DOI：10.11883/bzycj-2022-0232舱内爆炸角隅汇聚反射冲击波超压特性研究*刘博文1，龙仁荣1，张庆明1，巨圆圆2，钟贤哲1，汪海洋1，刘文近1（1.北京理工大学爆炸科学与技术国家重点实验室，北京100081；2.海军研究院，北京100161）摘要：为研究密闭舱室内爆角隅汇聚反射冲击波超压特性，利用缩比模型进行了某典型舱室内爆试验，得到远离角隅、两面角隅和三面角隅处的冲击波载荷，结合数值模拟研究了3种特征位置处冲击波传播规律及载荷特征。研究结果表明：远离角隅处壁面反射冲击波超压曲线呈现单峰结构，反射冲击波以球面波传播；距两面角隅一定范围内冲击波超压曲线呈现双峰结构，两面角隅冲击波超压曲线呈现单峰结构，角隅汇聚反射冲击波以椭球状传播；距三面角隅一定范围内冲击波超压曲线呈现多峰结构，三面角隅冲击波超压曲线呈现单峰结构，角隅汇聚反射冲击波以球面波传播；在合理假设条件下，根据量纲分析及数值模拟结果，得到首次冲击时角隅汇聚反射冲击波载荷经验计算公式。关键词：舱内爆炸；角隅；冲击波；量纲分析中图分类号：O383;O344.7国标学科代码：13035文献标志码：AStudyonthecorneroverpressurecharacteristicsofconcentratedreflectedshockwaveduetointernalblastincabinLIUBowen1,LONGRenrong1,ZHANGQingming1,JUYuanyuan2,ZHONGXianzhe1,WANGHaiyang1,LIUWenjin1(1.StateKeyLaboratoryofExplosionScienceandTechnology,BeijingInstituteofTechnology,Beijing100081,China;2.NavalResearchInstitute,Beijing100161,China)Abstract:Inordertostudythepropagationlawandloadcharacteristicsofshockwaveatthecornerduetotheinternalblastinaclosedcabin,atypicalcabinexplosiontestwascarriedoutusingascaledmodel.Overpressureloadsofshockwaveinone-sided,two-sidedandthree-sidedcornerswereobtained.TheEULER-FCTalgorithmintheAUTODYNsoftwarewasusedtosimulatetheexplosiontestinthecabin,andtheshockwavepropagationlawandloadcharacteristicsatthreecharacteristicpositionswerestudied.Theresultsshowthattheoverpressuretimehistorycurveofthewallreflectedshockwavefarfromthecornerisasingle-peakstructure,andthereflectedshockwavepropagatesinasphericalshape.Withinacertainrangefromthetwo-sidedcorner,theshockwaveoverpressurecurveisadouble-peakstructure.Theshockwaveoverpressuretimehistorycurveattheed...
