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  • 范育新 ( 教授 )

    的个人主页 http://faculty.nuaa.edu.cn/fyx/zh_CN/index.htm

  •   教授
  • 招生学科专业:
    动力工程及工程热物理 -- 【招收博士、硕士研究生】 -- 能源与动力学院
    航空宇航科学与技术 -- 【招收博士、硕士研究生】 -- 能源与动力学院
    能源动力 -- 【招收博士、硕士研究生】 -- 能源与动力学院
论文成果 当前位置: 中文主页 >> 科学研究 >> 论文成果
Experimental and numerical study on thermodynamic characteristics in a Z-shaped evaporating pilot-flameholder

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所属单位:能源与动力学院
发表刊物:Acta Astronaut
摘要:Reliable ignition and flame stability are crucial, particularly for the increasing expansion of flight envelopes. Herein, a novel Z-shaped evaporating pilot-flameholder is put forward to overcome critical challenges; further, the flameholder's ignition, blowout, and fully-developed flame characteristics under the operating conditions of turbine-based combined cycle combustors are experimentally investigated with the numerical flow field. The dynamic ignition process and the equivalence ratio of flame are acquired using a high-speed color camera and processed using an image-processing algorithm. The experimental results confirm the high ignition and blowout performance of the Z-shaped evaporating flameholder resulting from the superiority of its evaporating atomizer and Z-shaped structure. The ignition process of the Z-shaped flameholder simultaneously generates the diffusion and premixed flame types. The ignition performance of Z-shaped flameholder is significantly affected by the premixed degree of the pilot flame, which is a comprehensive index of the fuel atomization, evaporation, and turbulent mixing. The reflux rate and the premixed degree after ignition are little affected by the operating conditions, and the blowout performance is mainly influenced by the flow residence time and temperature. Further, the local equivalence ratio of the flame is acquired by calibrating the green/blue and equivalence ratios. Changing the equivalence ratio alters the double-reaction-zone feature in the Z-shaped evaporating flameholder. Under low fuel-lean conditions, flame stability is mainly contributed by the secondary reaction zone. © 2019 IAA
ISSN号:0094-5765
是否译文:否
发表时间:2019-09-01
第一作者:范育新
通讯作者:,,范育新,范育新,范育新,范育新,范育新,范育新,范育新,范育新,范育新,范育新,范育新
其他作者:Miao, Junjie,Liu, Tianchi,Wu, Weiqiu