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

作　　者：吴洋 林东 孙浩然 吴成云 屈元元[2] 李旋 胡海涛[3] 陈迎春[2] WU Yang;LIN Dong;SUN Haoran;WU ChengyunQU Yuanyuan;LI Xuan;HU Haitao;CHEN Yingchun(The Postgraduate Education of Chinese Aeronautical Establishment,Beijing 100012,China;COMAC Shanghai Aircraft Design and Research Institute,Shanghai 201210,China;School of Mechanical Engineering,Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[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

出　　处：《上海交通大学学报》2024年第8期1264-1270,共7页Journal of Shanghai Jiaotong University

基　　金：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)。

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.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.

关 键 词：灭火袋 飞行 灭火飞机 落地分布 

分 类 号：TP202.2[自动化与计算机技术—检测技术与自动化装置]