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含能材料  2015 

低能量导爆索水下爆炸的气泡脉动特性

DOI: 10.11943/j.issn.1006-9941.2015.04.012

Keywords: 气泡脉动 高速摄影 低能量导爆索

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Abstract:

为研究低能量导爆索水下爆炸气泡脉动特性,采用高速摄影技术对低能量导爆索水下爆炸进行实验。研究图像数据发现,拍摄段的低能量导爆索水下爆炸首次气泡脉动形状基本保持圆柱形,从第二次气泡脉动开始,气泡脉动的形状变为不规则圆柱形,气泡外边缘模糊,这主要是低能量导爆索外壳碎片击穿气泡所致;第一次气泡脉动的周期为21.5 ms,最大直径为11.2 cm,第二次脉动周期为15.5 ms。在第一次气泡脉动过程中,气泡膨胀时间为15 ms,收缩时间为6.5 ms,膨胀时间比收缩时间长

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