| 预混火焰拉伸和曲率效率的物理分析; Physical Analysis of Stretch and Curvature Effects on Premixed Flame | |
| 王培勇 ; Robert ; Pitz ; 李琼 ; 冯韬 | |
| 2012 | |
| 关键词 | 火焰拉伸效果 火焰曲率效果 优先扩散 预混火焰 湍流燃烧模型 flame stretch effect flame curvature effect preferential diffusion premixed flame turbulent combustion model |
| 英文摘要 | 湍流燃烧的基本火焰结构是拉伸的曲面涡管;拉伸流场中的管形火焰模拟了湍流燃烧的细微结构。本文对平面预混火焰、拉伸预混火焰和管形拉伸预混火焰进行了质量、能量和组分的守恒分析。通过对比这几种火焰,揭示了火焰拉伸效果是通过优先扩散改变火焰温度和熄火极限;而火焰曲率通过增强或削弱这种优先扩散效果来影响火焰温度,影响的大小和火焰厚度与火焰半径的比值呈正比。; The essential structure of turbulent combustion is stretched vortex tube,and this fine flame structure can be resembled by the tubular flame.A physical analysis of the mass,species and energy conservation is carried out on the classic plane prernixed flame,the opposed jet flame and the tubular flame.The comparison between the plane flame and the opposed jet flame reveals that the flame stretch effect results from preferential diffusion and changes prernixed flame temperature and extinction condition.The comparison between the opposed jet flame and the tubular flame shows that flame curvature changes prernixed flame temperature by strengthening or weakening the preferential diffusion,and the strengthening or weakening effect is proportional to the ratio of flame thickness to flame radius.; 国家自然科学基金资助项目(No.51106131);中央高校基本科研业务费专项资金资助(No.2010121045) |
| 语种 | zh_CN |
| 内容类型 | 期刊论文 |
| 源URL | [http://dspace.xmu.edu.cn/handle/2288/105586]  |
| 专题 | 航空航天－已发表论文 |
| 推荐引用方式 GB/T 7714 | 王培勇,Robert,Pitz,等. 预混火焰拉伸和曲率效率的物理分析, Physical Analysis of Stretch and Curvature Effects on Premixed Flame[J],2012. |
| APA | 王培勇,Robert,Pitz,李琼,&冯韬.(2012).预混火焰拉伸和曲率效率的物理分析.. |
| MLA | 王培勇,et al."预混火焰拉伸和曲率效率的物理分析".(2012). |
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