废旧弹药内部的炸药大多为三硝基甲苯(TNT),其处理回收是一个重点课题,TNT熔点较低,易转化为熔融态,可以基于传统的燃烧销毁的思路,将TNT先雾化再燃烧销毁,实现实验室的可控燃烧。基于FLUENT仿真软件,对熔融态TNT的雾化过程进行仿真计算,探究雷诺数的参数如速度和材料属性等对雾化的影响,研究发现:低雷诺数下射流速度沿轴线衰减较快,展向速度的高速区较长;高雷诺数下射流呈螺旋状,速度沿轴线衰减较慢,展向速度的高速区较短;材料属性对于雾化影响较小,但材料可分为规律相同但互相独立的两组。

The treatment of used ammunition is a key subject in the world, and the disposal of explosives inside used ammunition is essential. Most of the explosives are TNT. The melting point of TNT is low and it can easily be converted into a molten state.Based on the traditional idea of combustion destruction, TNT can be atomized and then burned and destroyed to achieve controlled combustion in the laboratory. Based on FLUENT simulation software, this paper simulates and calculates the atomization process of molten TNT, and explores the influence of Reynolds parameters such as speed and material properties on atomization. It is found that the low Reynolds number shooting speed decays faster along the axis and the high-speed zone of the extended speed is longer. The airflow of high Reynolds number is spiral, the speed along the axis attenuation is slower, the spread-speed zone of the high-speed zone is shorter. Material properties have less effect on atomization, but from the calculation results, materials can be divided into two groups with the same laws but independent of each other.