蒸发槽火焰稳定器低压点火过程试验研究  

Experimental Investigation on the Ignition Process of the Evaporative Flame Holder Under the Subatmospheric Pressure

作　　者：黄亚坤 朱志祥 朱焕宇 何小民[2] HUANG Yakun;ZHU Zhixiang;ZHU Huanyu;HE Xiaomin(National Key Laboratory of Transient Physics,Nanjing University of Science and Technology,Nanjing 210094,China;College of Energy and Power Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China;Low-carbon Aerospace Power Engineering Research Center of Ministry of Education,Nanjing 210016,China)

机构地区：[1]南京理工大学瞬态物理国家重点实验室,南京210094 [2]南京航空航天大学能源与动力学院,南京210016 [3]低碳航空动力教育部工程研究中心,南京210016

出　　处：《工程热物理学报》2024年第10期3196-3208,共13页Journal of Engineering Thermophysics

基　　金：江苏省卓越博士后计划(No.316958);中国博士后科学基金面上项目(No.2023M741697);江苏省青年基金(No.BK20230932);低碳航空动力教育部工程研究中心(No.CEPE2020018);中央高校基本科研业务费专项资金资助(No.30923010306)。

摘　　要：试验研究了低压环境下不同进口压力、温度和马赫数对蒸发槽火焰稳定器点火火焰演化特征和点火延迟时间的影响。研究发现,进口温度的升高会增大火焰投影面面积和火焰增长速率、减小点火延迟时间,且点火延迟时间的减小趋势随着温度继续升高而减弱;进口压力的增大同样使得火焰投影面积增大、点火延迟时间逐渐减小;随着马赫数的逐渐增大,火焰增长速率和火焰投影面面积先增大后减小,点火延迟时间先减小后增大。The effects of inlet pressure,temperature,and Mach number on ignition flame evolution characteristics and ignition delay time of evaporative flameholder under subatmospheric pressure were investigated experimentally.The results indicated that increasing inlet temperature would increase the flame projected area and flame growth rate and reduce the ignition delay time.The decreasing trend of ignition delay time will weaken with the temperature increase.Besides,the increased inlet pressure leads to an increased flame projected area and decreased ignition delay time.Then,a first increasing and then reducing trend of flame growth rate and flame projected area was achieved by the increased Mach number.

关 键 词：火焰稳定器 低压 点火过程 火焰传播 点火延迟时间 

分 类 号：V231.2[航空宇航科学与技术—航空宇航推进理论与工程]