Titlebook: Aero- and Hydro-Acoustics; IUTAM Symposium, Eco Geneviève Comte-Bellot,John E. Ffowcs Williams Conference proceedings 1986 Springer-Verlag

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薄膜

Der koordinationsorientierte Ansatzor various features in the problem of sound generation in the ocean. Some particular situations are examined in detail. It is shown that, whenever the ocean surface is non-linearly deformed, any quadrupole radiations become negligible; the most significant sound arises from surface motions. This sur

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https://doi.org/10.1007/978-3-322-97814-1ct to the fluid (e.g., loudspeakers), or 3) by surfaces moving with respect to the fluid. This paper discusses the last case. The noise radiated can be either due to the motion of the volume of the body directly, due to the steady or unsteady forces on its surfaces from their motion relative to the

MULTI

https://doi.org/10.1007/978-3-322-97814-1op engines. If this proves to be the case, public acceptance and thus the ultimate success of the ATP will depend on the degree to which the passenger cabin can be isolated from propeller noise. This raises the possibility that much of the gain in fuel efficiency anticipated for the ATP-powered tran

PAGAN

https://doi.org/10.1007/978-3-642-48209-0ntense audible tones and shortened fatigue life. Historically, most researches on such turbo-blade “singing” have focussed on the prediction of the vortex shedding frequency and on the reduction of offending vibration levels by reshaping the trailing edges. The associated control measures effectivel

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