交变热流下燃烧室外对流传热特性数值研究  

NUMERICAL STUDY ON EXTERNAL CONVECTION HEAT TRANSFER OF COMBUSTION CHAMBER UNDER PERIODICAL HEAT FLUX

作　　者：李星[1] 贾力[1] 

机构地区：[1]北京交通大学机械与电子控制工程学院动力系,北京100044

出　　处：《工程热物理学报》2011年第1期129-132,共4页Journal of Engineering Thermophysics

基　　金：国家863高技术研究发展计划项目(No.2006AA05Z228)

摘　　要：采用数值计算对水对流换热边界下天然气燃烧及外部对流传热特性进行了研究。研究了相同燃烧功率不同水入口流速下燃烧及传热特性,得到各个区域交界面温度分布及燃烧室内辐射换热与对流换热占总换热量比例。对天然气高温空气燃烧技术在工业锅炉等设备上的应用具有很好的指导意义。Combustion characteristics of natural gas（NG） in a symmetrical combustion chamber and external convection heat transfer characteristics of water flow have been investigated numerically. The effects of water inlet velocity on combustion and external heat transfer characteristics under same heat power were discussed.The temperatures on every interface,details of radiation and convection heat transfer have been obtained.It provides a fundamental knowledge for application of NG high temperature air combustion on industrial boiler.

关 键 词：燃烧 数值计算 对流换热 交变热流 

分 类 号：TK224[动力工程及工程热物理—动力机械及工程]