Large-eddy Simulation of Ethanol Spray-Air Combustion and Its Experimental Validation

作     者：李科 周力行 CHAN C.K LI Ke;ZHOU Lixing;CHAN CK

作者机构：Department of Engineering MechanicsTsinghua University School of Energy and EnvironmentInner Mongolian University of Science and Technology Department of Applied MathematicsHong Kong Polytecnic University 

出 版 物：《Chinese Journal of Chemical Engineering》 (中国化学工程学报（英文版）)

年 卷 期：2014年第22卷第2期

页      面：214-220页

核心收录：

学科分类：080702[工学-热能工程] 08[工学] 0807[工学-动力工程及工程热物理] 

基　　金：Supported by the National Natural Science Foundation of China(5073600,51266008) the Research Grant Council of Hong Kong(5105/08E,B-Q10H) 

主　　题：ethanol-air two-phase flow spray combustion large-eddy simulation 

摘      要：Large-eddy simulation of spray combustion is under its rapid *** combustion models were used by different ***,these models are less validated by detailed experimental *** this paper,large-eddy simulation(LES)of ethanol spray-air combustion was made using an Eulerian-Lagrangian approach,a subgrid-scale kinetic energy stress model,and a filtered finite-rate combustion model,neglecting the sub-grid scale reaction *** simulation results are compared with experimental dada in the literature and validated in *** LES obtained statistically averaged gas temperature is in much better agreement with the experimental results than Reynolds averaged(RANS)modeling using the most complex probability density function(PDF)equation combustion *** instantaneous LES results show the coherent structures of the shear region near the high-temperature flame zone and the fuel vapor concentration map,indicating that the droplets are concentrated in this shear *** instantaneous temperature,oxygen and carbon dioxide concentration maps show the close interaction between the coherent structures and the combustion reaction.