摘要
对瞬态不稳态导热过程进入正常情况阶段的判据,不同的文献中有不同的要求。本文通过具体实例,对正常情况阶段温度场的简化计算引起的误差,进行了具体地计算和分析,以求得到在不同判据下的简化计算引起误差的具体数量概念,并进而确定一般工程对该类简化计算中,进入正常情况阶段的恰当判据。
Requirements concerning the criterion of transient unsteady state conduction during the process of entering the stage of normal condition are quite different as they appear in various literature. This paper, by means of practical examples, undertakes specific calculation and analysis of the errors caused by shorthand calculations on the temperature field at normal condition stage, so as to abtain a specific quantitative concept of errors caused by these calculations using different criteria, and futher to determine the appropriate criterion in such shorthand calculation for general engineering problem at the stage of normal condition.
出处
《北京建筑工程学院学报》
1990年第2期95-100,共6页
Journal of Beijing Institute of Civil Engineering and Architecture
关键词
不稳态
导热
误差
计算
平壁材料
transient unsteady—state conduction, normal condition stage (regular regime), criterion, shorthand calculation, error
