双级波瓣引射混合器的引射性能  

Pumping performance for double-stage lobe mixer/ejector

作　　者：潘丞雄[1] 张靖周[1,2] 单勇[1] 

机构地区：[1]南京航空航天大学能源与动力学院江苏省航空动力系统重点实验室,南京210016 [2]先进航空发动机协同创新中心,北京100191

出　　处：《航空动力学报》2014年第9期2174-2180,共7页Journal of Aerospace Power

基　　金：江苏省普通高校研究生科研创新计划(CXZZ11_0222)

摘　　要：采用实验和数值方法对双级波瓣引射混合器的引射性能进行研究,重点研究混合管在两种不同进口方式下的引射混合器气动特征差异,并初步分析混合管面积比和长径比对双级波瓣引射混合器引射性能的影响.结果表明:混合管进口方式对引射能力有非常重要的影响,在研究的结构参数条件下,对于受限式进口,单级波瓣引射混合器的引射能力要强于双级波瓣引射混合器约10%;而对于敞开式进口,其引射能力要优于受限式进口最大约35%,此时双级波瓣引射混合器的引射能力要略好于单级波瓣引射混合器.在较大的混合管面积比或较小的长径比下,敞开式进口下双级波瓣引射混合器较受限式进口表现尤为优越.The pumping performances of double-stage lobe mixer/ejector were experimentally and numerically investigated. The aerodynamic characteristics difference of mixer/ ejector between two inlet modes of mixing duct was illustrated and the effects of mixing duct area ratio and length-diameter ratio on the pumping performance of double-stage lobe mixer/ ejector were preliminarily analyzed. The results show that the inlet mode of mixing duct has strong influence on pumping capacity. Under the present configuration parameters, the pumping capacity of single-stage lobe mixer/ejector is 10% superior to that of double-stage lobe mixer/ejector in the case of confined inlet. While in the case of open inlet, the pumping capacity is 35% superior to that of confined inlet at most. The pumping capacity of double-stage lobe mixer/ejector is stronger than that of single-stage lobe mixer/ejector. Especially for the mixing duct with bigger area ratio or less length-diameter ratio, the pumping performances of double-stage lobe mixer/ejector in the case of open inlet is superior to that of confined inlet.

关 键 词：引射混合器 双级波瓣喷管 引射性能 实验测试 进口方式 

分 类 号：V231[航空宇航科学与技术—航空宇航推进理论与工程]