Titlebook: Recent Advances in Aeroacoustics; Proceedings of an In Anjaneyulu Krothapalli,Charles A. Smith Conference proceedings 1986 Springer-Verlag

繁榮中國

Helicopter Impulsive Noise: Theoretical and Experimental Statusddressed: high-speed impulsive noise and blade- vortex interaction impulsive noise. A thorough physical explanation of both generating mechanisms is presented together with model and full-scale measurements of the phenomena. Current theoretical prediction methods are compared with experimental findi

Infirm

圓桶

A Simple Theory of the Sondhauss Tubehauss-tube. The name (which is not universally used) does not refer to the discoverer (who is unknown), but to the first systematic experimenter, whose work (1850) is quoted in Rayleigh’s famous “Theory of Sound”. The earliest reference to the effect is probably a . in Gilbert’s . of the year 1804.

沉積物

雄辯

ECG769

Noctambulant

不透明性

Waves in Turbulent Mixing Layerss are examined in depth with particular reference to wave generation on the turbulent interface of two fluids of different mean density. It is concluded that no inconsistency exists in that case and that there are no grounds for concern that the analogies are misleading.

AXIOM

The Evolution of Methods for Noise Prediction of High Speed Rotors and Propellers in the Time Domainy with thick blades, the related mathematical theory, at least as used by practicing acousticians, is in its infancy. It is a major challenge of the coming decade to rigorously analyze nonlinear effects.

PAEAN