Results 231 to 240 of about 42,931 (262)

Characteristics of tip leakage flow inside the tip clearance of an axial compressor

Physics of Fluids
The study of flow field characteristics inside the tip clearance is essential for understanding tip leakage flow (TLF) generation mechanisms. This paper investigates the TLF flow field in a single-stage axial compressor using a particle image velocimetry visualization system, alongside proper orthogonal decomposition and omega vortex identification ...
Zhihong Liao, Zhiliang Xue, Jianqi Shen, Yonggang Zhou, Qiwen Jin, Xuecheng Wu   +5 more
openaire   +1 more source

Reduction of tip-leakage noise by using over-tip liners

28th AIAA/CEAS Aeroacoustics 2022 Conference, 2022
Sergi Palleja-Cabre, Ivan Saraceno, Suresh Palani, Chaitanya C. Paruchuri   +3 more
openaire   +1 more source

The Influence of Boundary Conditions on Tip Leakage Flow

Journal of Turbomachinery, 2013
Much of the current understanding of tip leakage flow has been derived from detailed cascade studies. Such experiments are inherently approximate since it is difficult to simulate the boundary conditions that are present in a real machine, particularly the secondary flows convecting from the upstream stator row and the relative motion of the casing and
John D. Coull, Nicholas R. Atkins
openaire   +1 more source

Blade scale effects of tip leakage

1990
The effects of blade-tip leakage in a turbine are investigated by modeling the stage as an incomplete actuator disk. It is found that the spanwise flow redistribution due to the gap is such as to produce a uniform unloading of the blades, despite the very concentrated leakage.
Martinez-Sanchez, Manuel, Gauthier, R. P.   +1 more
openaire   +1 more source

Over-Tip Leakage Loss for a Gutter-Type Turbine Blade Tip

Transactions of the Korean Society of Mechanical Engineers - B, 2021
Seon Woo Bong, Sang Woo Lee
openaire   +1 more source

Tip Leakage Flow on the Transonic Compressor Rotor

Transactions of the Korean Society of Mechanical Engineers B, 2003
It is known that tip clearance flows reduce the pressure rise, flow range and efficiency of the turbomachinery. So, the clear understanding about flow fields in the tip region is needed to efficiently design the turbomachinery. The Navier-Stokes code with the proper treatment of the boundary conditions has been developed to analyze the three ...
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  

Tip leakage losses in a linear turbine cascade

2021
An investigation of tip leakage flow and its effects on loss production was performed on a large-scale linear turbine cascade having a tip gap measuring 2.1% of the blade height. The Reynolds number based on axial chord and cascade exit velocity was 4.5x10⁵.
openaire   +1 more source

Tip Leakage Flow In a Mixed-flow Pump

The numerical results used to describe the special flow features/characteristics of the mixed-flow pump in this chapter were obtained by employing the computational methodology described in Chapter 3 which includes the pump model, mesh generation, turbulence models and their near wall treatment, and the boundary conditions.
Wei Li, Leilei Ji, Ramesh Agarwal, Weidong Shi, Ling Zhou   +4 more
openaire   +1 more source

Leakage and friction characteristics at sliding surface of tip seal in scroll compressors

International Journal of Refrigeration, 2021
Mitsuhiro Fukuta
exaly