摘要
提出了一种评价建筑围护结构选材的数值预测方法,建立了一套整体求解固体-流体区域连续性方程、动量方程和能量方程的数值模拟方法。具体分析了建筑围护结构厚度、建筑围护结构材料的热传导率对室内环境的影响。数值预测结果表明:该方法能够真实反映室内环境。为评价建筑围护结构选材对室内环境的影响找到了一种实用有效的方法。为工程建设时建筑围护结构的选材、围护结构经济厚度的确定提供了设计依据及客观分析手段。
The present work is aimed at investigating the scope of the numerical prediction method in solving conjugate type of problems, where conduction plays an important role, simultaneously with convection. The continuity, momentum and energy equations are simultaneously solved in the entire solid - fluid domain. The effects of conduction in the wall are studied for two different values of the wall thickness (0.4 and 0.2) with two different values of dimensionless conductivity of the wall (2.0 and 5.0) .The computation result and predictor test show that this procedure can fully reflect conjugate conduction with natural convection in enclosure. A Practical and effective approach has been found for numerical study of conjugate natural convection in enclosure.
出处
《建筑热能通风空调》
2002年第3期30-32,共3页
Building Energy & Environment
基金
国家自然科学基金(项目编号59708004)
关键词
建筑
围护结构
共轭传热
自然对流
热传导率
数值预测
building enclosure,conjugate heat transfer,natural convection,conductivity,wall thickness,nu-merical prediction
