摘要
为进一步研究超燃冲压发动机接近实际工作状态时,不同支板结构对燃料/空气掺混效果的影响,本文在课题组前期工作的基础上,改进了部分试验系统,进行了热态试验环境下的丙酮平面激光诱导荧光(PLIF)测量和H2点火燃烧条件下的OH-PLIF测量,得到了多种工况条件下,多个横截面位置的丙酮PLIF和OH-PLIF荧光图像。结果表明:在热态试验环境下,采用4种支板时的丙酮PLIF信号比冷态试验结果整体上弱了许多,但采用EL1支板时,燃料/空气的掺混效果与冷态试验结果保持一致(仍为最优);在H2点火燃烧条件下,从OH的生成数量和扩散区域可以看出,EL1支板对燃烧效率的提升作用更好,这也从侧面证明了EL1支板在4种支板中效果最优。
In order to further study the influence of different strut’s structure on fuel/air mixing effect,when it was in the relatively real working condition of scramjet,parts of test system were improved based on the previous work of the research group.Acetone planar laser induced fluorescence(PLIF)measurement conditions were carried out in hot test environment,and OH-PLIF measurement conditions were carried out in H_(2)combustion environment.The acetone PLIF fluorescence images and the OH-PLIF fluorescence images which were in the multiple cross sections with various working conditions were obtained.The results showed that the acetone PLIF signals of the four kinds of struts in hot test environment were much weaker than cold test results.However,it was still EL1 strut which had best function on fuel/air mixing effect,and that was consistent with cold test results.Under the condition of H2 ignition combustion,the generated amount and diffusion area of OH reflected that EL1 strut had a better effect on improving the combustion efficiency,and it also reflected from the side that EL1 strut was the best of four kinds of struts.
作者
王林森
涂晓波
周全
车庆丰
王宇航
陈爽
WANG Linsen;TU Xiaobo;ZHOU Quan;CHE Qingfeng;WANG Yuhang;CHEN Shuang(Science and Technology on Scramjet Laboratory of Hypervelocity Aerodynamics Institute,China Aerodynamics Research and Development Center,Mianyang 621000,China;Facility Design and Instrumentation Institute,China Aerodynamics Research and Development Center,Mianyang 621000,China;Beijing Aerodynamics Science Research Center,Beijing 100120,China)
出处
《实验流体力学》
北大核心
2025年第1期87-94,共8页
Journal of Experiments in Fluid Mechanics
基金
国家重点研发计划项目(2020YFA0405700)
火灾与爆炸安全防护重庆市重点实验室开放基金项目(LQ21KFJJ05)
高超声速冲压发动机技术重点实验室开放基金项目(STS/MY-KFKT-2017-003)
航空发动机及燃气轮机重大专项基础研究项目(J2019-XXX-XXX-XXX)。
关键词
丙酮示踪
超燃冲压发动机
掺混效果
平面激光诱导荧光
流场结构
acetone tagging
scramjet
mixing effect
planar laser induced fluorescence(PLIF)
flow field structure
作者简介
王林森(1993-),男,四川巴中人,硕士研究生,助理研究员。研究方向:面向航空发动机/超燃冲压发动机的激光光谱诊断技术。E-mail:1729560285@qq.com;通信作者:陈爽,E-mail:chenshuang827@gmail.com.
