THE EFFECTS OF LEAKAGES IN ROOFS WITH VENTILATED AIR LAYERS-A CFD APPROACH

摘要：

The following paper is focused on hygrothermal behaviour of roofs with ventilated air layers subjected to air leakages in their internal decks (the internal partial construction located below the ventilated air layer). Possibilities of CFD modelling of such constructions are discussed in the first part of the paper including the problem of introduction of water vapour diffusion into calculation. A brief comparison of results from CFD analysis and from calculation based on a technical standard is also included. The main part of the paper includes a case study concerning various effects of leakages in three basic types of ventilated roofs. General conclusion discussing the significance of leakages is included in the final part of the paper.

关键词： CFD analysis ventilated roofs leakages heat and moisture transfer condensation risk

作者: Zbynek Svoboda

作者单位: Department of Building Structures, Czech Technical University,Thakurova 7, 166 29 Prague, Czech Republic,

会议类型: 国际会议

会议名称: 第10届建筑模拟国际会议

会议地点: 北京

会议语种:英文

在线出版日期: 2007-09-03（万方平台首次上网日期，不代表论文的发表时间）