高度尺寸不同的空心砖复合传热性能的数值研究  

Numerical Simulation for Complicated Heat Transfer Performance of Hollow Brick with Different Height Sizes

作　　者：孙龙清[1] 李临平[1] 宋翀芳[1] 程锁明[1] 陶文铨[2] 何雅玲[2] 

机构地区：[1]太原理工大学环境科学与工程学院,太原030024 [2]西安交通大学能源与动力工程学院,热流科学与工程教育部重点实验室,西安710049

出　　处：《建筑科学》2015年第2期109-113,共5页Building Science

基　　金：山西省自然科学基金(2014011033-2)

摘　　要：本文采用纳入处理压力—速度耦合关系的新算法IDEAL的三维自编程序对外形尺寸(长×宽×高)为240mm×115 mm×90 mm、240 mm×115 mm×115 mm、240 mm×115 mm×140 mm、240 mm×115 mm×165 mm 4种高度共200种规格(每个高度50种规格)的空心砖进行了包括导热、对流及辐射换热复杂传热过程性能的数值模拟,旨在揭示在空心砖内部孔数及排列方式、长度和宽度相同的情况下,空心砖高度变化对其砌筑墙体当量导热系数的影响。结果表明:在研究的范围内,除个别砖型外,随着高度的增加,空心砖墙体的当量导热系数呈下降的趋势。当宽度方向的孔洞数给定时,随长度方向的孔洞数的增加,下降幅度先增加后减少,最大的降幅6.1%。This article uses three-dimensional self-programming code dealing with the coupling relationship between pressure and velocity by new algorithm IDEAL to make a numerical simulation of complicated heat transfer including conduction, convection and radiation in hollow brick walls on four hollow brick height of 240 mm ×115 mm ×90 mm, 240 mm× 115 mm ×115 mm, 240 mm × 115 mm × 140 mm and 240 mm × 115 mm × 165 mm, which have a total of 200 kinds of configuration （each height 50 kinds）. The aim is at revealing the influence of hollow brick height on the equivalent thermal conductivity of building walls when the hole number, arrangement, length and width are at the same. The results show that： within the scope of the study, with the increasing of the height, the equivalent thermal conductivity of hollow brick walls has a downward trend, except from individual brick type. Given the hole number in width, drop ratio increases and then decreases with increasing hole number in length, in which the biggest drop is of 6. 1%.

关 键 词：空心砖高度 数值模拟 复合换热 当量导热系数 

分 类 号：TK124[动力工程及工程热物理—工程热物理]