Large-eddy Simulation of Ethanol Spray Combustion Using a Finite-rate Combustion Model

被引：0
|
作者：
Li, K. [1 ]
Zhou, L. X. [1 ]
Chan, C. K. [2 ]
机构：
[1] Tsinghua Univ, Dept Engn Mech, Beijing 100084, Peoples R China
[2] Hong Kong Polytecn Univ, Dept Appl Math, Hong Kong, Hong Kong, Peoples R China
来源：
CLEANER COMBUSTION AND SUSTAINABLE WORLD | 2012年
基金：
中国国家自然科学基金;
关键词：
ethanol-air two-phase flow; spray combustion; large-eddy simulation;
D O I：
暂无
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
Large-eddy simulation of spray combustion is under its rapid development, but the combustion models are less validated by detailed experimental data. In this paper, large-eddy simulation of ethanol-air spray combustion was made using an EulerianLagrangian approach, a subgrid-scale kinetic energy stress model, and a fmite-rate combustion model. The simulation results are validated in detail by experiments. The LES obtained statistically averaged temperature is in agreement with the experimental results in most regions. The instantaneous LES results show the coherent structures of the shear region near the high-temperature flame zone and the fuel vapor concentration map, indicating the droplets are concentrated in this shear region. The droplet sizes are found to be in the range of 201.tm-100 m. The instantaneous temperature map shows the close interaction between the coherent structures and the combustion reaction
引用
收藏
页码：87 / 90
页数：4
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