Results 51 to 60 of about 41,220 (167)

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, Stefan aus der Wiesche, Franz Joos   +2 more
doaj   +1 more source

Advances in the Aerothermal Performance Enhancement of Turbine Blade Tip Configurations

Energies
A clearance necessarily exists between the blade tip and the casing in turbines. A leakage flow, formed by the accelerated gas through the tip clearance, is a major cause of turbine stage efficiency loss.
Bin Wu, Lei Ren, Renyi Wen, Chenrui Yang, Daren Zheng   +4 more
doaj   +1 more source

Characterization of the Unsteady Aerodynamics of Optimized Turbine Blade Tips through Modal Decomposition Analysis

International Journal of Turbomachinery, Propulsion and Power, 2019
The present research focused on the analysis of the leakage flows developing from advanced blade tip geometries. The aerodynamic field of a contoured blade tip and of a high-performance rimmed blade were investigated against a baseline squealer rotor ...
Bogdan C. Cernat, Sergio Lavagnoli
doaj   +1 more source

Axial compressor blades tip leakage flow control using natural aspiration. [PDF]

Sci Rep, 2023
Nejad PG, Zenouz RT.
europepmc   +1 more source

Numerical investigation on the influence of nonuniform tip clearance on rotor tip-clearance flow field structure

Heliyon
A 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, Zhipeng Li, Zhiyuan Cao, Zhihui Xu, Weihang Liu   +4 more
doaj   +1 more source

Mechanism of Stability Enhancement with Shallow ‎Reversed Slot-Type Casing Treatment in a Transonic ‎Compressor ‎

Journal of Applied Fluid Mechanics, 2021
In this paper, the influence of a shallow reversed slot-type casing treatment on the performance of a tip-critical transonic compressor has been numerically investigated. Firstly, the complex flow fields in the rotor tip region are studied in details. It
Z. D. Chi, W. L. Chu, H. G. Zhang
doaj  

Influence factors and prediction model of enstrophy dissipation from the tip leakage vortex in a multiphase pump. [PDF]

Sci Rep, 2022
Shu Z, Shi G, Yao X, Sun G, Tao S.
europepmc   +1 more source

Numerical Research on the Impact of Axial Position of Endwall Suction Slot on Tip Leakage Flow

Journal of Applied Fluid Mechanics, 2020
In order to reduce the adverse effect of the tip leakage flow of cantilever stator on compressor performance, the impact of the axial position of endwall streamwise suction slot on tip leakage flow was numerically studied.
B. Zhang, B. Liu, A. Rehman, X. Sun
doaj  

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

Machines
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, Yalin Li, Haichao Sun, Yue Wang, Fan Meng   +4 more
doaj   +1 more source

Influence of T-Shape Tip Clearance on Energy Performance and Broadband Noise for a NACA0009 Hydrofoil

Energies, 2019
In the present paper, the effect of the proposed T-shape tip on the energy performance, flow patterns and broadband noise sources of a NACA0009 hydrofoil with tip clearance is investigated. The vortex induced by the gap is simulated by means of the SST k-
Zhenwei Huang, Yadong Han, Lei Tan, Chuibing Huang   +3 more
doaj   +1 more source