Results 31 to 40 of about 2,352 (253)
Aerospace, 2023 Experimental and numerical studies of a linear high-loaded turbine cascade with a dual−cavity tip structure are presented in this paper. The experimental conditions contained an increase in the outlet Mach number from 0.42 to 0.92, a change in the ...
Yingjie Chen +4 more
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Applied Sciences, 2022 The performance and efficiency of a centrifugal compressor are usually affected by the highly complex 3-dimensional flow structures which develop in the flow field of the compressor.
Seongbin Hong +2 more
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Blade Loading Effects on Axial Turbine Tip Leakage Vortex Dynamics and Loss [PDF]
, 2012 umerical simulations have been carried out to define the loss generation mechanisms associated with tip leakage in un-shrouded axial turbines. Tip clearance vortex dynamics are a dominant feature of two mechanisms important in determining this loss: (i ...
Greitzer, Edward M. +11 more
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Nihon Kikai Gakkai ronbunshu, 2016 A tip leakage flow is well known to have predominant influence on a loss generation in a compressor. An impeller for a transonic centrifugal compressor is generally composed of the main and the splitter blades to gain the choke flow rate.
Masanao KANEKO, Hoshio TSUJITA
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Focusing Schlieren Visualization of Transonic Turbine Tip-Leakage Flows
International Journal of Turbomachinery, Propulsion and Power, 2020 This paper presents a focusing schlieren system designed for the investigation of transonic turbine tip-leakage flows. In the first part, the functional principle and the design of the system are presented. Major design considerations and necessary trade-
Maximilian Passmann +2 more
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The Role of Tip Leakage Vortex Breakdown in Compressor Rotor Aerodynamics [PDF]
Journal of Turbomachinery, 1998 The breakdown of tip leakage vortex has been investigated on a low-speed axial compressor rotor with moderate blade loading. Effects of the breakdown on the rotor aerodynamics are elucidated by Navier–Stokes flow simulations and visualization techniques for identifying the breakdown.
Masato Furukawa +3 more
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Effect of Tip Clearance Size on Tubular Turbine Leakage Characteristics
, 2021 To study the effect of tip clearance on unsteady flow in a tubular turbine, a full-channel numerical calculation was carried out based on the SST k–ω turbulence model using a power-plant prototype as the research object.
Baoshan Zhu +3 more
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Interference Effect of Shock Wave on Tip Leakage Vortex in a Transonic Variable Nozzle Turbine
International Journal of Turbomachinery, Propulsion and PowerThe tip leakage flow at both sides of the nozzle vane is an important factor for the reduction in turbine aerothermal performance. A strong shock wave is generated at the trailing edge of the nozzle vane under transonic condition, which can interfere ...
Xinguo Lei, Qin Luo, Hanzhi Zhang
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Tip-leakage-flow excited unsteadiness and associated control [PDF]
Tip leakage flow in turbomachinery inherently generates intense unsteady features, named self-excited unsteadiness, which significantly affects the operating stability, aerodynamic efficiency, and noise but has not been well understood.
Möller, Felix +7 more
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Reynolds Stresses and Dissipation Mechanisms in a Turbine Tip Leakage Vortex [PDF]
Volume 5: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; General, 1994 Reynolds stresses and mean flow velocities were measured throughout a tip leakage vortex in a large scale linear turbine cascade using hot-wire anemometry. An X-wire endflow probe was rotated about the probe axis using a computer controlled stepper motor. An improved solution procedure reduced the approximations involved in the Reynolds stress analysis.
John Moore +3 more
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