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首页> 外文期刊>Aerospace science and technology >Investigation of flame establishment and stabilization mechanism in a kerosene fueled supersonic combustor equipped with a thin strut
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Investigation of flame establishment and stabilization mechanism in a kerosene fueled supersonic combustor equipped with a thin strut

机译：装有细支柱的煤油燃料超音速燃烧室中火焰建立和稳定机理的研究

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摘要

The flame establishment and propagation processes in a supersonic combustor fueled by liquid kerosene at Mach 6 condition were observed by high speed photography. In this paper, a thin strut acted as the flame holder equipped in the center of the combustor. In the experiment condition, the Mach number in the inlet of the combustor is 2.8, with the stagnation state T-t = 1680 K, P-t = 1.87 MPa. The combustion establishment process and the flame characteristics in the supersonic combustor were well captured and reproduced by the high-speed camera, with the camera parameter of 5000 frames per second. Experimental results show that initial flame appears around the plasma jet torch in the recirculation zone at the tailing edge of the strut, and grows to form a steady flame in the center of main inflow. The attribute of the flame is partially premixed flame in the experimental conditions, and the flame could be divided into three main parts in accordance with the flame characteristics. By the analysis of the high speed images, different flame propagation patterns in the flame establishment processes are found in different equivalence ratios, the mechanism of which is explained in this paper. (C) 2017 Elsevier Masson SAS. All rights reserved.
机译：通过高速摄影观察了马赫数为6的液态煤油为燃料的超音速燃烧室中火焰的建立和传播过程。在本文中，细细的支柱充当了燃烧室中央配备的火焰保持器。在实验条件下，燃烧器入口处的马赫数为2.8，停滞状态T-t = 1680 K，P-t = 1.87 MPa。超音速燃烧室中的燃烧建立过程和火焰特性可以通过高速相机以每秒5000帧的相机参数很好地捕获和再现。实验结果表明，最初的火焰出现在等离子喷枪周围，位于支杆尾部的再循环区域，并在主进气口的中心逐渐形成稳定的火焰。在实验条件下，火焰的属性是部分预混火焰，根据火焰特性，火焰可分为三个主要部分。通过对高速图像的分析，发现了在火焰建立过程中不同当量比的不同火焰传播方式，并对其机理进行了解释。 （C）2017 Elsevier Masson SAS。版权所有。

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  • 来源
    《Aerospace science and technology》 |2017年第11期|152-160|共9页
  • 作者

    Zhang Junlong; Chang Juntao; Ma Jicheng; Zhang Chenlin; Bao Wen;

  • 作者单位

    Harbin Inst Technol, Sch Energy Sci & Engn, Harbin 150001, Heilongjiang, Peoples R China;

    Harbin Inst Technol, Acad Fundamental & Interdisciplinary Sci, Harbin 150001, Heilongjiang, Peoples R China;

    Harbin Inst Technol, Sch Energy Sci & Engn, Harbin 150001, Heilongjiang, Peoples R China;

    Harbin Inst Technol, Sch Energy Sci & Engn, Harbin 150001, Heilongjiang, Peoples R China;

    Harbin Inst Technol, Sch Energy Sci & Engn, Harbin 150001, Heilongjiang, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Flame propagation; Flame stabilization; Supersonic combustor; Strut flame holder;

    机译：火焰传播;火焰稳定;超音速燃烧器;支撑火焰架;

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