Zobrazeno 1 - 10
of 3 453
pro vyhledávání: '"Pressure fluctuation"'
Publikováno v:
Meitan kexue jishu, Vol 52, Iss 10, Pp 218-228 (2024)
The new gas-liquid-solid fluidized bed flotation technology can realize the efficiency recovery of coarse particles based on the principle of refloating coupling. Taking 1.0-0.5 mm coarse coal slime as the research object, the effects of water veloci
Externí odkaz:
https://doaj.org/article/3ddef35c7a404244a9b0ebfd9b4a23c6
Publikováno v:
Hangkong gongcheng jinzhan, Vol 15, Iss 5, Pp 172-178 (2024)
Aviation fuel pump has the problem of flow-induced noise in engineering application，which can affect the unit operation stability and staff's working security. To solve these problems，the noise reduction technique for fuel pump is introduced. Fir
Externí odkaz:
https://doaj.org/article/a56c106823f14917b35e2ff16e5e404c
Autor:
Shenhui Li, Bing Yao, Jiayang Pang, Demin Liu, Dan Chengmei, Dengyun Jiang, Haiqi Wang, Yuanyuan Gang, Huan Cheng, Xiaobing Liu
Publikováno v:
Energy Science & Engineering, Vol 12, Iss 10, Pp 4582-4597 (2024)
Abstract In view of problems such as the narrow efficiency area, large hydraulic vibration area, pressure pulsation, and serious sediment wear of turbines at the Futang hydropower station, the technical transformation of turbine runners was carried o
Externí odkaz:
https://doaj.org/article/27e1d7e9d0b445759a4475245353b2cb
Publikováno v:
Energy Science & Engineering, Vol 12, Iss 10, Pp 4394-4413 (2024)
Abstract This article investigates the evolution of vortex structures in the impeller channel of a multiphase pump. By capturing the vortices in the impeller channel using the vorticity and Q‐criterion, the generation location of the vortex structu
Externí odkaz:
https://doaj.org/article/51d3565d19dd49da8ae0048b5e3bce62
Publikováno v:
Journal of Applied Fluid Mechanics, Vol 17, Iss 11, Pp 2465-2480 (2024)
With the increasing complexity of the industrial production process, the transmission medium of the hydraulic turbine is no longer satisfied, and the gas-liquid two-phase mixed medium has to be considered. The presence of gas in the transmission medi
Externí odkaz:
https://doaj.org/article/522effd285d94dca89ce5865b0fd2606
Publikováno v:
Engineering Applications of Computational Fluid Mechanics, Vol 18, Iss 1 (2024)
A power failure in the pump condition combined with the rejection of the guide vanes can cause the unit to runaway, which represents a dangerous transitional process for pumped storage power stations. This process is accompanied by intense oscillatio
Externí odkaz:
https://doaj.org/article/e95b04b1d7e8469f80c902967bd83b51
Publikováno v:
Engineering Applications of Computational Fluid Mechanics, Vol 18, Iss 1 (2024)
Francis turbines, essential for stability in diverse operating conditions and variable-speed scenarios, encounter efficiency-compromising vortex rope formations in the draft tube, leading to substantial pressure fluctuations. This research delves int
Externí odkaz:
https://doaj.org/article/bc33800dc53348eda8990cd7e71afcf5
Publikováno v:
Fundamental Research, Vol 4, Iss 4, Pp 898-906 (2024)
To study the influence of an elbow inlet on the rotating stall characteristics of a waterjet propulsion pump (WJPP), a three-dimensional internal flow field in a WJPP under a straight-pipe inlet and elbow inlet is numerically simulated. By comparing
Externí odkaz:
https://doaj.org/article/16a13087fd5e4e99b80330f9d4a0af5d
Publikováno v:
Journal of Applied Fluid Mechanics, Vol 17, Iss 10, Pp 2100-2114 (2024)
This study investigates the characteristics of submerged vortices in an intake sump through a combination of numerical simulations, experimental validations, and advanced modeling techniques. The aim of this study is to gain insights into the complex
Externí odkaz:
https://doaj.org/article/88a13893bbe04a719dddb7258cd3ca68
Autor:
Zhibang RUAN, Fang WANG
Publikováno v:
Zhongguo Jianchuan Yanjiu, Vol 19, Iss 3, Pp 234-240 (2024)
ObjectiveTo solve the problems of the fluctuating pressure and acoustic radiation of a cascade in turbulence, the theory of the cascade response function is introduced and analyzed. MethodsThe theory assumes that cascade blades have no thickness, and
Externí odkaz:
https://doaj.org/article/5473f0e80ab04e2eab71687cfc283a4c