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文章编号： 1672-6987（2024）05-0119-08； DOI： 10.16351/j.1672-6987.2024.05.016
邹凯1， 林国问2， 郭春晓3， 张震东1， 乐伟康1， 姚琳3, 任杰1*
(1. 南京理工大学 机械工程学院，江苏 南京 210094；2. 中国航天科工集团四院四部，北京 100854；3. 南京模拟技术研究所，江苏 南京 210016)
摘要： 超临界二氧化碳相变发射是当前武器发射领域研究热点之一，为进一步扩展超临界气体炮发射的研究，基于高压发射技术和气体炮的基本原理，确立超临界相变发射装置的总体方案，对超临界态二氧化碳与火药燃气的换热过程进行拟合。以弹体发射速度为目标，根据热力学方程与内弹道方程，得到初始压力变化规律，建立了超临界相变气体炮发射模型。基于Fluent对超临界相变发射流场变化进行了研究，分析了相变发射装置内气流速度变化，得到了初始压力和弹体质量对弹体出口速度的影响规律以及弹体在不同运动时刻周边流体域的变化情况，总结了经验公式。与实验结果对比表明：设计的超临界相变发射方案符合弹体预定的发射指标，流体仿真模型可靠。
关键词： 超临界二氧化碳； 发射技术； 内弹道； 气体炮； 流体力学； 相变
中图分类号： TQ 207+.2文献标志码： A
引用格式： 邹凯，林国问，郭春晓,等.超临界气体炮发射装置内弹道建模与数值分析［J］. 青岛科技大学学报(自然科学版), 2024, 45（5）： 119-126.
ZOU Kai, LIN Guowen, GUO Chunxiao, et al.Internal ballistic modeling and numerical analysis of supercritical gas gun launch device［J］. Journal of Qingdao University of Science and Technology（Natural Science Edition), 2024， 45（5）： 119-126.
Internal Ballistic Modeling and Numerical Analysis of
Supercritical Gas Gun Launch Device
ZOU Kai1, LIN Guowen 2, GUO Chunxiao3, ZHANG Zhendong1, LE Weikang 1, YAO Lin3, REN Jie 1
(1. School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China;
2. The Fourth System Design Department, Fourth Academy, China Academy of Aerospace Science and Industry
Corporation, Beijing 100854, China; 3. Nanjing Simulation Technology Research Institute, Nanjing 210016, China)
Abstract: Supercritical carbon dioxide phase change launch is one of the current research hotspots in the field of weapon launch. In order to further expand the research on supercritical gas gun launch, this paper establishes the overall plan of the supercritical phase change launch device based on high-pressure launch technology and the basic principles of gas guns, and fits the heat exchange process between supercritical carbon dioxide and gunpowder gas. A supercritical phase change gas gun launch model was established based on the thermodynamic equation and internal ballistic equation, with the target of projectile launch speed, to obtain the initial pressure change law. Based on Fluent, the changes in the flow field of supercritical phase change launch were studied, and the changes in airflow velocity inside the phase change launch device were analyzed. The influence of initial pressure and projectile mass on the exit velocity of the projectile was obtained, as well as the changes in the surrounding fluid domain of the projectile at different motion times. Empirical formulas were summarized. The comparison with experimental results shows that the designed supercritical phase transition launch scheme meets the predetermined launch indicators of the projectile, and the fluid simulation model is reliable.
Key words: supercritical carbon dioxide; launching technology; internal trajectory; gas gun; fluid dynamics; phase transition
收稿日期： 2024-01-11
基金项目： 国家自然科学基金项目（11902160）.
作者简介： 邹凯(2000—),男,硕士研究生. *通信联系人.
