Experimentalinvestigationonloadingcharacteristics

ofunderwaterexplosionfromabottomcharge

YangLi; WangYu; WangBin; HuangChao

doi:10.11883/1001-1455(2013)02-0175-06

Volume 33 Issue 2

Apr. 2014

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YangLi, WangYu, WangBin, HuangChao. Experimentalinvestigationonloadingcharacteristicsofunderwaterexplosionfromabottomcharge[J]. Explosion And Shock Waves, 2013, 33(2): 175-180. doi: 10.11883/1001-1455(2013)02-0175-06

Citation:

YangLi, WangYu, WangBin, HuangChao. Experimentalinvestigationonloadingcharacteristics ofunderwaterexplosionfromabottomcharge[J]. Explosion And Shock Waves, 2013, 33(2): 175-180. doi: 10.11883/1001-1455(2013)02-0175-06

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Experimentalinvestigationonloadingcharacteristics ofunderwaterexplosionfromabottomcharge

doi: 10.11883/1001-1455(2013)02-0175-06

1.
NavalAcademyofArmament,Beijing100161,China;
2.
NationalKeyLaboratoryofShock WaveandDetonationPhysics,InstituteofFluidPhysics,

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Corresponding author: YangLi
Publish Date: 2013-03-25

Abstract

Abstract

Toinvestigatetheshockwavepropagationandthebubblemotionofunderwaterexplosion fromabottomcharge,principleexperimentsofunderwaterexplosionwereconductedinawatertank. High-speedcameraswereusedtocapturethegasbubbleformationandcollapse,andpressuretransducerstorecordpressuretimehistoriesatseverallocations. Comparedwiththeloadingcharacteristics ofthefree-fieldunderwaterexplosion,someconclusionswereobtained.Underwaterexplosionfroma bottomchargehasaseriescomplexloadingeffects:shockwavereflection,bubblesharpexpansion, bubblejetting,andsoon.Duetothebottominfluence,thebubbleshapeandbubblemigrationare significantlydifferentfromthoseofthefree-fieldunderwaterexplosion,andtheshockwavepropagationtakesonanexponentialdecay, buthasnotthesecondpressurewave.Forthepointsnearthebottomofthewatertank, theincidentwavecanbestrengthenedbytheshockwavereflectedfromthe bottom.
- mechanicsofexplosion,
- underwaterexplosion,
- bubble,
- bottomcharge,
- shockwave