某火炮身管温度仿真计算及其影响因素分析  

Temperature Simulation Calculation and Analysis of Influential Factors of a Certain Gun Barrel

作　　者：朱文芳[1] 王育维[1] 郭映华[1] 董彦诚[1] 李瑞静[1] 

机构地区：[1]西北机电工程研究所,陕西咸阳712099

出　　处：《火炮发射与控制学报》2016年第4期58-62,共5页Journal of Gun Launch & Control

摘　　要：火炮射击过程中高温燃气周期性冲刷身管内膛导致内膛壁温升高,从而使以含能材料为主配方的全可燃装药在膛内滞留期间面临更多的热安全性问题。利用双一维两相流内弹道模型与一维轴对称热传导模型,描述了某火炮连续发射过程中的身管传热规律,并通过计算结果与试验测试结果对比,验证了模型的准确性。在此基础上,对持续射击20发的身管温度场进行了仿真,得到了每发射击完成后身管内、外壁温度分布规律,分析了不同环境温度、射击工况及身管厚度对身管温度变化规律的影响。结果表明,射击工况对药室内膛温度径向分布规律影响较大,环境温度、身管厚度对其的影响很小;环境温度、射击工况对药室内壁最高温度达到火炮报警温度的射击发数影响较大,身管厚度对其的影响很小。计算结果为装药射击热安全性、身管热烧蚀及寿命研究提供参考。During the process of gun firing,the temperature in bore would rise because of periodical scouring from high temperature gas,so there were more thermal security problems when modular charge with energy-filled material as the main ingredients was loaded into chamber. A description was made of the heat transfer law of gun barrel for a howitzer during continuous firing by using one-dimensional twophase flow interior ballistic model and one-dimensional axial symmetry heat transfer model. Through a comparison of calculated results and test results,the accuracy of the model was verified. On the basis of this model,temperature field of continuous firing 20 rounds was simulated,with temperature distribution law at different positions of inner and outer gun barrel achieved and the effect of different environment temperatures,firing conditions and thickness of barrel on temperature variation law of barrel analyzed. The results show that firing conditions had a greater influence on temperature radial distribution law in chamber,but environment temperature and thickness of barrel had little influence on it.Environment temperature and firing conditions had a greater influence on firing round that the highest temperature in chamber rise to alarm temperature,but thickness of barrel had little influence on it.Calculation results of this text provided reference for the analysis of charge firing thermal safety,thermal ablation and life of barrel.

关 键 词：全可燃装药 传热 射击热安全性 连续射击 

分 类 号：TJ012.1[兵器科学与技术—兵器发射理论与技术]