装置参数对125kg燃料成雾性能的影响

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中图分类号：O383；TJ55 国标学科代码：13035 文献标志码：A

Abstract： The large-scale explosive dispersal andthe unconfined detonation of particle-spray-air ternary mixtures are closely relatedtoindustrial acidentsandmilitaryapplications.However，mostoftheexistingresearch focusesonthesma-scale experimentinthelaboratorywithlarge-scaleexplosivedispersalexperimentsbeingrelativelyscarce.Theinitiationstateofthe aerosolcloud determines the blast power，andthedevice structure andspecific explosive charge arethe main factors ffcting thecloud morphology.To study the damaging eect of aerosol， the large-scale dispersed experiment of fuel was carried out.The processof aerosol development was observed byhigh-speed video recording.VariationcharacteristicsofFAEcloud withdiffrentcanistersandthe specificcentral explosivewere studied.The aerosol diameter and heightwere usedto describing theaerosol shape，then they were analyzed under different initial experimentconditions.Three types of canisters wereutilized，namelythebasiccanister，thecompound canister，andthestrengthncanister，withtheprimarydiference being their radialrestraint mechanisms.The specific central explosive was adopted the T-shaped charge.Theresults show that the aerosol formatioisreliablethroughthereplicationexperiments.Becauseof itsstrongradialrestraint，thecompoundcanister has the advantage in the aerosol diameters. The aerosol diameters of compound canister can reach ，compared to strong canister coverage area increased by 13 % .Therefore，the compound canister with the specific central explosive of 0 . 8 % has the best aerosol performance for fuel.On this basis，characteristics of the aerosol were further analyzed.The optimal secondarydetonationdelaytimeis .Thecalculatingaerosol concentration before burst is and the chemical equivalent ratio of fuel to oxygen in theair is 0.54.

Keywords：FAE cloud formation； explosion dispersion；device structure； specific central explosives

对自由场条件下大体积燃料抛撒成雾的研究，在民用和军事工业（例如火山喷发、工业粉尘爆炸事故、湍流爆轰等[-3]）中具有重要的理论和应用价值。（剩余9449字）