圆球物体非稳态导热平均温度集总参数法探讨  

Lumped Parameter Analysis Method of Unsteady-State Conduction of Sphere

作　　者：顾祥红[1] 

机构地区：[1]大连大学建筑工程学院,辽宁大连116622

出　　处：《大连交通大学学报》2009年第1期91-93,101,共4页Journal of Dalian Jiaotong University

基　　金：辽宁省教育厅高等学校科学研究计划资助项目(2004F104)

摘　　要：对于温度场随时间变化的非稳态导热问题,集总参数法是最简单的求解方法,但是这一方法只适用于Bi<1的条件.拓展传统的非稳态导热集总参数方法,提出在0<Bi<∞条件下,圆球物体非稳态导热平均温度集总参数分析方法,建立了平均温度瞬态响应关系式.讨论球体平均取值位置,并进行数值分析,给出了适于工程应用的辅助参数表,比通用的Heisler图解法更为简洁方便.Lumped parameter analysis method is the most convenient way to solute unsteady-state. But the method sets a limit on Bi 〈 1. The paper extends the traditional lumped parameter analysis method of unsteady-state. Under the convection boundary 0 〈 Bi 〈 ∞, a mean temperature lumped parameter analysis method is studied and the mean temperature response formula has been established. Taking a sphere as an example, the paper presents the regular pattern of the transient mean temperature value and discusses the numerical analysis. The method for solving the unsteady-state conduction in the paper is more practical than the M.P. Heisler charts.

关 键 词：非稳态导热 集总参数方法 温度瞬态响应 

分 类 号：O551.3[理学—热学与物质分子运动论]