微小振動する弾性平板まわりの三次元流れ : 流体工学, 流体機械

概要

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Three-dimensional flow structure induced by an elastic plate vibrating with a small amplitude has been studied experimentally. We focused on the effect of frequency of the vibrating plate praticularly. In this experiment, we first visualized the flow around the vibrating plate using tracer method with a laser light sheet. Next the velocity field near the free end has been measured using laser doppler velocimeter. The results showed that the jet-like flow was discharged from the center of free end and the discharged air was mainly sucked from side of plate. The motion of fluid around the plate seemed to be influenced by not only centrifugal force caused by the elastic vibration but also by pressure distribution related to vortexes generation. A change in frequency did not make marked differences in structure of flow, except for the velocity profiles of the jet induced near the free end.
一般社団法人日本機械学会の論文
2001-01-25