Results 11 to 20 of about 742,255 (143)

Analysis of the Formation Mechanism and Evolution of the Perpendicular Cavitation Vortex of Tip Leakage Flow in an Axial-Flow Pump for Off-Design Conditions

open access: yesJournal 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

Unsteadiness of Tip Leakage Flow in the Detached-Eddy Simulation on a Transonic Rotor with Vortex Breakdown Phenomenon

open access: yesEnergies, 2019
Tip leakage vortex (TLV) in a transonic compressor rotor was investigated numerically using detached-eddy simulation (DES) method at different working conditions.
Xiangyu Su   +3 more
doaj   +2 more sources

Tip Clearance Effect on The Tip Leakage Vortex Evolution and Wake Instability of a Ducted Propeller

open access: yesJournal of Marine Science and Engineering, 2022
The occurrence of a tip leakage vortex (TLV) is a special phenomenon of ducted propellers, which has a significant influence on the propeller’s hydrodynamic performance and efficiency.
Xidi Zhang   +3 more
doaj   +2 more sources

Review of Kelvin-Helmholtz Instability and Vortex Breakdown in Tip Leakage Vortex

open access: yesApplied Sciences
With the rapid development of renewable energy, pumped storage power plants have taken on critical functions such as frequency regulation and grid stabilization.
Hongjuan Ran   +4 more
doaj   +2 more sources

Study on the Tip Leakage Loss Mechanism of a Compressor Cascade Using the Enhanced Delay Detached Eddy Simulation Method [PDF]

open access: yesEntropy
The leakage flow has a significant impact on the aerodynamic losses and efficiency of the compressor. This paper investigates the loss mechanism in the tip region based on a high-load cantilevered stator cascade.
Shiyan Lin, Ruiyu Li, Limin Gao
doaj   +2 more sources

Transient Vortex Dynamics in Tip Clearance Flow of a Novel Dishwasher Pump

open access: yesMachines
Blade tip leakage vortex (TLV) is a critical phenomenon in hydraulic machinery, which can significantly affect the internal flow characteristics and deteriorate the hydraulic performance.
Chao Ning   +4 more
doaj   +2 more sources

Assessment of Cavitation Erosion in a Water-Jet Pump Based on the Erosive Power Method. [PDF]

open access: yesScanning, 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
europepmc   +2 more sources

Study on the Suppression of Tip Leakage Vortex in Axial Flow Pumps Based on Circumferential Grooving in the Rotor Chamber

open access: yesJournal of Marine Science and Engineering
The stability of axial flow pumps is significantly affected by the tip leakage vortex (TLV), which is generated through the entrainment of the main flow.
Haoran Wu   +4 more
doaj   +2 more sources

Control of Tip Leakage Flow in Axial Flow Compressor Cascade by Suction on the Blade Tip [PDF]

open access: yesJournal of Applied Fluid Mechanics, 2018
One of the important ways of improving axial compressor performance is to control the tip leakage flow near the endwall region. Numerical computations were conducted to investigate the impact of blade tip suction on the axial compressor cascade ...
X. Mao, B. Liu, T. Tang
doaj   +1 more source

Flow characteristics of tip leakage vortex cavitation ofducted propeller under different cavitation conditions

open access: yesZhongguo Jianchuan Yanjiu, 2023
ObjectivesThis study aims to investigate the effects of the development of tip leakage vortex (TLV) cavitations on the core characteristics of vortices. MethodsThe numerical simulation associated with the SST k-ω turbulence model and Zwart-Gerber-Belamri
Shun XU   +4 more
doaj   +1 more source

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