Zobrazeno 1 - 10
of 461
pro vyhledávání: '"vortex rope"'
Publikováno v:
Journal of Applied Fluid Mechanics, Vol 17, Iss 11, Pp 2313-2332 (2024)
Small hydro technology is playing a crucial role in advancing sustainable, clean energy policies as part of the global hydro development strategy. Its contribution to social and economic development is becoming more prominent, particularly in ensurin
Externí odkaz:
https://doaj.org/article/3588944efc4e4d92adef2ca842789861
Autor:
LI Jinfeng, CHEN Wuguang, ZHANG Zhengchuan, XU Yongliang, LI Kaiying, YIN Junlian, WANG Dezhong
Publikováno v:
Shanghai Jiaotong Daxue xuebao, Vol 58, Iss 8, Pp 1188-1200 (2024)
The limitation of traditional measurement technology in gas-liquid two-phase flow measurement is broken through.The liquid velocity field and vortex rope morphology from two vertical directions were measured synchronically by using particle image vel
Externí odkaz:
https://doaj.org/article/d49cdf5dfbe14df9b9aec1fc1e182833
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:
Journal of Applied Fluid Mechanics, Vol 17, Iss 4, Pp 770-784 (2024)
The hydraulic turbines, especially Francis turbines, frequently run at part load (PL) conditions to meet the dynamic energy needs. The flow field at the runner exit changes significantly with a change in the operating point. At PL, flow instabilities
Externí odkaz:
https://doaj.org/article/e0fc2f4e1b104de4ba13fd4034ad4c73
Akademický článek
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Publikováno v:
Journal of Applied Fluid Mechanics, Vol 17, Iss 1, Pp 219-232 (2023)
For the purpose of automatic generation control (AGC), a portion of the propeller hydro-turbine units in China is adjusted to operate within a restricted range of 75%-85% load using computer-controlled AGC strategies. In engineering applications, it
Externí odkaz:
https://doaj.org/article/261d09cf4638486382206239b0b7fb22
Akademický článek
Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
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Publikováno v:
Engineering Applications of Computational Fluid Mechanics, Vol 17, Iss 1 (2023)
Precessing vortex rope (PVR) plays a key role in inducing hydraulic resonance in Francis turbines operating at partial load, possibly degrading power plant stability and availability. Air injection into the runner cone is a suitable mitigating altern
Externí odkaz:
https://doaj.org/article/04074f7d25dc4a5b955d4c1fb466be63
Publikováno v:
Symmetry, Vol 16, Iss 4, p 416 (2024)
In hydro turbines, the draft tube vortex rope is one of the most crucial impact factors causing pressure pulsation and vibration. It is affected by operating conditions due to differences in the flow rate and state and can be symmetric or asymmetric
Externí odkaz:
https://doaj.org/article/2f78cb3029e54c41aabfacafb9a0bdcd
Publikováno v:
Water, Vol 16, Iss 1, p 13 (2023)
Pump turbines operate under various off-design conditions, resulting in complex internal flow patterns. This study employs Reynolds-averaged Navier–Stokes (RANS) numerical methods to investigate the flow characteristics of a prototype pump turbine
Externí odkaz:
https://doaj.org/article/af365717a95d4cbaaf43bc8d4ba26e4d