飞机灭火管路三氟溴甲烷流动仿真

摘 要：使用Amesim软件对某型飞机灭火系统管路建立了仿真模型，研究了灭火剂充装压力、灭火剂温度、管路粗糙度、灭火管路喷口直径、管路支管直径等参数的影响。发现在5.34 kg灭火剂充装量下，4，5，6 MPa充装压力下的灭火剂喷出质量曲线相近；灭火剂温度越低，喷射速度越慢，-50 ℃灭火剂的喷射时间约为-10 ℃的2.5倍；粗糙度对灭火剂喷射量也有明显影响，粗糙度越低,喷出量越快，但0.13 mm和0.20 mm粗糙度下的灭火剂喷出质量曲线相近；16，17，18 mm喷口直径对系统的整体灭火剂喷出质量影响很小，但喷口之间的流量分配会受到喷口直径变化的影响；当连接3个喷口的长支管和连接2个喷口的短支管直径组合为（16，14 mm）、（14，12 mm）时，2条支管的灭火剂喷出量之比接近1。

Simulation of Halon 1301 flow in aircraft fire extinguishing pipes

Abstract: In order to systematically grasp the research progress in the field of non-coal dust explosion suppression, China Knowledge Network (CNKI) was used as the data source to analyze the digital characteristics of 108 documents in the field of non-coal dust explosion suppression using the bibliometric method, and the VOSviewer software was used to draw the knowledge map to explore the research evolution, hot spots and frontiers. The results show that: The number of research papers in the field of non-coal dust explosion suppression shows a trend of steady growth, and the research process can be divided into three stages; The selected 108 papers mainly focus on safety science and disaster prevention, mining engineering, organic chemical engineering and other disciplines; The research focuses mainly on combustible dust explosion, detonation suppressor, detonation suppression system, detonation characteristics and suppression mechanism, etc. It is the trend that the research in this field changes from the study of macroscopic measures to the study of microcosmic mechanism.