Results 1 to 10 of about 94,894 (308)
Axial compressor blades tip leakage flow control using natural aspiration. [PDF]
Sci Rep, 2023 AbstractBlades tip leakage flow structure in axial compressors has dominant effects on flow stability and losses. Accordingly, in the present study, three different ideas are introduced for alleviation of undesirable effects of the blades tip leakage flow. These ideas utilize circumferential tape, S-shape nozzle and natural aspiration slot, all imposed
Nejad PG, Zenouz RT.
europepmc +4 more sources
Control and Entropy Analysis of Tip Leakage Flow for Compressor Cascade under Different Clearance Sizes with Endwall Suction [PDF]
Entropy, 2020 To investigate the influence of the change of tip clearance size on the control effect of the endwall suction, the effects of endwall suction on the aerodynamic performance of the axial compressor cascade were studied numerically.
Botao Zhang +3 more
doaj +2 more sources
Wavelet Analysis of a Blade Tip-Leakage Flow [PDF]
AIAA Journal, 2018 The secondary flow generated by the clearance between an isolated airfoil tip and an end-plate is analyzed by means of a zonal large-eddy simulation, in comparison with available experimental data. The flow around the tip clearance is described with full
Boudet, Jérôme +4 more
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The axial tip clearance leakage analysis of the squealer blade tip for the liquid-ring pump [PDF]
Scientific ReportsThe gas-liquid two phase leakage flow in the clearance of Liquid ring pump has severe negative impact on its hydraulic performance. In order to analyze the flow structure of leakage flow and suppress it, the squealer blade tip was introduced to Liquid ...
Xiaoxiao Wei +4 more
doaj +2 more sources
TASK Quarterly, 2006 Mechanisms of formation of the tip leakage over shrouded and unshrouded rotor blades are described in the paper. The loss diagrams for these two types of leakage in a wide range of cascade inlet and outlet flow angles are also plotted. They are obtained
PIOTR LAMPART
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Zonal large-eddy simulation of a tip leakage flow [PDF]
International Journal of Aeroacoustics, 2016 The flow induced by the clearance between the tip of an isolated airfoil and an end-plate is investigated numerically, using a zonal approach with large-eddy simulation in the region of interest.
Boudet, Jérôme +4 more
core +5 more sources
Spectral proper orthogonal decomposition of compressor tip leakage flow [PDF]
Physics of Fluids, 2021 To identify the spatiotemporal coherent structure of compressor tip leakage flow, spectral proper orthogonal decomposition (SPOD) is performed on the near-tip flow field and the blade surface pressure of a low-speed compressor rotor. The data used for the SPOD analysis are obtained by delayed-detached eddy simulation, which is validated against the ...
Xiao He +3 more
openaire +3 more sources
Influence of grooved rib tip structure on tip loss and heat transfer in a gas turbine blade
Frontiers in Energy Research, 2022 This study focuses on the effects of three groove tip structures (full rib groove tip, partial rib tip on the suction side, and partial rib tip on the pressure side) on tip leakage flow, aerodynamic characteristics of a cascade, and heat transfer in a ...
Zhiqi Kong, Tianyi Zhang, Wei Du
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Understanding of tip clearance flow structure in high speed mixed flow compressor
Propulsion and Power Research, 2023 This paper addresses the necessity to make a physical interpretation of a highly complex three-dimensional tip clearance flow field study for high-speed mixed-flow compressor having stage exit static pressure to inlet total pressure ratio of 3.8 with 39 ...
Hemant Kumar, Chetan S. Mistry
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Aerospace, 2023 The accurate prediction of tip leakage flow is the premise for flow mechanism analysis and compressor performance optimization. The detached eddy simulation (DES) method, which compromises cost and accuracy, has excellent potential for a high Reynolds ...
Shiyan Lin, Ruiyu Li, Limin Gao, Ning Ge
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