嵌银丝端燃装药耦合传热的内弹道数值分析

发布时间：2018-05-18 20:24

本文选题：嵌金属丝装药 + 二次开发　；参考：《固体火箭技术》2016年02期

【摘要】：针对内埋金属丝端燃装药燃烧过程中出现压强峰值的问题,耦合金属丝区域的传热过程,建立了内埋金属丝端燃装药燃速计算模型。通过对有限元软件,进行二次开发实现了内埋金属丝装药传热及燃面退移过程的模拟。结果显示,沿金属丝被加热推进剂的温度、燃速、增速比受燃烧室压强影响较大。在此基础上,进行了嵌单根银丝端燃装药内弹道仿真,得到了压强,燃面面积,沿金属丝燃速随时间变化规律。结果表明,计算模型可有效模拟内埋金属丝端燃装药燃烧过程,与实验数据吻合较好,从理论上解释了燃烧过程中出现压强峰值的实验现象。
[Abstract]:In order to solve the problem of peak pressure in the combustion process of buried wire end-charge, a model for calculating the burning rate of buried metal wire end-charge is established by coupling the heat transfer process in the wire region. Through the second development of finite element software, the simulation of heat transfer and flaming retrograde process of buried wire charge is realized. The results show that the temperature, burning rate and growth rate of the propellant heated along the wire are greatly affected by the pressure of the combustion chamber. On the basis of this, the interior ballistic simulation of the end burning charge with a single silver wire is carried out, and the pressure, the area of the burning surface and the change of burning rate along the metal wire with time are obtained. The results show that the calculation model can effectively simulate the combustion process of buried wire end-charge, which is in good agreement with the experimental data. The experimental phenomenon of peak pressure in the combustion process is explained theoretically.
【作者单位】：中国空空导弹研究院;
【基金】：国家自然科学基金(11402283)
【分类号】：V435

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