Numerical simulation of hydrogen/air jet diffusion flame at NAL

被引：0
|
作者：
Mizobuchi, Y [1 ]
Takaki, R [1 ]
Ogawa, S [1 ]
机构：
[1] Natl Aerosp Lab, Computat Sci Div, Chofu, Tokyo 1828522, Japan
来源：
SMART CONTROL OF TURBULENT COMBUSTION | 2001年
关键词：
numerical simulation; diffusion jet flame; turbulence; fractal dimension;
D O I：
暂无
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
Diffusion flames by subsonic hydrogen jet injection into still air are numerically simulated with a fine grid system whose grid spacing is several times as large as the Kolmogorov scale. The result shows fairly good agreement with the experiment in the flame lift-off height and the calculated energy spectra are fairly sound. The fractal dimension of hydrogen mole fraction iso-surface is analyzed and the results show that the fractal dimension of the interface is 2.3-2.4 in unburned regions and decreases in burned regions, which coincides with the experimental measurements. The swirled injection effect is investigated and it is shown that the flame lift-off height becomes shorter by the swirl effect.
引用
收藏
页码：84 / 95
页数：12
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