一种高精度水下武器发射内弹道计算方法

杨春; 李开福; 陈炜彬; 李录甜; 李银龙

doi:10.11993/j.issn.2096-3920.2023-0123

一种高精度水下武器发射内弹道计算方法

doi: 10.11993/j.issn.2096-3920.2023-0123

1.
中国船舶集团有限公司第七〇五研究所昆明分部, 昆明, 650101
2.
昆明欧迈科技有限公司, 昆明, 650106

详细信息

作者简介:
杨春：杨　春(1996-), 男, 硕士,工程师,主要研究方向为发射装置技术

中图分类号: TJ63; U674
计量
- 文章访问数: 76
- HTML全文浏览量: 27
- PDF下载量: 0
- 被引次数: 0
出版历程
- 收稿日期: 2023-10-12
- 修回日期: 2024-06-02
- 录用日期: 2024-06-17
- 网络出版日期: 2024-08-13

A Calculation Method of High Precision for Underwater Weapon Launch Trajectory

1.
Kunming Branch of the 705 Research Institute, China State Shipbuilding Corporation Limited, Kunming 650101, China
2.
Kunming Optics-Mechanics-Electricity Technology Co., Ltd., Kunming 650106, China

摘要

摘要: 通过高精度理论推导和CFD滑移技术的耦合, 研究一种针对水下气动发射系统的高精度内弹道计算方法, 并通过试验进行验证。该方法对发射过程中的高压气体域运用四阶Runge-Kutta法进行求解, 水域部分采用滑移网格进行单自由度武器发射仿真, 并建立气体理论计算和流体仿真计算的耦合关系, 从而实现高精度的内弹道计算方法。通过理论计算和流体仿真的耦合, 可弥补单一理论计算误差偏大和单一流体仿真的高成本, 该耦合计算方法具有高精度、低成本的优势。对比试验数据, 通过该方法得到的武器出管速度平均误差为5.6%, 发射气瓶截止压力平均误差为4.0%。
- CFD /
- 内弹道计算方法 /
- 气动发射系统
Abstract: By combining theoretical calculation and CFD method, a high precision internal ballistic calculation method for the underwater aerodynamic imbalance weapon launch equipment is studied, and the calculation is verified by the experiment. In this method, the theoretical calculation of high order precision for the air part of weapon launch equipment is calculated, and CFD is used to simulate the water. The motion of piston is calculated according to the air pressure and water pressure. By targeting the calculation method, the high error of the overall use of the theoretical calculation is avoided, also with the cost of CFD, and the advantage of high accuracy and low cost is obtained. Compared with the experimental data, the speed error of the weapon is 5.6%, and the pressure error of the posterior cavity is 4.0%.
- CFD /
- internal ballistic calculation method /
- Pneumatic launch system

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图 1 气动不平衡式发射装置原理图

Figure 1. Principle diagram of pneumatic unbalanced launch device

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图 2 气动不平衡式发射装置模型

Figure 2. Model of pneumatic unbalanced launch device

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图 3 模型网格划分

Figure 3. Model grid division

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图 4 武器非结构网格加密

Figure 4. Unstructured mesh refinement of weapons

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图 5 网格剖视图

Figure 5. Sectional view of mesh

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图 6 发射活塞运动计算流程

Figure 6. Calculation process for launching piston motion

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图 7 CFD计算与理论计算耦合过程

Figure 7. Coupling process of CFD and theoretical calculation

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图 8 气瓶压力及质量流量变化曲线

Figure 8. The variation curve of gas cylinder pressure and mass flow rate

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图 9 气瓶压力及质量流量变化曲线

Figure 9. The variation curve of gas cylinder pressure and mass flow rate

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图 10 后腔气压变化曲线

Figure 10. The variation curve of rear chamber air pressure

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图 11 网格无关性验证

Figure 11. Grid independence verification

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图 12 发射过程不同时刻速度云图

Figure 12. The velocity contour of weapon for different moments

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图 13 不同深度下武器速度

Figure 13. The velocity of weapon in different deeps

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表 1 计算结果与试验对比

Table 1. Comparison between calculation results and experiments

发射深度/m	发射指标	理论-流体耦合计算值	试验值	误差
50	截止气压/MPa	7.15	6.8	5.1%
50	武器速度/(m/s)	9.65	10.0	3.5%
75	截止气压/MPa	6.83	6.7	1.9%
75	武器速度/(m/s)	8.78	8.3	5.8%
100	截止气压/MPa	6.56	6.2	5.8%
100	武器速度/(m/s)	8.96	8.5	5.4%
125	截止气压/MPa	6.70	6.5	3.1%
125	武器速度/(m/s)	9.04	8.6	3.5%
150	截止气压/MPa	6.66	6.4	4.1%
150	武器速度/(m/s)	10.23	9.7	5.5%

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参考文献(7)

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