烟火药水下燃烧高温粒子与水作用的气泡动力学模型

为研究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,推导了单个Al₂O₃高温粒子与水作用的气泡动力学模型,计算得到了气泡半径和半径增长速度随时间变化的关系曲线,并将气泡半径计算结果与文献结果进行比较。结果表明,随着时间的增加,Al₂O₃高温粒子不断冷却,气泡半径不断增加,但增长速度越来越缓慢,计算结果与文献结果吻合较好。

Dynamic Model of Bubble Induced by the Interaction Between Pyrotechnic Composition Combustion Particles and Water

In order to investigate the characteristics of the acoustic radiation induced by the interaction between high-temperature particles (Al₂O₃) and water from the underwater combustion of pyrotechnic composition, the bubble dynamic model was deduced based on heat transfer, mass transfer theory. The bubble radius and its growth velocity were calculated, and the bubble radius calculated and the literature results were compared also. Results show that with the high temperature particle continuous cooling, although bubble radius increases constantly, growth rate becomes slowly, and the calculated results agree well with literature.