高温低氧燃烧炉内等温流场特性的数值分析  

Numerical Analysis of Isothermal Flow Velocity Distribution in High Temperature Air Combustion Furnace

作　　者：王力军[1] 蔡九菊[1] 邹宗树[1] 郝玉玲[1] 

机构地区：[1]东北大学材料与冶金学院,辽宁沈阳110004

出　　处：《东北大学学报（自然科学版）》2003年第2期159-161,共3页Journal of Northeastern University(Natural Science)

基　　金：国家自然科学基金资助项目 ( 5 99740 2 3)

摘　　要：应用自行开发出的计算程序对高温低氧燃烧模型实验炉进行了三维等温流场的数值模拟·在燃料和空气的射流速度比分别取 3种不同值时 ,预报了炉内 3种典型的等温流场结构 ,分析了炉内多股射流间的相互作用及回流流动等流场特性·模拟结果表明 :在几何参数一定时 ,选择燃料和空气的射流速度比为同一数量级时 ,炉内的回流流动可以实现燃烧所需的低氧气氛 ,燃气射流能够利用这一低氧气氛实现高温低氧燃烧·数值预报结果与相关的实验观测基本符合·The three-dimensional distribution of the velocity value of isothermal flow in high temperature air combustion furnace was numerically simulated with a authors developed computer program. Three types of isothermal flow configuration were forecasted under the conditions of three different velocity ratios of fuel to air inject. The flow field properties of the inter-action among multi-injections and the recirculating flow were analyzed. It is shown that, under certain geometry parameters, the lower oxygen concentration in recirculating flow can be obtained in the furnace by selecting proper velocity ratio of fuel to air jet in same scalar level. The simulating conclusions are in agreement with the results of experimentation.

关 键 词：高温低氧燃烧炉 等温流场 数值模拟 回流流动 射流速度比 

分 类 号：TK16[动力工程及工程热物理—热能工程] TK175