Laser-induced ignition modeling of HMX
Laser-induced ignition modeling of HMX
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DOI：
10.1016/j.combustflame.2014.08.004
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发表时间：
2015-02
影响因子：
4.4
通讯作者：
K. Meredith;M. Gross;M. Beckstead
中科院分区：
文献类型：
--
作者：
K. Meredith;M. Gross;M. Beckstead
利用详细的数值模型研究了HMX的激光点火响应。该模型是一维的、全瞬变的，求解凝聚相和气相的守恒方程。凝聚相表示包括辐射吸收、固相转变、熔融、蒸发和分布式半整体分解动力学。气相利用一个详细的动力学机制来预测物种的形成和破坏。点火发生在气相中，火焰向HMX表面传播，这就是众所周知的“回跳”效应。然后，该模型转变为稳态燃烧。进行了计算，其中固体HMX以50至1600微瓦/厘米2的热通量照射。将计算结果与激光点火HMX的实验数据进行了比较。与这些数据和其他稳态数据(燃速、表面温度、熔体厚度)的良好一致性为所开发的模型提供了必要的验证。
The laser-induced ignition response of HMX has been investigated using a detailed numerical model. The model is one-dimensional, fully transient, and solves the conservation equations for both the condensed and gas phases. The condensed phase representation includes radiation absorption, solid-phase transitions, melting, evaporation, and distributed semi-global decomposition kinetics. The gas phase utilizes a detailed kinetic mechanism to predict species formation and destruction. Ignition occurs in the gas phase and the flame propagates back toward the surface of the HMX in what is known as the ‘snap-back’ effect. The model then transitions to steady-state combustion. Calculations were performed in which the solid HMX is irradiated with heat fluxes ranging from 50 to 1600 W/cm2. Results are compared to empirical data for the laser-induced ignition of HMX. Good agreement with these data and other steady-state data (burning rate, surface temperature, melt thickness) provide the necessary validation of the developed model.