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采用光偏转测试系统研究了不同温度纯净水中激光空泡脉动过程,通过实验获得了激光空泡在靶表面膨胀和收缩全过程,确定了空泡的最大、最小泡半径、脉动周期和泡壁运动速度。实验采用0℃到70℃的纯净水,测量了空泡的泡半径和脉动周期等特征参量变化情况。实验结果表明,液体温度是影响空泡脉动的一个非常重要的因素,随着液体温度的增加空泡的最大泡半径和溃灭周期均呈增加趋势。给出了相应的理论解释。
The pulsation process of laser cavitation in pure water at different temperatures was studied by the light deflection test system. The whole process of laser cavitation expansion and contraction on the target surface was obtained. The maximum and minimum bubble radius, pulsation period and bubble wall motion were determined speed. Experiments using purified water at 0 ℃ to 70 ℃, measuring the bubble bubble radius and pulse period and other characteristics of the parameters change. The experimental results show that the liquid temperature is a very important factor that influences the pulsation of the bubble. With the increase of liquid temperature, the maximum bubble radius and the collapse period of the bubble all tend to increase. The corresponding theoretical explanation is given.