船用燃气轮机红外抑制器的实验研究  

Experimental Study on the Infrared Signature Suppression Device of a Marine Gas Turbine Exhaust System

作　　者：谈立成[1] 张会生[1] 陆振华[1] 苏明[1] 

机构地区：[1]上海交通大学动力机械与工程教育部重点实验室,上海200240

出　　处：《上海交通大学学报》2011年第6期847-850,共4页Journal of Shanghai Jiaotong University

摘　　要：采用可调节高度的支架,针对船用燃气轮机红外抑制器的喷管与混合管间距对抑制器引射性能的影响进行了热态实验.同时,实验了不同收缩比的喷管对其引射性能的影响,测量了抑制器出口截面直径方向上的压力和温度分布以及主流入口静压.结果表明:热态情况下喷管和混合管间距与混合管直径的比值a/D=0.875左右时,抑制器出口中心区排气温度最低.减小波瓣喷管出口与入口截面积比值(收缩比)Aout/Ain,有利于降低抑制器排气温度,但也将增大抑制器的阻力.An experiment was carried out to study the ejector.The impact of the distance of the nozzle and the mixer was tested.Different nozzles were also used.The temperature field on the outlet baseline of the ejector was recorded as well as the static pressure of the main stream.The results indicate that the exhaust temperature is reduced most effectively when the distance ratio a/D reaches 0.875.In addition,decreasing the outlet area of nozzle helps to lower the exhaust temperature but will also increase the resistance of the infrared suppressor.

关 键 词：红外抑制器 波瓣喷管 混合管 扩压器 引射 

分 类 号：TK05[动力工程及工程热物理]