Results 191 to 200 of about 1,929,704 (249)
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Slat aerodynamic noise reduction using dielectric barrier discharge plasma actuators
, 2020The airplane, during the approach to landing, use high-lift devices to produce more lift at lower airspeeds, enabling the landing on shorter runways. In this flight condition, high-lift devices are amongst the main sources of aeroacoustic noise.
G. P. Silva +3 more
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SAE Technical Paper Series, 1990
<div class="htmlview paragraph">As engine, tire, and other automobile noise is reduced and as driving speeds increase, aerodynamic noise sources on ground vehicles are becoming relatively more important. They often dominate at cruise speeds above 60 mph. Aspiration and leak noise are strong sources but generally can be controlled by known methods.
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<div class="htmlview paragraph">As engine, tire, and other automobile noise is reduced and as driving speeds increase, aerodynamic noise sources on ground vehicles are becoming relatively more important. They often dominate at cruise speeds above 60 mph. Aspiration and leak noise are strong sources but generally can be controlled by known methods.
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, 2020
Flow-induced noise and vibration problems of tube bundles in heat-exchangers exist for a long time and often cause severe destruction, performance reduction and large maintenance charge. It is essential to study the flow-induced noise in tube bundles and
Yiping Cao +4 more
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Flow-induced noise and vibration problems of tube bundles in heat-exchangers exist for a long time and often cause severe destruction, performance reduction and large maintenance charge. It is essential to study the flow-induced noise in tube bundles and
Yiping Cao +4 more
semanticscholar +1 more source
Aerodynamic Noise of Ground Vehicles
SAE Technical Paper Series, 1991<div class="htmlview paragraph">As engine, tire, and other automobile noise is reduced and as driving speeds increase, aerodynamic noise sources on ground vehicles are becoming relatively more important. They often dominate at cruise speeds of 65 mph.
Albert R. George, John R. Callister
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The Source of Aerodynamic Noise
International Journal of Aeroacoustics, 2003This paper is a tribute to Alan Powell's achievements and his extensive publications in hydro and aeroacoustics.1 The theory of Aerodynamic Noise was established by Sir James Lighthill in 1952. The beauty of Lighthill's treatment was that he based this theory on the exact Navier-Stokes equations and showed, by their rearrangement, how the source of ...
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Study on the Influence of Inlet Asymmetry on Aerodynamic Noise of Cooling Fan
Journal of Engineering For Gas Turbines and Power, 2020Experimental and numerical studies on the aerodynamic noise characteristics of a variable-speed axial fan commonly used for electronic device heat dissipation were conducted.
J. Tian +3 more
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COMPUTING AERODYNAMICALLY GENERATED NOISE
Annual Review of Fluid Mechanics, 1997▪ Abstract In contrast to computational aerodynamics, which has advanced to a fairly mature state, computational aeroacoustics (CAA) has only recently emerged as a separate area of study. Following a discussion of the classical field of aeroacoustics as introduced by Lighthill, the paper provides an overview and analysis of the problems associated ...
Valana L. Wells, Rosemary A. Renaut
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AERODYNAMIC NOISE: A CRITICAL SURVEY
Journal of Sound and Vibration, 2000Annoyance due to railway noise is a particularly sensitive aspect of new high-speed projects. Many studies have shown that aerodynamic noise becomes significant above 300 km/h and can become predominant with the reduction of the contribution of rolling noise.
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Generalized aerodynamic noise equation
The Physics of Fluids, 1975An exact aerodynamic noise equation is formulated for Newtonian fluids. The cause−effect problem is discussed. Finally, the importance of external additions of mass, momentum, and energy is examined.
Chandraker, AL, Munjal, ML
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Suppression of aerodynamic noise using dual-jet air curtains combined with perforated fairings
, 2020The dual-jet air curtain is a novel technology that, acting as a fluidic spoiler, can not only reduce aerodynamic noise but also, compared with a single-jet air curtain, can be designed to have low self noise.
Kun Zhao +5 more
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