流動解析によるキャビティ内壁の励振力の予測

概要

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It is well known that the flow past a cavity can sometimes excite acoustic or structural vibration. Numerical analysis using a two-dimensional finite-volume method was applied to investigation of the exciting forces associated with cavity structure. Forced oscillating flows with various frequencies at the bottom wall of a cavity were employed for an analytic model of the vibration. The pressure fluctuation and the phase difference between the fluctuating pressure and the acceleration of forced oscillation obtained by the numerical simulation technique were qualitatively in agreement with the values measured in experiments. The prediction of stable and unstable regions of vibration in a cavity wall using the present technique has become feasible.
一般社団法人日本機械学会の論文
1996-01-25