锅炉水冷壁数学模型研究  

Study on the Mathematical Model of Boiler Water Wall

作　　者：张宁[1] 李斌[1] 王子兵[2] 宁丽媚[1] 

机构地区：[1]华北电力大学能源与动力工程学院,河北保定071003 [2]河北理工大学,河北唐山063009

出　　处：《锅炉技术》2009年第6期28-32,67,共6页Boiler Technology

摘　　要：水冷壁数学模型是锅炉水冷壁动态特性研究的关键。在分析和总结前人研究成果的基础上,将锅炉的水冷壁数学模分为固定边界法和移动边界法两大类。重点介绍了移动边界法数学模型,对采用Lagrange流体质点追踪思想的移动边界法、采用非线性集总参数的移动边界法和基于热量节点与流量节点的移动边界法数学模型的特点和基本计算方法进行了比较,指出了各种方法的优缺点。Mathematical model of water wall is the key to the study of boiler dynamic characteristics. According to the analysis and summary of the previous studies, the mathematical model of boiler water wall is divided into two kinds, which are fixed boundary method and moving boundary method. This paper is focus on the introduction of the moving boundary method. Three typical moving boundary models, which are the model based on the Lagrange motion coordinate system, the model based on multi subsections and lumped-parameter moving boundary method, the model based on heat nodes and flow nodes, were compared and analyzed. The advantages and disadvantages of each models were indicated.

关 键 词：锅炉 水冷壁 数学模型 移动边界 

分 类 号：TK223.3[动力工程及工程热物理—动力机械及工程]