文章基本信息

标题：CFD Analysis of Convective Heat Transfer Coefficient on External Surfaces of Buildings
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作者：de Lieto Vollaro, Andrea ; Galli, Giorgio ; Vallati, Andrea 等
期刊名称：Sustainability
印刷版ISSN：2071-1050
出版年度：2015
卷号：7
期号：7
页码：9088-9099
出版社：MDPI, Open Access Journal
摘要：Convective heat transfer coefficients for external building surfaces are essential in building energy simulation (BES) to calculate convective heat gains and losses from building facades and roofs to the environment. These coefficients are complex functions of: building geometry, building surroundings, local air flow patterns and temperature differences. A microclimatic analysis in a typical urban configuration, has been carried out using Ansys Fluent Version 14.0, an urban street canyon, with a given H/W ratio, has been considered to simulate a three-dimensional flow field and to calculate the thermal fluid dynamics parameters that characterize the street canyon. In this paper, the convective heat transfer coefficient values on the windward external façade of the canyon and on the windward and leeward inner walls are analyzed and a comparison with values from experimental and numerical correlations is carried out.
关键词：urban canyon; convective heat transfer coefficient; CFD; fluid dynamic; thermal field