超音速翼列フラッタに及ぼす吸音壁の効果 : 第2報,吸音壁効果の領域依存性

概要

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An actuator disk method for a supersonic cascade is applied to estimate the regional dependence of a sound absorbing liner effect on supersonic cascade flutter. The boundary condition on the liner depends on the wave length of the flow disturbance due to vibrating blades as well as the acoustic admittance of the liner. This implies that the regional dependence is more important in the supersonic cascade in which the difference in the wavelength between the forward and backward regions, though it subjects to two fundamental limitations: (1) the wavelength must be long compared with the cascade blading and (2) the specific acoustic admittance of the liner must be small. The aerodynamic work shows that the liner is more effective in the forward region on the supersonic cascade flutter than in the backward region for the small specific acoustic admittance.
社団法人日本機械学会の論文
1988-12-25