中文摘要：

采用超声空化阈值理论计算并结合超声波清洗技术,研究了超声波对RDX晶体酸清洗效果的影响。结果表明,超声波阈值声压、阈值声强随着空化泡初始半径的增大和流体温度的升高而减少。小的初始半径和更高的温度易产生超声空化。随着温度的增加,RDX晶体酸值逐渐降低,RDX晶体酸清洗效果越来越好,但是当温度升高到一定值时,酸值变化不是很明显。超声频率低的清洗效果要优于频率高的清洗效果。增大超声功率,RDX晶体酸值先降低后略有升高,表明适当增加超声功率会降低RDX酸值,但过度提高超声功率反而使酸值增加,影响清洗效果。

英文摘要：

The influence of ultrasound on the washing effect of RDX containing acid was investigated by the theoretical calculation of cavitation threshold of ultrasound and an ultrasound cleaning technology.The results indicated that the threshold of ultrasonic pressure and threshold of ultrasonic intensity decreased with the increase in the original radius and the temperature of the fluid used for washing.Smaller original radius and higher temperature were propitious to ultrasound cavitation.As the temperature increasing,acid value of RDX decreased gradually,implying that washing effect was getting better,but when the temperature was up to a certain value,the variation of acid value was not obvious.The cleaning effect at low frequencies of ultrasound was superior to that at high frequencies.When increasing the ultrasonic power,the acid value of the water-RDX-acid system went down firstly,then up slightly,showing that appropriate increase in ultrasonic power would reduce the acid value,on the contrary,the excessive increase in ultrasonic power would increase acid value,weakening the washing effect.