Results 231 to 240 of about 22,676 (265)

Prediction of mean flow and over-tip shock distribution in pressure-driven tip leakage flows

Physics of Fluids
The flow across the blade tip clearance in turbomachinery is simplified as pressure-driven tip leakage flow (TLF) by isolating it from the mainstream. Based on schlieren visualization and numerical simulations, several common features of TLF are achieved. Consequently, a diffusion model is proposed to evaluate the mean flow and shock motions within the
Xiaolong Tang, Xiaoquan Yang, Fei Wu, Mingsui Yang   +3 more
openaire   +1 more source

The Simulation of Tip-Leakage Flow and Its Induced Noise

2018
In this study, the large eddy simulation (LES) numerical method is applied to simulate the flow filed of a foil with the gap between tip and end plate. The flow field details of three different tip gaps were simulated. The noise source induced by the tip-leakage flow was also predicted by LES method, and then the noise characters of foils with ...
Shucheng Zhai, Ziying Xion, Hongxing Sun
openaire   +1 more source

Tip leakage flow in a linear turbine cascade

2020
An experimental investigation was performed to study the details of flow in the tip clearance gap of a linear turbine blade cascade. The cascade was designed and built to be geometrically similar to the earlier VPI&SU cascade; however, the new cascade also had a tip gap (2.1 percent of blade height) and two endwall boundary layer bleeds upstream of the
openaire   +1 more source

Experimental investigation on spatial-temporal evolution of tip leakage cavitation in a mixed flow pump with tip clearance

International Journal of Multiphase Flow, 2023
Lei Tan, Yadong Han
exaly  

NUMERICAL VISUALIZATION OF BLADE TIP LEAKAGE FLOW

Journal of Flow Visualization and Image Processing, 2006
Jr-Ming Miao, Chen-Yuan Wu, Chang-Hsien Tai   +2 more
openaire   +1 more source

Aerodynamic and aeroacoustics characterisation of tip leakage flow [PDF]

Among the various noise sources related to ducted fans, the noise generated by the interaction of tip leakage flow with the blade’s geometric singularities is one of the least understood. This thesis deals with identifying the mechanisms involved in the generation and reduction of tip leakage noise for a single stationary aerofoil, which enables a ...
openaire  

The effects of stator-rotor interaction on unsteady characteristics of turbine tip leakage flow

Aerospace Science and Technology, 2023
Xingsi Han
exaly  

Influence of rotating speed on tip leakage vortex in a mixed flow pump as turbine at pump mode

Renewable Energy, 2020
Lei Tan, Yadong Han
exaly  

Energy loss mechanism due to tip leakage flow of axial flow pump as turbine under various operating conditions

Energy, 2022
Yuan Zheng, Qiang Gao, Lian Shen
exaly  

The effects of tip gap variation on transonic turbine blade tip leakage flow based on VLES approach

Aerospace Science and Technology, 2021
Xingsi Han
exaly