多层管状发射药燃烧性能的数值计算  

Numerical Calculation of Combustion Property for Multilayer Tubular Propellant

作　　者：马忠亮[1] 鲁坤[1] 范雪坤[1] 萧忠良[1] 

机构地区：[1]中北大学化工与环境学院,山西太原030051

出　　处：《火炸药学报》2011年第2期69-72,共4页Chinese Journal of Explosives & Propellants

摘　　要：为了模拟和改善层状发射药的内弹道性能和燃烧性能,建立了一种多层管状发射药的燃烧模型。在服从几何燃烧定律条件下,通过多层管状发射药的形状函数推导出其Γ-Ψ表达式。用Γ-Ψ曲线研究了多层管状发射药的缓燃层厚度与药片初始总厚度比、内外层的燃速比以及药柱厚度与药柱长度之比对其燃烧性能的影响。结果表明,（1）多层管状发射药缓燃层厚度与药片初始总厚度比不能太大,较佳值为0.3-0.6;（2）多层管状发射药内外层药的燃速比值越大,其燃烧渐增性越好;（3）多层管状发射药在保证能具有明显燃烧渐增性的情况下,为了提高其装填密度,其长径比应为2.5∶1-5∶1。The combustion model of multilayer tubular propellant was established to simulate and improve its interior ballistic property and burning behavior.And under the precondition of following the geometric combustion law,the equations describing Γ-Ψ relation of multilayer tubular propellants were derived by using their shape functions.The influences of ratio of the thickness of the slow layer to initial thickness,the burning rate ratio of the fast layer to slow layer,and the ratio of the thickness of propellant to the length of propellant on combustion property of multilayer tubular propellants were discussed through Γ-Ψ curves.The results show that：（1）the thickness of the slow layer to initial thickness of multilayer tubular propellants can′t be too big,and it is better in 0.3-0.6;（2）when the burning rate ratio of the fast layer to slow layer of multilayer tubular propellants is bigger,its combustion progressive property is better;（3）when good progressive combustion property is ensured,the length-to-diameter ratio should value in 2.5∶1-5∶1 to improve its loading density.

关 键 词：应用化学 多层管状发射药 燃烧性能 数值计算 

分 类 号：TJ55[兵器科学与技术—军事化学与烟火技术] TQ562[化学工程—炸药化工]