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首页> 外文期刊>International journal of hydrogen energy >Effect of cavity back height on mixing efficiency of hydrogen multi-jets at supersonic combustion chamber
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Effect of cavity back height on mixing efficiency of hydrogen multi-jets at supersonic combustion chamber

机译：腔体背高度对超声燃烧室氢多喷射氢气混合效率的影响

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摘要

Stable fuel distribution and mixing is noteworthy for increasing the efficiency of the scramjet engine at high-speed flight. In this work, numerical studies are accomplished to inspect and disclose the effects of cavity back height on the fuel (hydrogen) spreading inside the cavity flameholder at supersonic flow. The effects of both positive and negative back height on fuel distribution are explained by analysis of the three-dimensional jet contour. The implications of multi-jets directions on the hydrogen distribution are also presented in this research. RANS equations with the SST turbulence model are employed for the computational investigations of 3-D supersonic air and fuel inside the cavity. Our outcomes show that the injection of the opposing multi-jets is more effective on fuel mixing when the back height is positive. However, multi hydrogen co-jet distributes the fuel jets homogenous inside the cavity for negative cavity back height. According to our results, the weakening the main circulation improves the mixing performance inside the cavity. (C) 2020 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
机译：稳定的燃料分配和混合是值得注意的，以提高高速飞行的斯普拉克喷头发动机的效率。在这项工作中，实现了数值研究来检查和公开在超声波流量的腔体持有者内部燃料（氢）对燃料（氢）的影响。通过对三维喷射轮廓的分析，解释了正负背高度对燃料分布的影响。在本研究中还介绍了多喷射方向对氢气分布的影响。具有SST湍流模型的RAN方程用于计算3-D超声波空气和腔内的燃料的计算研究。我们的结果表明，当后高度为正的燃料混合时，对相对的多喷射的注射更有效。然而，多氢共同射流将燃料射流分配在腔内壳体内部的负腔背部高度。根据我们的结果，主要循环的弱化改善了腔内的混合性能。 （c）2020氢能源出版物LLC。 elsevier有限公司出版。保留所有权利。

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  • 来源
    《International journal of hydrogen energy》 |2020年第51期|27828-27836|共9页
  • 作者

    Jiang Yu; Poozesh Amin; Marashi Seyed Maziar; Moradi R.; Gerdroodbary M. Barzegar; Shafee Ahmad; Li Zhixiong; Babazadeh Houman;

  • 作者单位

    China Univ Min & Technol Sch Mechatron Engn Xuzhou 211006 Jiangsu Peoples R China;

    KN Toosi Univ Technol Ctr Excellence Design & Simulat Space Syst Fac Aerosp Engn Tehran Iran;

    Babol Noshirvani Univ Technol Dept Mech Engn Babol Iran;

    Khazar Univ Sch Engn & Appl Sci Dept Chem Engn Baku Azerbaijan;

    Babol Noshirvani Univ Technol Dept Mech Engn Babol Iran;

    Ton Duc Thang Univ Inst Computat Sci Div Computat Phys Ho Chi Minh City Vietnam|Ton Duc Thang Univ Fac Elect & Elect Engn Ho Chi Minh City Vietnam;

    Minjiang Univ MJU BNUT Dept Joint Res Ctr Renewable Energy & Su Fujian Univ Marine Intelligent Ship Equipment Engn Res Ctr Fuzhou 350108 Peoples R China|Univ Wollongong Sch Mech Mat Mechatron & Biomed Engn Wollongong NSW 2522 Australia;

    Ton Duc Thang Univ Dept Management Sci & Technol Dev Ho Chi Minh City Vietnam;

  • 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

    Hydrogen jets; Fuel mixing; Supersonic flow; Combustion chamber; Cavity flameholder;

    机译：氢气喷射;燃料混合;超音速流动;燃烧室;腔扑窗;

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