空气雾化喷嘴在横向流动中的喷雾特性研究  

Study on Characteristics of Airblast Injector and Fuel Spray Injection into the Cross Flow

作　　者：李丽远[1] 郭志辉[1] 李振祥[1] 任立磊[1] 张澍[1] 

机构地区：[1]北京航空航天大学能源与动力工程学院航空发动机气动热力国家级重点实验室,北京100191

出　　处：《燃气轮机技术》2013年第1期40-45,共6页Gas Turbine Technology

摘　　要：采用激光雾滴粒径分析仪(Malvern)测试不同方案结构的空气雾化喷嘴单元在横向流动中的喷雾特性,并测试了基础双环预混旋流结构和加装空气雾化喷嘴改进结构的喷雾特性。结果表明:空气雾化喷嘴在横向流动中的喷雾特性随工况条件改变而产生的变化趋势符合雾化的基本原理;基础结构和改进形式双环预混旋流结构的对比显示改进结构在各个工况下喷雾的液滴索太尔平均直径SMD明显减小,在出口附近液滴分布更加均匀。说明当主燃级采用空气雾化喷嘴时,可以明显的提高其雾化性能,有利于改善油气混合。An experiment was conducted to investigate the spray characteristics of different structure airblast atomizers injection into the cross flow, as well as the spray characteristics of original Twin Annular Premixing Swirler（TAPS） and improved TAPS with airblast at-omizers. Malvern was used in the test. As the results shows that variation tendency of spray characteristics accords to the atomization theories. Comparing with spray characteristics of original TAPS and improved TAPS with airblast atomizers, it shows that the latter has smaller SMD and better spray droplets distribution at every working condition obviously.

关 键 词：空气雾化 喷雾特性 横向流 双环预混旋流 

分 类 号：V235.11[航空宇航科学与技术—航空宇航推进理论与工程]