jzus.a1300230
https://doi.org/10.1631/jzus.a1300230
Publikováno v:
Applied Mechanics and Materials. :353-358
With the operation of giant unit of hydroelectric plant represented by the Three Gorges Power Station, the vibration problem of hydraulic turbine set unit is increasingly outstanding, especially the vibration of structure induced by pressure fluctuat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3a45b7beb1795f9b2592f772b92be34f
https://doi.org/10.4028/www.scientific.net/amm.333-335.353
https://doi.org/10.4028/www.scientific.net/amm.333-335.353