【摘要】 为了研究带空泡轴对称细长体定常来流下的水动力脉动特性,本文对四种头体模型进行了不同攻角下的空泡水洞实验,记录了水动力系数的时间序列,并对其进行了小波分析。本文运用小波分析方法从水动力脉动频率特征的角度揭示空泡流的脉动特性,是对何友声等(1997)用高速摄影方法研究空泡脉动的补充。更多还原

【Abstract】 In order to investigate the pulsation of hydrodynamic loads on cavitating axisymmetric slender bodies, an experimental study was conducted in a cavitation tunnel for four axisymmetric bodies at different degrees of attack angle. The time series of the hydrodynamic coefficients were analyzed using the wavelet method. The frequency characteristics of hydrodynamic loads on axisymmetric slender bodies are obtained using the wavelet method, which is consistant with the high speed photography information of the fluctuation of cavitation flow reported by He, et. al, (1997).更多还原