裝置參數(shù)對125kg燃料成霧性能的影響

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中圖分類號：O383；TJ55 國標(biāo)學(xué)科代碼：13035 文獻(xiàn)標(biāo)志碼：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

對自由場條件下大體積燃料拋撒成霧的研究，在民用和軍事工業(yè)（例如火山噴發(fā)、工業(yè)粉塵爆炸事故、湍流爆轟等[-3]）中具有重要的理論和應(yīng)用價值。（剩余9449字）