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首页> 外文会议>Conference on agricultural and forest meteorology >A CFD-GENERATED WIND FIELD LIBRARY FEASIBILITY STUDY: MAXIMUM WIND DIRECTION INTERVAL
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A CFD-GENERATED WIND FIELD LIBRARY FEASIBILITY STUDY: MAXIMUM WIND DIRECTION INTERVAL

机译：CFD生成的风现场图书馆可行性研究：最大风向间隔

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摘要

Computational fluid dynamics (CFD) models are capable of computing 3D flow patterns around arbitrary building arrangements and have shown promise for building-to-urban scale transport and dispersion problems (e.g., Murakami, 1997; Brown et al., 2001). However, their utility for planning and assessment applications has been limited due to computational requirements, expertise requisites, and relatively long turn-around time. The possibility of using a library of pre-computed mean wind and turbulence fields for a prescribed urban site has been suggested as a way of circumventing the usual complaints, while simultaneously providing more detailed and accurate information to planners than simpler urban dispersion models. In this paper, we will present a first step in evaluating whether or not this approach is feasible, i.e., examine the computing and storage requirements to build a wind library. To populate such a database, one needs to specify the prevailing wind direction interval. Using Lower Manhattan as a test case, we will try to determine the wind direction interval required to adequately describe flow patterns in a downtown area for transport and dispersion problems.
机译：计算流体动力学（CFD）模型能够计算任意建筑布置的3D流模式，并为建立城市规模运输和分散问题显示了承诺（例如，Murakami，1997; Brown等，2001）。然而，由于计算要求，专业知识要求，相对较长的扭转时间，他们的规划和评估申请的实用性受到限制。已经建议使用用于规定的城市网站的预先计算的平均风和湍流字段库的可能性作为规避通常的投诉的方式，同时为规划者提供比简单的城市分散模型更详细和准确的信息。在本文中，我们将在评估这种方法是否是可行的，我将介绍一个评估是否是可行的，即检查计算和存储要求以构建风库。要填充此类数据库，需要指定现行的风向间隔。使用较低的曼哈顿作为测试用例，我们将尝试确定在市中心区域中充分描述用于运输和分散问题的流动模式所需的风向间隔。

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