WR型煤粉燃烧器一次风湍流混合特性的研究  

INVESTIGATION ON THE TURBULENCE MIXING CHARACTERISTIS OF PRIMARY AIR IN WR-TYPE PC BURNER

作　　者：惠世恩[1] 徐通模[1] 刘仲军[1] 郭宏生 王翠玲[1] 魏小林[1] 车得福[1] 张敢[1] 庄恩如[1] 沈引根[1] 

机构地区：[1]西安交通大学,上海锅炉厂

出　　处：《西安交通大学学报》1995年第6期65-69,共5页Journal of Xi'an Jiaotong University

摘　　要：用热线风速仪测量了ＷＲ型（宽调节比）燃烧器一次风射流的速度分布，Ｖ形稳燃体尾迹回流区的大小，以及边风与一次风组合射流的速度分布。用Ｋ－ε方法进行了数值计算，并将计算结果与实验结果进行了比较，试验和计算结果都表明，Ｉ边／Ｉ１，对射流半速度宽度和射流中心回流区有显著的影响；一次风口中的Ｖ形稳燃体和扩口角对稳定着火和适时补氧有明显的作用。The velocity profiles of primary air jets and the combination jets of primary air and side air the size of recirculation zone in the wake of V-gutter were measured by using hot wireanemometer on a cool model for WR type burner. The numerically predicted results with K-εtwo-equation model were compared with the experimental data, Both the predicted resultsand the experimental data show that Is/I1 has a considerable effect on the half width of thejet and the size of the central recirculation zone,and the V-gutter and the spread angle of theprimary air nozzle rim are beneficial to the stabilization of the flame and the real-time supplyof oxygen.

关 键 词：燃烧器 一次风 回流区 扰动混合特性 湍流 锅炉 

分 类 号：TK223.23[动力工程及工程热物理—动力机械及工程]