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...