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对发射药热自燃现象进行了数值模拟研究。通过与在实验室中进行的小模型实验及在野外进行的大模型实验结果的比较，确定了发射药热自燃的反应模型；在此基础上，通过数值模拟研究了直径和壁面温度对发射药热自燃的影响规律。结果发现：实验段四周壁面温度越高、实验段直径越大，发射药越容易自燃；发射药Ｎｏ．１比发射药Ｎｏ．２更容易发生热自燃。还预测了在各种温度条件下，发射药Ｎｏ．１与发射药Ｎｏ．２可能发生热自燃的直径范围。
The spontaneous combustion phenomenon of propellant was simulated by numerical simulation. Through the comparison with the experimental results of small model experiments carried out in the laboratory and in the field, the reaction model of spontaneous combustion of propellants was determined. Based on this, the effects of the diameter and the wall temperature on the projectiles were investigated by numerical simulation. The influence law of spontaneous combustion. The results showed that: the higher the wall temperature around the experimental section, the larger the diameter of the experimental section, the more likely the propellant spontaneous combustion; 1 than the launch drug No. 2 is more prone to spontaneous combustion. It is also predicted that under various temperature conditions, the launch drug No. 1 and Propellant No. 2 Diameter range of thermal self-ignition may occur.