Accession Number : AD0695066
Title : AEOLIAN TONES ASSOCIATED WITH RESONANT VIBRATION.
Descriptive Note : Technical rept.,
Corporate Author : MASSACHUSETTS INST OF TECH CAMBRIDGE ACOUSTICS AND VIBRATION LAB
Personal Author(s) : Leehey,Patrick ; Hanson,Carl E.
Report Date : JUN 1969
Pagination or Media Count : 51
Abstract : Measurements of oscillating lift coefficient, spanwise correlation length, Strouhal number, and radiated sound intensity were made on the same cylinder under the same test conditions over a Reynolds number range of 4000 to 6450. These measurements verified that the Curle theory of dipole radiation as expressed by Phillips for the Aeolian tone holds for a cylinder resonantly excited by a periodic wake in air. For small amplitude vibration, the increase of oscillating lift coefficient with Reynolds number accounts for the increase of sound intensity. (Author)
Descriptors : (*CYLINDRICAL BODIES, *VIBRATION), (*SOUND, AERODYNAMIC CHARACTERISTICS), VORTICES, RESONANT FREQUENCY, THEORY, OSCILLATION, LIFT, REYNOLDS NUMBER, INTENSITY
Subject Categories : Aerodynamics
Distribution Statement : APPROVED FOR PUBLIC RELEASE