摘要
为了考察浮升力对再生冷却矩形通道内煤油流动换热的影响,通过施加过载来模拟浮升力效应,采用数值方法研究了RP-3航空煤油在矩形通道内的流动与换热特性,引入了二次流速度参数分析二次流的变化规律。结果表明:随着过载的增加,浮升力效应更加明显,通道内二次流速度增大;燃烧室上壁面和两侧壁面冷却通道最高壁温均减小4.5%以上,传热恶化现象得到明显改善,但下壁面冷却通道最高壁温略有提高。
In order to investigate the influence of buoyancy on the kerosene flow and heat transfer in the rectangular regenerative cooling channel,the effect of buoyancy was simulated by applying overload,and the flow and heat transfer characteristic of RP-3 aviation kerosene in rectangular channel were studied by numerical method.The secondary flow velocity parameter was introduced to analyze the changing rule of secondary flow.The results show that with the increase of overload,the effect of buoyancy is more obvious,and the secondary flow velocity in the channel increases;the maximum wall temperature of the cooling channel on the upper wall and the two side walls of the combustor is reduced by more than 4.5%,and the heat transfer deterioration is obviously improved,but the maximum wall temperature of the cooling channel on the lower wall is slightly increased.
作者
王壮壮
张登成
周章文
粟银
WANG Zhuangzhuang;ZHANG Dengcheng;ZHOU Zhangwen;SU Yin(Aeronautics Engineering College,Air Force Engineering University,Xi’an 710038,China;Department of Basic Sciences,Air Force Engineering University,Xi’an 710051,China)
出处
《弹箭与制导学报》
北大核心
2019年第6期130-133,137,共5页
Journal of Projectiles,Rockets,Missiles and Guidance
关键词
超临界压力
浮升力
矩形通道
RP-3煤油
过载
二次流
流动换热
supercritical pressure
buoyancy
rectangular channel
RP-3 kerosene
overload
secondary flow
flow and heat transfer
