Numerical simulation of turbulent jet diffusion flames by means of two-equation heat transfer model

被引:5
|
作者
Torii, S [1 ]
机构
[1] Kagoshima Univ, Dept Mech Engn, Kagoshima 8900065, Japan
关键词
turbulent jet diffusion flame; k-epsilon model; (t2)over-bar-epsilon(t) heat transfer model; laminarization;
D O I
10.1016/S0196-8904(01)00053-X
中图分类号
O414.1 [热力学];
学科分类号
摘要
The present study deals with a numerical analysis of thermal transport phenomena in a turbulent jet diffusion flame of hydrogen spouting from a vertical circular nozzle. The k-epsilon turbulence and (t(2)) over bar-epsilon (t), heat transfer models, and the eddy-dissipation model are employed to simulate thermal-fluid flow fields and combustion phenomena, respectively. The governing boundary-layer equations are discretized by means of a control volume finite-difference technique and are numerically solved. It is found that (i) the model employed here can be applied to combustion phenomena, and (ii) the presence of flame causes a substantial attenuation in the turbulent kinetic energy, resulting in the occurrence of laminarization. (C) 2001 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:1953 / 1962
页数:10
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