Results 1 to 10 of about 117 (105)
Analysis of the Formation Mechanism of Secondary Tip Leakage Vortex (S-TLV) in an Axial Flow Pump [PDF]
Machines, 2022 Studies on the tip leakage vortex (TLV) are extensive, while studies on the secondary tip leakage vortex (S-TLV) are rare. To advance the understanding of the formation mechanism of the S-TLV, turbulent cavitating flows were numerically investigated ...
Hu Zhang +4 more
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Influence factors and prediction model of enstrophy dissipation from the tip leakage vortex in a multiphase pump [PDF]
Scientific Reports, 2022 In a multiphase pump, tip clearance is the required distance between the blade tip and the pump body wall of the impeller, forming tip leakage vortex (TLV), causing unstable flow and energy dissipation.
Zekui Shu +4 more
doaj +2 more sources
International Journal of Aerospace Engineering, 2021 In the present paper, the steady RANS (Reynolds-Averaged Navier-Stokes) simulations based on our independently developed CFD (Computational Fluid Dynamics) solver NUAA-Turbo 2.0, are carried out to investigate the shock wave/tip leakage vortex (SW/TLV ...
Yan Xue, Ning Ge
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Assessment of Cavitation Erosion in a Water-Jet Pump Based on the Erosive Power Method. [PDF]
Scanning, 2021 Cavitation affects the performance of water‐jet pumps. Cavitation erosion will appear on the surface of the blade under long‐duration cavitation conditions. The cavitation evolution under specific working conditions was simulated and analyzed. The erosive power method based on the theory of macroscopic cavitation was used to predict cavitation erosion.
Qiu N +5 more
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Experimental investigation of the tip leakage flow in a low-speed multistage axial compressor [PDF]
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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International Journal of Aerospace Engineering, 2023 The tip leakage vortex (TLV) induced by the tip clearance flow has a significant impact on the performance of centrifugal compressors, causing impeller flow losses and reducing the stall margin.
Shuli Hong +3 more
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Numerical investigation on the influence of nonuniform tip clearance on rotor tip-clearance flow field structure [PDF]
HeliyonA numerical study was conducted on an axial compressor, the NASA Stage 35, with three nonuniform tip clearances to understand the effect of a different shape tip clearances rotor on the compressor's performance. The results demonstrated that by modifying
Guochen Zhang +4 more
doaj +2 more sources
Numerical Analysis of the Effect of Cavitation on the Tip Leakage Vortex in an Axial-Flow Pump
Journal of Marine Science and Engineering, 2021 To understand the effect of cavitation on the tip leakage vortex (TLV), turbulent cavitating flows were numerically investigated using the shear-stress transport (SST) k–ω turbulence model and the Zwart–Gerber–Belamri cavitation model.
Hu Zhang +4 more
doaj +3 more sources
Journal of Marine Science and Engineering, 2021 To understand the formation mechanism and evolution process of the perpendicular cavitation vortex (PCV) of an axial flow pump for off-design conditions, turbulent cavitating flows were numerically investigated using the rotation curvature-corrected ...
Hu Zhang +3 more
doaj +3 more sources
Energy Science & EngineeringThe paper combines experimental and numerical simulation methods to investigate the tip leakage vortex (TLV) in an oil–gas multiphase pump. The study aims to understand the evolution and dynamic characteristics of the TLV.
Guangtai Shi +6 more
doaj +2 more sources