The influence of a vortex on a freely propagating laminar methane-air flame

被引：0
作者：
Ki Yong Lee
机构：
[1] Andong National University,School of Mechanical Engineering
来源：
KSME International Journal | 2004年 / 18卷
关键词：
Vortex; Equivalence; NO Emission Index; Field Equation; Flame Thickness;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The change in the NO emission indices (EINO) in a two-dimensional plane has been investigated, which is due to the interaction between a vortex and methane-air flames established at different equivalence ratios, by solving the field equation. After solving the field equation, the spatial distribution of G-values is obtained. The NO emission index is calculated after applying the appropriate relation between the G-values and the NO production rate or the mass fraction of methane obtained from the library of freely propagating flames created from detailed simulations. When a vortex exists in a reacting flow field, in general EINO slightly increases, whereas EINO is lowered in the vicinity of the vortex regardless of flow direction. A change in vortex size has negligible impact on EINOT but increasing the vortex strength slightly increases EINOt in the domain of this study.
引用
收藏
页码：857 / 864
页数：7
相关论文
共 23 条
[1]  
Ashurst. W. M.(1989)Flame Generation of Vorticity : Vortex Dipoles from Monopoles Combust. Sci. and Tech. 66 17-37
[2]  
McMurtry P. A.(1988)Flame Front Propagation in Nonsteady Hydrodynamic Fields Combust. Sci. and Tech. 62 273-284
[3]  
Ashurst W. T.(1983)Viscosity Solutions of Hamilton-Jacobi Equations Trans. Amer. Math. Soc 277 1-42
[4]  
Sivashinsky G. I.(1984)Two Approximations of Solutions of Hamilton-Jacobi Equations Math. 43 1-19
[5]  
Yakhot V.(1982)Numerical Study of a Flame in a Karman Vortex Street Combust. Flame 47 255-267
[6]  
Crandall M. G.(1988)Field Equation for Interface Propagation in an Unsteady Homogeneous flow Field Phys. Rev. A 17 2728-2731
[7]  
Lions P. L.(1989)Mechanism and Modeling of Nitrogen Chemistry in Combustion Prog. Energy Combust. Sci. 15 287-338
[8]  
Crandall M. G.(1984)Laminar Diffusion Flamelet Models in Non-Premixed Turbulent Combustion Prog. Energy Combust. Sci. 10 319-339
[9]  
Lions P. L.(2001)Flame Propagation, Flame- Vortex Interaction, Flame Cusping, Flameholding KSME International J. 15 623-629
[10]  
Karasalo I.(1991)Simulations of Flame-Vortex Interactions Combust. Flame 84 343-360
123