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含能材料  2015 

高温粒子特性对气泡动力学与声辐射特性的影响

DOI: 10.11943/j.issn.1006-9941.2015.03.014

Keywords: 烟火药 水下燃烧 高温粒子 气泡

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Abstract:

为探讨烟火药水下燃烧高温粒子与水作用的声辐射特性, 基于传热传质理论构建了烟火药水下燃烧高温粒子与水作用的气泡动力学模型, 计算分析了高温粒子的初始温度和粒径对气泡动力学与声辐射特性的影响。结果表明, 当燃烧深度为1 m时, 随着高温粒子初始温度和高温粒子初始半径的增加, 所形成气泡的体积、体积变化的加速度以及声压级均随之增大:高温粒子初始温度每增加200 K, 气泡的体积、体积变化的加速度和声压级分别平均增加1.01倍、1.78倍和1.04倍; 其初始半径每增加0.4 mm, 则气泡的体积、体积变化的加速度和声压级分别平均增加1.78倍、2.28倍和1.15倍

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