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Influence of viscous boundary layer on initiation zone structure of two-dimensional oblique detonation wave

机译：粘性边界层对二维斜爆波启动区结构的影响

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摘要

The influence of the viscous boundary layer on the oblique detonation wave structure has been simulated and analyzed by solving the two-dimensional Navier-Stokes equations containing the hydrogen/air elementary reaction model. It is found that the effect of the viscous boundary layer can be neglected in the smooth transition initiation structure, but not in the abrupt transition initiation structure. The interaction of the lateral shock wave and the viscous boundary layer results in the formation of a high-temperature recirculation zone near the wall of the initiation zone, a novel structure that does not appear in inviscid formulations. Within this structure, the chemical reaction is triggered to occur in advance, eventually leading to the equilibrium initiation position relocating upstream compared with the inviscid case. Nevertheless, the viscous boundary layer has a limited impact on the main flow region downstream of the oblique detonation. The shock wave structures and pressure distributions at various Mach numbers are obtained computationally and analyzed in detail. (C) 2020 Elsevier Masson SAS. All rights reserved.
机译：通过求解含有氢/空气基本反应模型的二维Navier-Stokes方程，模拟和分析了粘性边界层对倾斜爆震波结构的影响。发现粘性边界层的效果在平滑的过渡开始结构中可以忽略，但不在突然的转变起始结构中忽略。横向冲击波和粘性边界层的相互作用导致在起始区壁附近形成高温再循环区，这是一种不出现在缺陷制剂中的新型结构。在该结构中，触发化学反应预先发生，最终导致与托义案例相比重新定位上游的平衡起始位置。然而，粘性边界层对倾斜爆炸下游的主流量区域的影响有限。在计算上获得和分析各种马赫数的冲击波结构和压力分布。 （c）2020 Elsevier Masson SAS。版权所有。

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  • 来源
    《Aerospace science and technology》 |2020年第9期|106019.1-106019.10|共10页
  • 作者

    Li Guanxiao; Zhang Guoqing; Zhang Yuhang; Ji Lucheng; Gao Shaofei;

  • 作者单位

    Beijing Inst Technol Sch Aerosp Engn Key Lab Dynam & Control Flight Vehicle Beijing 100081 Peoples R China;

    Beijing Inst Technol Sch Aerosp Engn Key Lab Dynam & Control Flight Vehicle Beijing 100081 Peoples R China;

    Beijing Inst Technol Sch Aerosp Engn Key Lab Dynam & Control Flight Vehicle Beijing 100081 Peoples R China;

    Beijing Inst Technol Sch Aerosp Engn Key Lab Dynam & Control Flight Vehicle Beijing 100081 Peoples R China;

    Beijing Inst Technol Sch Aerosp Engn Key Lab Dynam & Control Flight Vehicle Beijing 100081 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

    Viscous boundary layer; Oblique detonation; Shock wave; Chemical reaction;

    机译：粘性边界层;斜爆射;冲击波;化学反应;

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