Zobrazeno 1 - 10
of 149
pro vyhledávání: '"Daqing Zhou"'
Publikováno v:
Engineering Applications of Computational Fluid Mechanics, Vol 17, Iss 1 (2023)
The dynamic characteristics of the pumped storage unit (pump-turbine runner) make it highly susceptible to vibrations. Previous studies seldom addressed the clearance variation due to runner vibration, largely because of two challenges: the integrati
Externí odkaz:
https://doaj.org/article/c1ad51a42ffe45b58730b4a2e08944ed
Publikováno v:
Machines, Vol 11, Iss 10, p 965 (2023)
The existence of vortex ropes inside the draft tube significantly impacts hydraulic efficiency and operational stability, and few studies on the formation mechanism of vortex ropes and hydraulic loss problems have been explored. Hence, in this paper,
Externí odkaz:
https://doaj.org/article/abcc0597dec94158816dbb3ede71283c
Publikováno v:
Frontiers in Energy Research, Vol 10 (2023)
Externí odkaz:
https://doaj.org/article/745e6608f9704d16861dd97bceb1f943
Study on a horizontal axial flow pump during runaway process with bidirectional operating conditions
Publikováno v:
Scientific Reports, Vol 11, Iss 1, Pp 1-21 (2021)
Abstract The ultra-low head pump stations often have bidirectional demand of water delivery, so there is a risk of runaway accident occurring in both conditions. To analyze the difference of the runaway process under forward runaway condition (FRC) a
Externí odkaz:
https://doaj.org/article/7ab45e30cadf43b192c6c2e29efed217
Publikováno v:
IEEE Access, Vol 7, Pp 153382-153390 (2019)
The transient characteristics of load rejection process in pumped-storage hydropower (PSH) stations have a close relation to the safety of electric power system and hydraulic facilities. A large portion of PSHs consist of multiple units sharing one t
Externí odkaz:
https://doaj.org/article/ed237ed1bc9344dfa5800ac02d8b7978
Publikováno v:
Global Ecology and Conservation, Vol 25, Iss , Pp e01418- (2021)
Deciduous broadleaved forests and evergreen broadleaved forests constitute the majority of global subtropical forests. Subtropical vegetation has faced strong anthropogenic pressures, and many natural forests destroyed throughout history have been re
Externí odkaz:
https://doaj.org/article/fdedf7fa63e34044b77aeaf24b2b2ac6
Autor:
Maxime Binama, Kan Kan, Huixiang Chen, Yuan Zheng, Daqing Zhou, Alexis Muhirwa, Godfrey M. Bwimba
Publikováno v:
Energies, Vol 14, Iss 9, p 2690 (2021)
The adoption of pumps as turbines (PATs) in both small-scale hydroelectric plants and water supply systems has brought about various advantages, the most recognized being cost-effectiveness compared to other hydroturbines. However, due to their lack
Externí odkaz:
https://doaj.org/article/1c7530ba13ba4a41abe6286107fe580e
Publikováno v:
Renewable Energy. 180:1026-1043
The irreversible energy loss due to viscous and turbulent dissipation in a Francis turbine led to a decrease in efficiency. It is difficult to reveal the detailed energy loss distribution by either experimental method or traditional simulation method
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8188dddb27915a4a7eb9ecb863f5294b
https://doi.org/10.1016/j.renene.2021.07.041
https://doi.org/10.1016/j.renene.2021.07.041
Autor:
Chunxia Yang, Shanshan Hou, Junhui Xu, Yuquan Zhang, Yuan Zheng, E Fernandez-Rodriguez, Daqing Zhou
Publikováno v:
Water, Vol 12, Iss 3, p 757 (2020)
When sand particles are entrained into carrier flow, such as liquid, a strong interaction occurs with the surface of the metallic material, resulting in serious erosion damage. However, the effect of the physical properties of particles and materials
Externí odkaz:
https://doaj.org/article/21b1a61ff54b47479e424ea796a809dd
Publikováno v:
Advances in Mechanical Engineering, Vol 9 (2017)
Axial-flow pumps with siphon outlet are widely used in South-to-North Water Transfer Project of China for the excellent characteristics and good performance in stopping period. The reverse rotational speed and the head of impeller are the key paramet
Externí odkaz:
https://doaj.org/article/23db8212b06e439ca4c82c4bd6c79ebb