Modelingandsimulationoflaser-inducedignition usingdetailedchemicalkinetics
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摘要: 为研究含能材料在激光作用下的点火特性,从基本守恒方程组出发,基于详细化学反应动力学模 型,建立了含能材料激光点火的气相模型。利用所建立的模型对RDX在激光辐照下的点火过程进行了数值 模拟,得到了点火过程中的瞬时温度分布和组分分布,对点火特性进行了分析。计算得到的不同激光功率密 度下的RDX点火延迟时间与文献结果一致。Abstract: Inordertoinvestigateignitioncharacteristicofenergeticmaterialsradiatedbylaser,agasphasereactionmodelwasestablishedusingdetailedchemicalkinetics. Inthemodel,45speciesand 232reactionstepswasusedtodescribegasphasemechanism.Thenthemodelwasusedformodeling theprocessoflaser-inducedignitionofRDX.Temperaturedistributionsinbothcondensedandgas phasewereobtainedtoanalysetheprocessofignitionofRDX.MoleFractionsofmainspecieswere presentedtoshowthechemicalreactionprocessinthegasphase.Thecalculatedignitiondelaytimes areconsistentwiththeresultsinliteratures.
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