Results 41 to 50 of about 742,255 (143)

Investigation on the Energy Loss Characteristics in Multiphase Pump Based on Entropy Production Theory

Science and Technology of Nuclear Installations, Volume 2026, Issue 1, 2026.
The tip clearance is an essential structure in multiphase pumps, and the vortex flow caused by the leakage at the tip of the blade disturbs the internal flow field of the pump, leading to energy losses, which in turn weaken the pump’s pressure‐boosting performance and reduce its work output efficiency. To clarify the energy loss behavior at various tip
Zongku Liu, Guohong Wu, Jiaxiang Zhang, Jianglong Dou, Ce An, Bo Wang, Guangtai Shi, Mohammad Rezwan Habib   +7 more
wiley   +1 more source

Tip-leakage-flow excited unsteadiness and associated control [PDF]

Tip leakage flow in turbomachinery inherently generates intense unsteady features, named self-excited unsteadiness, which significantly affects the operating stability, aerodynamic efficiency, and noise but has not been well understood.
Möller, Felix, Wang, Zhong-Nan, Tucker, Paul Gary, Möller, Felix M., Wang, Zhong-Nan; id_orcid, Liu, Yabin, Tan, Lei, Tucker, Paul G.   +7 more
core   +1 more source

Numerical Study on Vortex Structures and Loss Characteristics in a Transonic Turbine with Various Squealer Tips

Energies, 2022
Cavity width and height are two key geometric parameters of squealer tips, which could affect the control effect of squealer tips on tip leakage flow (TLF) of gas turbines.
Yufan Wang, Weihao Zhang, Dongming Huang, Shoumin Jiang, Yun Chen   +4 more
doaj   +1 more source

UEG Week 2022 Poster Presentations

, 2022
United European Gastroenterology Journal, Volume 10, Issue S8, Page 473-1092, October 2022.
wiley   +1 more source

Large Tip Clearance Flows in High Pressure Stages of Axial Compressors [PDF]

, 2009
This thesis investigates over tip leakage where the tip clearance is large. In the high pressure stages of axial compressors the tip clearance can be typically 6% of span and the total blockage due to tip clearance can consume in excess of forty percent ...
WILLIAMS, RICHARD,JAMES
core  

Numerical Investigations of the Aerothermal Performance of Modern Turbine Blade Tip Geometries at Design and Off‐Design Conditions and Under Stationary and Moving Shroud

Heat Transfer, Volume 54, Issue 5, Page 3193-3207, July 2025.
ABSTRACT High‐pressure turbine blade tips operate under extreme thermal stress, generating significant aerodynamic losses that must be continually optimized to improve engine efficiency and durability. This study uses computational fluid dynamics (CFD) to investigate the aerodynamic and thermal behavior of advanced turbine blade tip configurations ...
Kheir‐Eddine Arrif, Zakaria Mansouri, Salaheddine Azzouz   +2 more
wiley   +1 more source

Tip Leakage Cavitation, Associated Bubble Dynamics, Noise, Flow Structure and Effect of Tip Gap Size [PDF]

, 2001
This paper focuses on the onset of tip-leakage cavitation on a fixed hydrofoil. The objectives are to investigate the effect of gap size on the flow structure, conditions of cavitation inception, the associated bubble dynamics and cavitation noise.
Gopalan, Shridhar, Katz, Joseph, Liu, Han L.   +2 more
core  

Tip leakage flow structure and cavitation inception in a ducted marine propeller

Flow
Cavitation inception and the associated flow structure in the tip region of a ducted propeller are investigated experimentally at varying advance ratios (J) using high-speed imaging and stereoscopic particle image velocimetry (SPIV) measurements in a ...
Ayush Saraswat, Chintan Panigrahi, Kirtivardhan Singh, Joseph Katz   +3 more
doaj   +1 more source

Unsteady characteristics analysis of compressors based on the proper orthogonal decomposition method [PDF]

AIP Advances
An aero-engine is often accompanied by a strong unsteady flow at near-stall condition, and increasing unsteady airflow eventually makes the engine unstable. To explore the unsteady flow characteristics, the Rotor 37 was taken as the research object.
Shan Ma, Xiaolin Sun, Lin Cheng, Yang Yu, Wen Cheng   +4 more
doaj   +1 more source

Numerical and Experimental Investigations of Axial Flow Fan with Bionic Forked Trailing Edge

Machines, 2023
To improve the performance of the aerodynamic properties and reduce the aerodynamic noise of an axial flow fan in the outdoor unit of an air conditioner, this study proposed a bionic forked trailing-edge structure inspired by the forked fish caudal fin ...
Zhong Liang, Jun Wang, Wei Wang, Boyan Jiang, Yanyan Ding, Wanxiang Qin   +5 more
doaj   +1 more source