甲烷-空气湍流预混V形火焰特性的数值模拟  

NUMERICAL SIMULATION OF CHARACTERISTICS OF METHANE-AIR TURBULENT PREMIXED V-FLAMES

作　　者：王宝瑞[1] 雷宇[1] 张孝谦[1] 

机构地区：[1]中国科学院工程热物理研究所,北京100080

出　　处：《工程热物理学报》2004年第S1期229-232,共4页Journal of Engineering Thermophysics

基　　金：中国科学院知识创新工程重要方向项目(KJCX2-L02)

摘　　要：应用RNG K-ε湍流模型和EBU-Arrhenius燃烧速率模型,模拟了湍流预混V形火焰的起燃过程。数值模拟首先得出了圆柱形稳定杆后的卡门涡街,并进一步给出了火焰锋面在传播中的特征。在火焰点燃的初期,火焰的形状受到稳定杆尾流的卡门涡街的很大影响。随着火焰向前传播,涡街渐渐消失。火焰锋面的传播过程与差分干涉方法得到的实验测量值吻合较好。Numerical simulation of igniting progress of methane-air turbulent premixed V-flames was studied with RNG K-ε turbulent modei and EBU-Arrhenius combustion modei. Characteristics of wake flow behind the stabilizing rod were obtained. At the beginning of the ignition, shape of the flame was affected obviously by the vortex. The vortex fade away while the flame propagating downstream. The evolvement of the flame front agree well with experimental data from differential interference contrast method

关 键 词：预混燃烧 数值模拟 V形火焰 

分 类 号：TK16[动力工程及工程热物理—热能工程]