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

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 Eulerian-Lagrangian approach,a subgrid-scale kinetic energy stress model,and a finite-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 20um~100nm.The instantaneous temperature map shows the close interaction between the coherent structures and the combustion reaction.

关键词： ethanol-air two-phase flow spray combustion largeeddy simulation

作者: K.Li L.X.Zhou C.K.Chan

作者单位: Department of Engineering Mechanics,Tsinghua University,Beijing 100084,China Department of Applied Mathematics,Hong Kong Polytecnic University,Hong Kong,China

会议类型: 国际会议

会议名称: The 7th International Symposium on Coal Combustion(第七届国际煤燃烧学术会议)

会议地点: 哈尔滨

会议语种:英文

页码: 87-90

在线出版日期: 2011-07-19（万方平台首次上网日期，不代表论文的发表时间）