Results 31 to 40 of about 404,526 (210)
Research on the Fault Diagnosis Method of Mine Fan Based on Sound Signal Analysis
Advances in Civil Engineering, 2021 The underground local fan and auxiliary fan also play a vital role in the underground air quality, compared with the system fan. However, the number of underground local fans and auxiliary fans is large and widely distributed, which is disadvantageous to
Shijie Song, Dandan Qiu, Sunwei Qin
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The Journal of the Acoustical Society of America, 1971 The two traditional broad-band fan noise generation mechanisms are “noise due to incident turbulence” and “noise due to vortex shedding.” These might be called “aerodynamicists' mechanisms,” since they are both rooted in fluctuating lift concepts derived from two-dimensional incompressible unsteady aerofoil theory.
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Applied SciencesThe multi-wing centrifugal fan is an important part of air conditioning systems, particularly in the automotive domain. Due to the compact structure and short blade passage of the fan, it may reduce the aerodynamic performance and generate noise.
Yizhe Huang +5 more
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Simulation of Broadband Noise Sources of an Axial Fan under Rotating Stall Conditions
Advances in Mechanical Engineering, 2014 Study on the influence of rotating stall on the aerodynamic noise of axial fan has important value to warn of the occurrence of stall through monitoring the noise variations.
Lei Zhang, Rui Wang, Songling Wang
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Frontiers in Physics, 2023 Introduction: In the present paper, experiments for a contra-rotating axial fan have been conducted to investigate the influences of the fan parameters including axial distance, blade number, blade pattern and blade thickness on the performance and noise
Yanjie Zhao +4 more
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Study on Noise Model of an Automotive Axial Fan Based on Aerodynamic Load Force
Applied Sciences, 2022 Due to the fact that the noise caused by axial fan blades of vehicles is large, which seriously affects ride comfort, and there is no effective mathematical model to quantitatively study the contribution of the various parameters of the blades to the ...
Yinhui Zhong, Yinong Li, Jun Li
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Noise Elimination and Reduction Structure for Tram Air-conditioning Return Duct
Chengshi guidao jiaotong yanjiuObjective The noise generated by air-conditioning system is a primary source of static noise in trams, with most of the interior noise originating from the air-conditioning supply fan.
LI Dengke +5 more
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Attenuation of Cross-Flow Fan Noise Using Porous Stabilizers
International Journal of Rotating Machinery, 2011 This paper presents a qualitative analysis of controlling the cross-flow fan noise by using porous stabilizers. The stabilizer was originally a folded plate.
Huanxin Lai +3 more
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CURRENT STATE OF THE PROBLEM OF THE DEVELOPMENT OF ACOUSTIC LINERS FOR GAS-TURBINE ENGINES
Авіаційно-космічна техніка та технологія, 2020 A review of current international aviation noise requirements is provided. It is shown that international requirements for aircraft noise levels are constantly increasing.
Євген Олександрович Римаренко
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Numerical Aerodynamic Evaluation and Noise Investigation of a Bladeless Fan
Journal of Applied Fluid Mechanics, 2015 Bladeless fan is a novel fan type that has no observable impeller, usually used for domestic applications. Numerical investigation of a Bladeless fan via Finite Volume Method was carried out in this study.
mohammad jafari +3 more
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