Impact of roof shape on air pressure, wind flow and indoor temperature of residential buildings

Q4 Engineering

International Journal of Sustainable Building Technology and Urban Development Pub Date : 2016-07-14 DOI:10.1080/2093761X.2016.1167645

M. Mahdavinejad, K. Javanroodi

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引用次数: 10

Abstract

AbstractThe aim of this study is to investigate different roof shapes with respect to air flow and indoor temperature in order to find efficient roof shapes for residential buildings in Tehran, Iran. First, an analytical model is defined and then various roof types are modelled. Theoretical modelling is presented to assess the accuracy of the measurement procedures and the uncertainty of experimental modelling. Mathematical and computational field dynamics (CFD) modelling and simulation methods are applied; a κ-e standard model and finite difference discretisation technique are used to simulate the velocity and pressure path lines as well as the temperature. The results indicate that the energy performance of a domed roof is more efficient compared to flat, vaulted and pitched roofs. In the case of indoor temperature, a domed roof is about 8 K cooler. Also, the wind flow pattern around domed and pitched roofs is more complex; differences in the wind velocity and pressure are noticeable compared to the oth...

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屋面形状对住宅风压、风量及室内温度的影响

摘要本研究的目的是研究不同的屋顶形状对空气流动和室内温度的影响，以便为伊朗德黑兰的住宅建筑找到有效的屋顶形状。首先，定义了一个解析模型，然后对各种顶板类型进行了建模。提出了理论模型来评估测量过程的准确性和实验模型的不确定性。应用了数学和计算场动力学(CFD)建模和仿真方法;采用κ-e标准模型和有限差分离散化技术对速度、压力路径线和温度进行了数值模拟。结果表明，与平屋顶、拱形屋顶和斜屋顶相比，圆顶屋顶的节能效果更好。就室内温度而言，圆顶屋顶的温度要低8摄氏度左右。此外，圆顶和斜屋顶周围的气流模式更为复杂;与其他地方相比，风速和压力的差异是明显的。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Sustainable Building Technology and Urban Development Engineering-Building and Construction

CiteScore

1.20

自引率

0.00%

发文量

期刊介绍： The International Journal of Sustainable Building Technology and Urban Development is the official publication of the Sustainable Building Research Center and serves as a resource to professionals and academics within the architecture and sustainability community. The International Journal of Sustainable Building Technology and Urban Development aims to support its academic community by disseminating studies on sustainable building technology, focusing on issues related to sustainable approaches in the construction industry to reduce waste and mass consumption, integration of advanced architectural technologies and environmentalism, sustainable building maintenance, life cycle cost (LCC), social issues, education and public policies relating to urban development and architecture .