Validation of a 3D pore scale prediction model for the thermal conductivity of porous building materials

被引：8
作者：
Van De Walle, Wouter [1 ]
Janssen, Hans [1 ]
机构：
[1] Katholieke Univ Leuven, Dept Civil Engn, Bldg Phys Sect,Kasteelpk Arenberg 40 Box 2447, BE-3001 Heverlee, Belgium
来源：
11TH NORDIC SYMPOSIUM ON BUILDING PHYSICS (NSB2017) | 2017年 / 132卷
关键词：
porous building materials; thermal conductivity; pore scale prediction model; 3D image based; MICROSTRUCTURE; CONCRETE;
D O I：
10.1016/j.egypro.2017.09.759
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
The performance of a recently developed numerical model for the prediction of the thermal conductivity of porous building materials is investigated using a sintered glass filter material. A combination of micro-CT scanning and pore volume distribution measurements is used to characterize the material's microstructure. Thermal simulations are performed on the obtained 3D images of the microstructure and are compared with experimental measurements of the thermal conductivity. Both dry and water saturated samples are used, enlarging the validation set and the range of thermal conductivities. The model shows good agreement with the experiments. Future improvements are discussed. (C) 2017 The Authors. Published by Elsevier Ltd.
引用
收藏
页码：225 / 230
页数：6
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