Vibrations of a Cylindrical Shell in a Flowing Acoustic Media
A mathematical model is presented for the effect of flow on the vibrations of a thin cylindrical shell in a subsonically-flowing acoustic media. the effect of the external acoustic fluid consists of a mass-like term caused by the "virtual-mass" effect of the fluid and a "damping-like" term which accounts for the radiation of energy away from the cylinder. For a flowing medium, both of these terms are shown to involve the flow velocity. the effect of flow on the cylinder resonances is examined numerically. While not all modes are affected by the flow, there are some modes which are significantly affected. Usually, the added mass of the fluid increases with flow velocity causing a reduction in the resonant frequency of the shell mode.
L. R. Koval, "Vibrations of a Cylindrical Shell in a Flowing Acoustic Media," Proceedings of the Southeast Conference on theory and Applied Mechanics, Vanderbilt University, Jan 1978.
Southeast Conference on theory and Applied Mechanics
Mechanical and Aerospace Engineering
Article - Conference proceedings
© 1978 Vanderbilt University, All rights reserved.