Results 21 to 30 of about 49,702 (288)
Leakage Flow Characteristics in Blade Tip of Shaft Tubular Pump
Journal of Marine Science and Engineering, 2023 The shaft tubular pump device is widely used in various water diversion projects because of its ultra-low head and large flow characteristics. Due to the tip clearance between the blade and the shroud, it is easy to cause hydraulic mechanical performance
Zhikang Lin +5 more
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Aerospace, 2023 In an axial-flow turbine of a jet engine used for aircraft propulsion, the passage vortex (PV) and tip leakage vortex (TLV) generated inside the blade passage deteriorate the aerodynamic performance.
Takayuki Matsunuma, Takehiko Segawa
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Experimental and Numerical Analysis of the Flow Inside a Configuration Including an Axial Pump and a Tubular Exchanger [PDF]
, 2010 In centrifugal and axial pumps, the flow is characterized by a turbulent and complex behavior and also by physical mechanisms such as cavitation and pressure fluctuations that are mainly due to the strong interactions between the fixed and mobile parts ...
Sofiane Khelladi +7 more
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Research on Numerical Calculation for Aerodynamic Characteristics Analysis of Ducted Fan [PDF]
Xibei Gongye Daxue Xuebao, 2018 By taking a typical ducted fan system model as the research object, the unsteady aerodynamics calculation method is established based on slide dynamic mesh technology.
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Time-of-flight tip-clearance measurements [PDF]
35th Joint Propulsion Conference and Exhibit, 1999 In this paper a time-of-flight probe system incorporating the two integrated fiber optic probes which are tilted equally relative to the probe holder centerline, is applied for the first time to measure the tip clearance of an advanced fan prototype. Tip clearance is largely independent of the signal amplitude and it relies on timing measurement.
H. Dhadwal, A. Kurkov, D. Janetzke
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Effects of the Shock Wave Structure on the Tip Clearance Leakage Flow in Transonic Compressor Rotors
International Journal of Aerospace Engineering, 2023 The interaction between shock waves and the tip clearance flow in a transonic compressor rotor has important effects on the tip clearance flow and the rotor aerodynamic performance.
Xinlong Ye, Zhenggui Zhou
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Computed Effect of Varying Tip Clearance and Axial Gap on Gas Turbine Stage Performance Part (I): (Steady Flow) [PDF]
The Egyptian International Journal of Engineering Sciences and Technology, 2016 turbine, imprecise axial gap and tip clearance are two significant sources ofinefficiency. This work investigates the effect of change in parameters such asaxial gap and tip clearance on axial flow gas turbine used in power generation.Different ...
M Gobran, M Nassief, M Shaalan, W Elwan
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An accelerated medial object transformation for whole engine optimisation [PDF]
, 2014 The following paper proposes an accelerated medial object transformation for the tip clearance optimisation of whole engine assemblies. A considerable reduction in medial object generation time has been achieved through two different mechanisms.
Andy J. Keane +7 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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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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