摘要
舰载机发动机喷出的气体,在离开喷管后形成的具有高温和高压特性的高速射流,对舰艇周围环境和设备有较大影响。本文采用发动机喷流速度场模型,利用CFD软件对舰载机发动机喷管高温高压流动特性进行仿真分析,得到了超音速流动下中度欠膨胀和高度欠膨胀的特征和气体射流场随马赫数的增加所产生的变化特性。在此基础上,针对不同的偏流板倾角45°,60°,75°,90°,分析舰载机发动机喷流对偏流板的冲击流场特性,得到偏流板角度变化时流动特性和变化规律。
Ejective gas of the carrier based aircraft form high temperature and high pressure gas jet after leaving jet tube which is of the great influence of the jet on the surrounding environment and equipment. This paper used CFD soft to analyze the flow field of high temperature and high pressure gas jet by the latest ＂ fighter aircraft engine spray flow velocity field＂ model. The simulation results display the supersonic flow field characteristics of lateral jet with under expand heterogeneous and high expand heterogeneous under different Ma number. The flow field of engine jet impingement with four different drift plat angle of 45° ,60° ,75° ,90° were also presented.
出处
《舰船科学技术》
北大核心
2016年第1期145-149,共5页
Ship Science and Technology
关键词
舰载机
高温高压
喷管
偏流板
carrier based aircraft
high temperature and high pressure
engine jet
drift plate
