摘要:
针对液体爆炸抛撒过程设计了实验装置,利用高速摄像仪进行记录。通过研究不同中心装药量和
填充液体的抛撒过程,发现在壳体破裂后,液体沿裂缝处向外飞散。药量较小时,液体分散成树枝状形态,然
后破碎成液滴;药量较大时,则形成液体环状区。对于不同粘度的液体,环状区分别由小液滴及已雾化、汽化
的液体,或大液滴、液体丝及液膜等组成,抛撒过程中其宽度越来越大,大液滴、液体丝及液膜等也逐渐破碎成
细小的液滴。
关键词:
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爆炸力学 /
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爆炸抛撒 /
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破碎 /
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液体 /
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液滴 /
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粘性
Abstract:
Anexperimentaldevicewasdesignedtoinvestigatetheprocesscharactersofliquidexplosion
dispersion.Theliquiddispersionprocesswasrecordedbyusingahigh-speedcamera.Theseveralcasesweretakenintoaccount,
whichincludeddifferentexplosivequantitiesanddifferentviscosityliquids.
Itisfoundthatassoonasthecontainerisbroken,theliquiddispersesthroughthesplits.Inthe
caseofsmallexplosivequantity,theliquiddispersionpatternlookslikeanintercrosstree,then
breaksintosmalldroplets.Inthecaseoflargerexplosivequantity,theliquiddispersionpatternlooks
likeanannulus.Theliquidannulusconsistsofsmalldroplets,vaporizedliquid,atomizedliquid,or
liquidsheet,ligamentsandbigdroplets,dependingontheviscosityoftheliquid.Thewidthofthe
liquidannulusincreasesinthedispersionprocess,andtheliquidsheet,ligamentsandbigdropletscan
breakintosmalldroplets.
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