Results 31 to 40 of about 117 (105)

Experimental Study of Pressure Pulsation in a Mixed‐Flow Pump with Different Tip Clearances Based on Wavelet Analysis

open access: yesShock and Vibration, Volume 2020, Issue 1, 2020., 2020
In order to investigate the effect of various impeller tip clearances on the pressure pulsation in a mixed‐flow pump, the energy performance test and pressure pulsation experiment of a mixed‐flow pump with different tip clearances are studied simultaneously.
Leilei Ji   +5 more
wiley   +1 more source

Numerical analysis of vortex and cavitation dynamics of an axial-flow pump

open access: yesEngineering Applications of Computational Fluid Mechanics, 2022
This study focuses on the correlative mechanism of the ambient pressure and inflow uniformity on the vortex and cavitation dynamics of an axial flow pump. The shear stress transport k – ω turbulence model and Schnerr–Sauer cavitation model are applied in
Jie Gong   +3 more
doaj   +1 more source

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   +1 more source

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

open access: yesEnergies, 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   +4 more
doaj   +1 more source

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

open access: yesScience 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   +7 more
wiley   +1 more source

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

open access: yesMachines, 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   +5 more
doaj   +1 more source

UEG Week 2022 Poster Presentations

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

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

open access: yesAIP 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   +4 more
doaj   +1 more source

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

open access: yesHeat 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   +2 more
wiley   +1 more source

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

open access: yesFlow
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   +3 more
doaj   +1 more source

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