Results 31 to 40 of about 46,934 (254)
Numerical analysis for the effect of tip clearance in a low specific speed mixed-flow pump
Advances in Mechanical Engineering, 2019 To study the influence of tip clearance on performance (external characteristics, pressure fluctuation and tip loss) of a low specific speed mixed-flow pump, unsteady simulation was performed for the whole flow passage with five tip clearance sizes ( δ 0
Zhiyi Yu +3 more
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Energies, 2021 To explain the effect of tip leakage flow on the performance of an axial-flow transonic compressor, the compressors with different rotor tip clearances were studied numerically. The results show that as the rotor tip clearance increases, the leakage flow
Botao Zhang +3 more
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Low-coherence interferometric tip-clearance probe
Optics Letters, 2003 We propose an all-fiber, self-calibrating, economical probe that is capable of near-real-time, single-port, simultaneous blade-to-blade tip-clearance measurements with submillimeter accuracy (typically < 100 microm, absolute) in the first stages of a gas turbine.
Kempe A, Schlamp S, Rösgen T, Haffner K
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Effect of blade tip configuration on tip clearance loss of a centrifugal impeller.
TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B, 1987 According to the theory presented by the authors, the tip clearance loss of an un-shrouded centrifugal impeller mainly consists of two kinds of loss; one is the drag due to the leakage flow through the blade tip clearance and the other is the pressure loss to support the fluid in the thin annular clearance space between the shroud and the blade tip ...
ISHIDA, Masahiro +2 more
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Energy Performance and Flow Patterns of a Mixed-Flow Pump with Different Tip Clearance Sizes
Energies, 2017 Tip clearance between blade end and shroud is inevitable in pump operation and of great importance on pump energy performance and pressure fluctuation. As the tip clearance size increases, the head and efficiency of the mixed flow pump drop accordingly ...
Yabin Liu, Lei Tan, Yue Hao, Yun Xu
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Influences of Tip Cooling Injection on Tip Clearance Control at Design and Off-Design Incidences
International Journal of Rotating Machinery, 2009 A numerical investigation has been performed to study the influences of cooling injection from the blade tip surface on controlling tip clearance flow in an unshrouded, high-turning axial turbine cascade.
Maosheng Niu, Shusheng Zang
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An Improved Blade Vibration Parameter Identification Method considering Tip Clearance Variation
Shock and Vibration, 2021 Blade tip timing (BTT) technology is the most effective means for real-time monitoring of blade vibration. Accurately extracting the time of blade tip reaching the sensors is the key to ensure the accuracy of the BTT system. The tip clearance changes due
Liang Zhang, Qidi Wang, Xin Li
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Experimental study of controlling tip clearance flow in a pump-jet propulsor
Zhongguo Jianchuan Yanjiu, 2023 ObjectiveThis paper aims to suppress the adverse effects of tip clearance flow on the hydrodynamic performance and unsteady excitation force of a pump-jet propulsor. MethodAs for the pre-swirl stator pump-jet propulsor, an annular flexible seal structure
Ruilin HAN +5 more
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Film cooling characteristics of squealer tip of a turbine blade
Xibei Gongye Daxue XuebaoThe high-speed and high-temperature gap leakage flow in the turbine blade tip clearance directly scours the tip of the rotor blade and generates a local high-temperature region, so the active and passive control of the gap leakage flow is very important.
WU Fangfang +4 more
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Energy performance and flow characteristics of a multiphase pump with different tip clearance sizes
Advances in Mechanical Engineering, 2019 Deep sea oil resources worldwide possess great potential for exploration; however, multiphase medium technology requires urgent development. The multiphase pump has achieved great success as one of the most advanced machinery in underwater oil and gas ...
Jinsong Zhang +3 more
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