飞机客舱火灾阴燃阶段CO扩散规律的数值模拟  

Numerical Simulation of Diffusion Regularity of CO in Fire Smoldering Phase in Aircraft Cabin

作　　者：林家泉[1] 王瑞婷[1] 皮骏[1] 马敏[1] 杨建忠[1] Lin Jiaquan Wang Ruiting Pi Jun Ma Min Yang Jianzhong(Institute of Electronic Information and Automation, Civil Aviation University of China, Tianjin 300300, Chin)

机构地区：[1]中国民航大学电子信息与自动化学院,天津300300

出　　处：《系统仿真学报》2017年第3期509-515,共7页Journal of System Simulation

基　　金：国家自然科学基金委中国民航局联合基金项目(U1433107)

摘　　要：为研究飞机客舱空调的送风速度对火灾阴燃阶段释放CO的影响以及不同送风速度下CO的扩散规律对人体的危害影响,建立了A320飞机客舱的仿真模型,基于流体动力学控制方程,模拟了不同送风速度下飞机客舱内的风速场和CO浓度场。分析了在不同方向上CO的扩散规律,得到了空调送风速度与客舱内CO浓度值及扩散范围之间的关系。计算了不同送风速度下人体呼吸位置的排污效率,得到送风速度与排污效率之间的关系,所得的数值模拟结果为飞机客舱火灾阴燃阶段CO扩散规律及毒性研究提供依据。In order to study the impact of the cabin air conditioning supply velocity on CO diffusing in the fire smoldering phase and the effect of the transportation of CO to human body, a simulation model of A320 aircraft cabin was established, and velocity field and CO concentration field under the different air supply velocity were simulated based on the fluid dynamics control equations. The relationship between the air conditioning supply velocity and the value of CO concentration as well as the diffusion area was obtained by the analysis of the transportation of CO in different directions. The drainage efficiency on human respiratory position under different air supply velocity was calculated, and the relationship of the drainage efficiency and air supply velocity was obtained. The results of numerical simulation provide a basis for CO diffusion regularity in aircraft cabin fire smoldering phase and the study of CO toxicity.

关 键 词：CFD A320飞机客舱 数值模拟 CO扩散 

分 类 号：V245.3[航空宇航科学与技术—飞行器设计]