Inhibition Effects of CH_(4)/CH_(3)OH on Dimethyl Ether Cool Flames

作     者：ZHOU Xun ZHANG Rui YANG Shenghua LIU Dong ZHOU Xun;ZHANG Rui;YANG Shenghua;LIU Dong

作者机构：Key Laboratory of Thermal Control of Electronic EquipmentMinistry of Industry and Information TechnologyNanjing210094China Advanced Combustion LaboratorySchool of Energy and Power EngineeringNanjing University of Science and TechnologyNanjing210094China 

出 版 物：《Journal of Thermal Science》 (热科学学报（英文版）)

年 卷 期：2023年第32卷第6期

页      面：2284-2296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：The authors gratefully acknowledge the support from the National Key R&D Program of China(2016YFB0600100) the Fundamental Research Funds for the Central Universities(30919012104) 

主　　题：cool flame dimethyl ether methane methanol non-premixed counterflow flame 

摘      要：CH_(4)/DME mixtures can be used for engines and gas turbines,and have already been studied for many ***,DME has a strong cool flame phenomenon,which will greatly influence the ignition and combustion characteristics of following hot ***,the cool flame characteristics of CH_(4)/DME mixture are very important for their ***,the inhibition effect of CH_(4)on DME cool flames has been discovered,but the mechanisms of the inhibition effects lack further verification and *** this study,the inhibition effects were investigated via both experiments and *** order to validate the inhibition effects,a comparison fuel of CH_(3)OH/DME was also used in this *** extinction limits,flame temperatures and combustion products of the cool flames of the CH_(4)/DME and CH_(3)OH/DME mixtures were measured using a counterflow burner,and the reaction paths and heat release rate were derived from the *** results indicate that CH_(4)and CH_(3)OH will both inhibit the cool flame of DME via competing with DME for OH and O radicals,and CH_(3)OH has stronger inhibition effects than CH_(4),because it is more competitive and produces more CH2O,which inhibits the oxidation of *** HPMech-v3.3 closely agrees with the experimental data,but still needs to be improved.