Results 21 to 30 of about 2,352 (253)
Experimental investigation of the tip leakage flow in a low-speed multistage axial compressor
Science Progress, 2020 Casing pressure measurements and Stereoscopic Particle-Image Velocimetry (SPIV) measurements are used together to characterize the behavior of the rotor tip leakage flow at both the design and near-stall conditions in a low-speed multistage axial ...
Jun Li, Jun Hu, Chenkai Zhang
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Numerical investigation of tip leakage vortex cavitation
IOP Conference Series: Earth and Environmental Science, 2019 Tip leakage vortex cavitation is a concern for axial hydraulic turbines. Generally, cavitation may occur in the core of the TLV, often leading to erosion of the runner blades and the casing. The objective of this paper is to study the effects of this phenomenon on the hydrodynamics characteristics of a standard NACA0009 blade.
Ali Maghooli +2 more
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Energies, 2020 Unavoidable tip clearance between blade tip and casing shroud plays an important role in the performance and characteristics of a tidal propeller turbine.
Bao Ngoc Tran +4 more
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International Journal of Turbomachinery, Propulsion and Power, 2021 A Large-Eddy Simulation of the tip leakage flow of a single airfoil is carried out. The configuration consists of a non-rotating, isolated airfoil between two horizontal plates with a gap of 10 mm between the tip of the airfoil and the lower plate.
David Lamidel +3 more
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Large Eddy Simulation of Hydrofoil Tip Leakage Vortex
Journal of Physics: Conference Series, 2023 Abstract The axial-flow turbomachinery is important in water supply and drainage. However, there is a gap between the blade tip and the casing, which is easy to cause tip leakage vortex. Tip leakage of axial-flow turbomachinery has bad impact on the operation stability.
Zilong Hu +5 more
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RANS and LES computations of the tip-leakage vortex for different gap widths
, 2022 In hydraulic turbines, the tip-leakage vortex is responsible for flow instabilities and for promoting erosion due to cavitation. To better understand the tip vortex flow, Reynolds-averaged Navier–Stokes (RANS) and large eddy simulation (LES) computations
Dreyer, Matthieu +4 more
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Research on Cavitation Wake Vortex Structures Near the Impeller Tip of a Water-Jet Pump
Energies, 2023 Cavitation can cause noise in the water-jet pump. If cavitation occurs in the water-jet pump, the hydraulic components in the pump are prone to erosion. The surface erosion reduces energy delivery efficiency and increases maintenance costs.
Yun Long +7 more
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Mind the gap ::a new insight into the tip leakage vortex using stereo-PIV [PDF]
, 2022 The tip leakage vortex (TLV), which develops in the clearance between the rotor and the stator of axial hydro turbines, has been studied for decades. Yet, many associated phenomena are still not understood.
Dreyer, Matthieu +3 more
core +2 more sources
AIP Advances, 2023 This paper aims at the numerical analysis of the influence of tip clearance size on the pre-stall flow features of a transonic high-speed compressor by applying the throttle model at the exit of the compressor computational domain.
Khalid Kamal Abdelbagi
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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
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