Experimental study on interference effect of rarefaction wave on laminar propagating flame  

作　　者：SUNJinhua LIUYi WANGQingsong CHENPeng 

机构地区：[1]StateKeyLaboratoryofFireScience,UniversityofScienceandTechnologyofChina,Hefei230026,China

出　　处：《Chinese Science Bulletin》2005年第9期919-922,共4页

基　　金：This work was supposed by“100 Talents Project”of the Chinese Academy of Sciences;China NKBRSF Project(“973”Project,No.2OO1CB4O96O6).

摘　　要：In order to study the interference effect of rare- faction wave on the laminar flame propagating structure and pressure characteristics of methane-air mixture, a small scale combustion chamber has been built. The techniques of high speed Schlieren photograph, pressure measurement and so on, are used to study the influence of rarefaction wave on the laminar flame propagating through methane-air mixture. The results show that, after the rarefaction wave acts on the propagation laminar flame, the laminar combustion is fully transformed into turbulent combustion just during several milliseconds, which leads to a sharp increase in the burning surface area and the pressure rise rate.In order to study the interference effect of rare- faction wave on the laminar flame propagating structure and pressure characteristics of methane-air mixture, a small scale combustion chamber has been built. The techniques of high speed Schlieren photograph, pressure measurement and so on, are used to study the influence of rarefaction wave on the laminar flame propagating through methane-air mixture. The results show that, after the rarefaction wave acts on the propagation laminar flame, the laminar combustion is fully transformed into turbulent combustion just during several milliseconds, which leads to a sharp increase in the burning surface area and the pressure rise rate.

关 键 词：甲烷 燃烧性质 稀薄波 干涉作用 压力作用 

分 类 号：O623.11[理学—有机化学]