机载批量灭火袋高空抛洒落地分布特性的模拟与实验验证

doi:10.16183/j.cnki.jsjtu.2023.014

上海交通大学学报 ›› 2024, Vol. 58 ›› Issue (8): 1264-1270.doi: 10.16183/j.cnki.jsjtu.2023.014

机载批量灭火袋高空抛洒落地分布特性的模拟与实验验证

吴洋¹^,², 林东³, 孙浩然², 吴成云², 屈元元², 李旋³, 胡海涛³(), 陈迎春²

1.中国航空研究院研究生院,北京 100012
2.中国商飞上海飞机设计研究院,上海 201210
3.上海交通大学机械与动力工程学院,上海 200240

收稿日期:2023-01-11 修回日期:2023-04-03 接受日期:2023-04-23 出版日期:2024-08-28 发布日期:2024-08-27
通讯作者: 胡海涛,副教授,博士生导师,电话(Tel.):021-34207062;E-mail:huhaitao2001@sjtu.edu.cn.
作者简介:吴洋(1982-),研究员,从事飞行器设计研究.
基金资助:
国家自然科学基金(51976115);上海市启明星项目扬帆专项(22YF1459700);上海市自然科学基金(23ZR1478900)

Simulation and Experimental Validation of Landing Distribution Characteristics of Aircraft Mass Fire Extinguishing Bags Sprayed at High Altitude

WU Yang¹^,², LIN Dong³, SUN Haoran², WU Chengyun², QU Yuanyuan², LI Xuan³, HU Haitao³(), CHEN Yingchun²

1. The Postgraduate Education of Chinese Aeronautical Establishment, Beijing 100012, China
2. COMAC Shanghai Aircraft Design and Research Institute, Shanghai 201210, China
3. School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China

Received:2023-01-11 Revised:2023-04-03 Accepted:2023-04-23 Online:2024-08-28 Published:2024-08-27

摘要/Abstract

摘要：

为了对灭火飞机高空抛洒系统进行优化设计,必须建立反映飞行过程机载批量灭火袋高空抛洒落地机理的模型.基于离散元方法和计算流体力学方法,建立了机载批量灭火袋高空抛洒落地特性机理模型,获得不同飞行速度和高度下的灭火袋抛洒特性及落地分布,通过实验对模型进行了验证.抛洒落地分布的模拟结果与实验数据偏差在20.0%以内.研究成果为飞机高空灭火系统研制提供理论模型,以显著提升灭火飞机喷洒系统的灭火效果.

关键词: 灭火袋, 飞行, 灭火飞机, 落地分布

Abstract:

In order to optimize the design of high-altitude sprinkling system of fire-fighting aircraft, it is necessary to establish a model reflecting the high-altitude spraying and distribution mechanism of mass fire extinguishing bags during the flight. Based on the discrete element method and the computational fluid dynamics method, a high-altitude spraying and distributing model of aircraft mass fire extinguishing bags is established, and the spraying characteristics and landing area distribution at different flight speeds and altitudes are obtained. The model is verified by experiments. The deviations between simulated landing distribution and experimental data are less than 20.0%. The research results provide a theoretical model for the development of aircraft high altitude fire extinguishing system, so as to significantly improve the fire extinguishing performance of aircraft spraying system.

Key words: fire extinguishing bag, flight, fire-fighting aircraft, landing distribution characteristics

中图分类号:

TP202+.2

吴洋, 林东, 孙浩然, 吴成云, 屈元元, 李旋, 胡海涛, 陈迎春. 机载批量灭火袋高空抛洒落地分布特性的模拟与实验验证[J]. 上海交通大学学报, 2024, 58(8): 1264-1270.

WU Yang, LIN Dong, SUN Haoran, WU Chengyun, QU Yuanyuan, LI Xuan, HU Haitao, CHEN Yingchun. Simulation and Experimental Validation of Landing Distribution Characteristics of Aircraft Mass Fire Extinguishing Bags Sprayed at High Altitude[J]. Journal of Shanghai Jiao Tong University, 2024, 58(8): 1264-1270.

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工况	飞行高度/m	飞行速度/(km·h^-1)	风速/(m·s^-1)	风向/(°)
1	80	100	3.6	160
2	80	120	4.1	147
3	120	120	5.0	200

工况	实验宽度/m	实验长度/m	模拟宽度/m	模拟长度/m	宽度偏差/%	长度偏差/%
1	20.0	120.0	24.0	111.0	20.0	7.5
2	20.0	140.0	23.0	146.0	15.0	4.3
3	30.0	150.0	29.6	157.0	1.3	4.7

机载批量灭火袋高空抛洒落地分布特性的模拟与实验验证

Simulation and Experimental Validation of Landing Distribution Characteristics of Aircraft Mass Fire Extinguishing Bags Sprayed at High Altitude

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