利用相空间重构方法分析层流扩散火焰燃烧不稳定现象
An Analysis of Laminar Co-flow Diffusion Flame Instability Based on Phase Space Reconstruction Method
查看参考文献20篇
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文摘
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本文利用相空间重构方法获得层流火焰燃烧不稳定的临界参数。利用光电倍增管捕获火焰发光强度随时间的变化信号,经相空间重构后获得三维相空间下的重构曲线。在不同的燃烧状态下,光强度重构曲线呈现出不同的特征,可用来区分燃烧状态.本文针对0.2~4.0 MPa下的甲烷/纯氧层流同轴扩散火焰光强信号进行相空间重构,获得了不同条件下燃烧稳定性的临界参数。并对火焰稳定燃烧、间歇震荡、持续震荡三种状态临界参数进行曲线拟合。 |
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其他语种文摘
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In this paper, the critical parameters of laminar flame combustion instability are investigated with phase space reconstruction method.Photomultiplier is employed to capture the signal of flame luminous intensity variation, and the variations are processed with phase space reconstruction method.In three-dimension phase space, the reconstructed curves present distinct shapes in different combustion states, and these differences are used to classify combustion states in this paper.In this paper, the methane/oxygen laminar diffusion flame under 0.2~4.0 MPa is investigated.The critical parameters of combustion stability under different conditions are obtained, and the curve fitting of three critical parameters of flame steady combustion, transition combustion and pulsation combustion is carried out. |
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来源
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工程热物理学报
,2020,41(6):1550-1555 【核心库】
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关键词
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甲烷/纯氧
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扩散火焰
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高压燃烧
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相空间重构
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地址
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1.
中国科学院力学研究所, 高温气体动力学国家重点实验室, 北京, 100190
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中国科学院大学工程科学学院, 北京, 100049
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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0253-231X |
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学科
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能源与动力工程 |
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基金
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国家自然科学基金资助项目
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中国科学院战略性先导科技专项
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文献收藏号
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CSCD:6752022
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