【摘要】 为了解压力脉动对泡动力学和空化现象的作用,可将压力脉动的不同随机量与气核在流场中的动态响应联系一起进行分析。结果认为:在水流强烈的紊动下,由于压力脉动的影响,气核交替地膨胀和收缩,脉动负峰值可使瞬时压力降低,气核发育时间明显缩短,促使空化提前发生。更多还原

【Abstract】 In order to understand the effect of pressure fluctuation on the bubble dynamics and cavitation, there is the analysis of a various stochastic quantity together with the dynamical respond of bubble in the flow yeild. This result is considered as: under the strong turbulent flow, as a result of influence of pressure fluctuation the bubble is expanded and contracted alternately, the negative peak of pressure fluctuation may be reduced the instantaneous pressure, cut down the growth time of bubble and the cavitation is arised early.更多还原