The Impact of Urban Wind Environments on Natural Ventilation
The Impact of Urban Wind Environments on Natural Ventilation
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DOI：
10.1080/14733315.2012.11683967
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发表时间：
2012-06
影响因子：
1.5
通讯作者：
E. Turkbeyler;R. Yao;R. Nobile;T. Bentham;D. Lim
中科院分区：
文献类型：
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作者：
E. Turkbeyler;R. Yao;R. Nobile;T. Bentham;D. Lim
摘要本文的目的是说明在评估自然通风的可用性时，城市风环境的影响。本文对英国阅读大学的五个建筑单元的城市气流进行了数值研究。利用计算流体力学软件包ANSYS模拟了六种典型的城市风环境，并对自然通风的潜力进行了评估。本研究着重分析了三种典型的建筑形式（街道峡谷、半封闭和庭院）对当地风环境的影响。模拟结果也进行了比较，从六个位置上的建筑群收集的实验数据。该研究表明，使用区域天气数据形成的通风策略可能倾向于高估自然通风和冷却的潜力，这是由于城市形态的影响，它创造了一个独特的小气候。城市风流模式的特征可作为指导方针，可用于评估自然或混合通风的设计和性能以及被动冷却的机会。
Abstract The aim of this paper is to illustrate the impact of urban wind environments when assessing the availability of natural ventilation. A numerical study of urban airflow for a complex of five building blocks located at the University of Reading, UK is presented. The computational fluid dynamics software package ANSYS was used to simulate six typical cases of urban wind environments and to assess the potential for natural ventilation. The study highlights the impact of three typical architectural forms (street canyons, semi-enclosures and courtyards) on the local wind environment. Simulation results were also compared with experimental data collected from six locations on the building complex. The study demonstrates that ventilation strategies formed using regional weather data may have a propensity to over-estimate the potential for natural ventilation and cooling, due to the impact of urban form which creates a unique microclimate. Characteristics of urban wind flow patterns are presented as a guideline and can be used to assess the design and performance of natural or hybrid ventilation and the opportunity for passive cooling.