The total noise changes complexly. When the bubble cavitation turns on the sheet cavitation, the total noise will reduce suddenly although the cavitation number becomes smaller.
噪声总声级的变化较为复杂，由泡空化状态转换到片空化状态，空化数虽然减小，但总声级会突然降低。
The generation and the impact force of cavitation liquid-jet depend on the bubble energy and non-dimension parameters.
空泡射流的产生及射流冲击力的大小，由泡能和无量纲参数共同决定。
The oscillation of a laser-generated cavitation bubble near a solid boundary is investigated with a home-made optical fiber sensor.
采用自行研制的光纤传感器研究了激光等离子体空泡在固壁面附近的脉动特性。
The numerical results show that for a small cavitation bubble near a rigid wall effects of surface tension on its collapsing behavior are very significant.
数值模拟结果显示，表面张力对固壁附近小空化气泡溃灭特性的影响是非常显著的。
Downstream of the valve's pressure increases, the cavitation bubble crush process process.
阀下游的压力升高，压破气泡的过程即空化过程。
With the consideration of surface tension the boundary integral method and numerical solution method for simulation of a cavitation bubble collapsing near a rigid wall are derived.
导出了考虑表面张力影响下模拟固壁附近溃灭空化气泡特性的边界积分方法及数值求解方法。
The structure of the cavitation bubble cloud is featured by the regional distribution of cavitation bubbles. Within a range of ultrasonic power levels the structure remains stable.
空化泡群的结构以空化泡在声场中的区域化分布为特征。在一定功率范围内空化泡群的结构保持稳定。
The incipient cavitation number consists of Weber's number W and m - relative velocity of cavitation bubble explosion.
初生空化数由韦伯数w和空泡相对膨胀速度M所组成。
The effects of cavitation have also been taken into account by using a bubble two phase mixture model.
采用气泡两相混合介质模型研究空化现象。
Finally, this article summarizes the law of acoustic cavitation bubble radius changes under the different parameters of sound and how to optimize acoustic cavitation.
最后本文总结了不同声参数下的空化泡半径变化规律和声空化优化的规律。
The experimental results for growth-collapse motion of a single cavitation bubble fairly agreed with theory.
气泡生长闭合运动的实验结果与理论基本上是符合的。
Thereby, measuring bubble size must be emphasized in study of reducing cavitation damage.
因此在掺气减蚀研究中，必须加强对气泡尺寸的检测。
Research on bubble cluster makes cavitation study close to engineering practice. The law of cavitation on bubble cluster is a study emphasis in further research.
空泡群的研究将使空化研究更接近于工程实际，空泡群空化规律的深入研究是下一步努力的方向。
The gas in the cavitation bubble has important significance for the producing, growing, collapsing, and lighting mechanism research of the bubble.
空化泡内气体对空化泡的产生、生长、崩溃及其发光机理研究有重要意义。
Based on the bubble dynamics and the probability theory, a method for estimating the incipient cavitation number is suggested.
基于空泡动力学及概率统计理论，本文建议了一种预测绕流体初生空化数的方法。
Compared with the acoustic resonance bubbles, larger bubbles in acoustic cavitation fields would be very difficult to collapse, which is called the steady-state cavitation bubble;
与声波共振气泡相比，较大的空化泡在声波的作用下将较难崩溃，是稳态空化泡；
A cavitation bubble in a cascade not only changes the flow field of the cascade, but also makes it difficult to calculate the flow field because of its unknown shape.
叶栅汽蚀绕流时所产生的汽穴不仅使流场发生了变化，而且其未知的形状使流场的求解变得十分困难。
When the value of sound intensity is below or above the threshold value, variations of various parameters can have some different effects on evolution process of ultrasonic-cavitation bubble.
在低于和高于瞬稳态空化转化阀值的情况下，各种参数对空化气泡运动过程的影响均有不同的变化。
This pressure rise due to air bubbles in the liquid missing scene known as cavitation bubble collapse.
这种因为压力回升气泡失踪在液体中的景象称为汽蚀溃灭。
Based on the gas re-solution and releasing physical procedure, the models of gas bubble and cavitation volumes are developed.
同时基于液体中气体的溶解和析出物理过程，提出了气泡和气穴体积计算数学模型。
Laser-induced plasma shock wave and cavitation bubble by pulsed laser ablation of a metal in water are investigated by a high-sensitive optical beam deflection technique.
采用自行研制的高灵敏度光束偏转测试系统，对脉冲激光烧蚀水下金属产生的等离子体冲击波和空泡效应进行了实验研究。
Laser-induced plasma shock wave and cavitation bubble by pulsed laser ablation of a metal in water are investigated by a high-sensitive optical beam deflection technique.
采用自行研制的高灵敏度光束偏转测试系统，对脉冲激光烧蚀水下金属产生的等离子体冲击波和空泡效应进行了实验研究。
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