The constant-volume propagating spherical flame method for laminar flame speed measurement  

用于测量层流火焰速度的定容球形传播火焰方法(英文)

作　　者：Mahdi Faghih 陈正 

机构地区：[1]State Key Laboratory for Turbulence and Complex Systems (SKLTCS), Department of Mechanics and Engineering Science,College of Engineering, Peking University

出　　处：《Science Bulletin》2016年第16期1296-1310,共15页科学通报（英文版）

基　　金：supported by the National Natural Science Foundation of China(51322602)

摘　　要：Laminar flame speed is one of the most important intrinsic properties of a combustible mixture. Due to its importance, different methods have been developed to measure the laminar flame speed. This paper reviews the constant-volume propagating spherical flame method for laminar flame speed measurement. This method can be used to measure laminar flame speed at high pressures and temperatures which are close to engine-relevant conditions. First, the propagating spherical flame method is introduced and the constant-volume method （CVM） and constant- pressure method （CPM） are compared. Then, main groups using the constant-volume propagating spherical flame method are introduced and large discrepancies in laminar flame speeds measured by different groups for the same mixture are identified. The sources of discrepancies in laminar flame speed measured by CVM are discussed and special attention is devoted to the error encountered in data processing. Different correlations among burned mass fraction, pressure, temperature and flame speed, which are used by different researchers to obtain laminar flame speed, are summarized. The performance of these correlations are examined, based on which recommendations are given. Finally, recommendations for future studies on the con- stant-volume propagating spherical flame method for laminar flame speed measurement are presented.层流火焰速度是预混燃气的重要燃烧特性.目前已有多种方法被用来测量层流火焰速度.定容球形传播火焰方法能够测量接近于内燃机燃烧工况下的层流火焰速度,本文对该方法进行了综述.首先介绍并比较了定容和定压球形传播火焰方法;接下来讨论了导致定容球形传播火焰方法测量误差的各种因素,重点分析比较了各种数据处理模型的优缺点,并对实验数据处理给出了建议;最后对定容球形传播火焰方法的研究进行了展望.

关 键 词：Laminar flame speed Propagatingspherical flame Constant-volume method Burnedmass fraction Methane/air 

分 类 号：TQ038[化学工程]