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Turbulent flame-shock interaction inducing end-gas autoignition in a confined space

机译:湍流的火焰冲击相互作用在密闭空间中诱导终端气体自燃

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摘要

To understand the detonation phenomenon in a confined space, especially in a downsized spark ignited engine and in explosion disasters, an experiment on the turbulent flame-shock interaction inducing end gas autoignition was carried out in an improved constant volume combustion chamber equipped with a perforated plate. In the present work, the entire detonation formation process, including the turbulent flame acceleration, shock wave formation and enhancement process, motion and reflection of the shock wave, and detonation formation and propagation, was observed. A very strong pressure oscillation with a peak value of 5.7 MPa and a maximum amplitude of pressure oscillation of 3.8 MPa are achieved for the end-gas autoignition with detonation development. (C) 2019 The Combustion Institute. Published by Elsevier Inc. All rights reserved.
机译:要了解狭窄空间中的爆震现象,特别是在缩小的火花点火发动机和爆炸灾害中,在配备有多孔板的改进的恒定体积燃烧室中进行湍流火焰冲击相互作用诱导端气体自燃的实验。在本作工作中,观察到整个爆轰形成过程,包括湍流火焰加速,冲击波形成和增强过程,运动和反射的冲击波,以及爆炸形成和传播。具有5.7MPa的峰值和最大压力振荡幅度的非常强大的压力振荡对于具有爆炸发育的终端气体自身来实现3.8MPa的最大压力振荡。 (c)2019燃烧研究所。由elsevier Inc.出版的所有权利保留。

著录项

  • 来源
    《Combustion and Flame》 |2019年第6期|137-141|共5页
  • 作者单位

    Tianjin Univ State Key Lab Engines 92 Weijin Rd Tianjin 300072 Peoples R China;

    Tianjin Univ State Key Lab Engines 92 Weijin Rd Tianjin 300072 Peoples R China;

    Tianjin Univ State Key Lab Engines 92 Weijin Rd Tianjin 300072 Peoples R China;

    Tianjin Univ State Key Lab Engines 92 Weijin Rd Tianjin 300072 Peoples R China;

    Tianjin Univ State Key Lab Engines 92 Weijin Rd Tianjin 300072 Peoples R China;

    Tianjin Univ State Key Lab Engines 92 Weijin Rd Tianjin 300072 Peoples R China;

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

    Detonation; Shock wave; Flame-shock interaction; Pressure oscillation; End-gas autoignition;

    机译:爆炸;冲击波;火焰冲击相互作用;压力振荡;终端气体自燃;

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