【摘要】 本文建议了用随机脉冲过程模拟空泡溃灭时作用在某一固体壁上的冲击压力;给出了估计该数学模型中各参数的方法;得到了当频率不是很高时,空化荷载的功率谱接近于白谱的结论;还讨论了通气对荷载谱的影响.更多还原

【Abstract】 In this paper the pressure acting on a solid wall caused by cavitation bubbles collapse is simulated by a random pulse process. The method for determining the parameters involved in the mathematical model is described. A conclusion is reached that when the frequency is not too high, the power spectrum of the pressure approximates that of the white noise. The effect of aeration on the power spectrum is also discussed.In this paper the pressure acting on a solid wall caused by cavitation bubbles collapse is simulated by a random pulse process. The method for determining the parameters involved in the mathematical model is described. A conclusion is reached that when the frequency is not too high, the power spectrum of the pressure approximates that of the white noise. The effect of aeration on the power spectrum is also discussed.更多还原