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本文用高速气流沿半有界平板的湍流做为火炮发射过程中火药燃气流对炮膛的对流換热模型,导出连发射击过程中膛壁温度分布的数学模型。对任何火炮,只要知道其压力曲线和速度曲线,就可求得连发射击过程中膛壁温度分布。为改善武器的使用条件、身管强度设计及发射过程中热損失的分析提供理论根据。文中所用換热模型和数学模型已由53式7.62mm步枪的单发射击实测結果证实是可信的。
In this paper, the turbulent flow along the semi-bounded slab is used as the convective heat transfer model of the propellant gas stream to the borehole during the firing of the gun, and the mathematical model of the temperature distribution in the borehole wall during the firing process is derived. For any artillery, as long as you know the pressure curve and velocity curve, you can get the wall temperature distribution during the shooting process. To improve the conditions of use of weapons, body-strength design and launch heat loss analysis provides a theoretical basis. The heat transfer model and mathematical model used in this paper have been verified by the single-shot shooting results of 53-type 7.62mm rifles.