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A simplified mathematical model for urban microclimate simulation

机译：用于城市小气候模拟的简化数学模型

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摘要

Techniques for modelling urban microclimates and urban block surfaces temperatures are desired by urban planners and architects for strategic urban designs at the early design stages. This paper introduces a simplified mathematical model for urban simulations (UMsim) including urban surfaces temperatures and microclimates. The nodal network model has been developed by integrating coupled thermal and airflow model. Direct solar radiation, diffuse radiation, reflected radiation, long-wave radiation, heat convection in air and heat transfer in the exterior walls and ground within the complex have been taken into account. The relevant equations have been solved using the finite difference method under the Matlab platform. Comparisons have been conducted between the data produced from the simulation and that from an urban experimental study carried out in a real architectural complex on the campus of Chongqing University, China in July 2005 and January 2006. The results show a satisfactory agreement between the two sets of data. The UMsim can be used to simulate the microclimates, in particular the surface temperatures of urban blocks, therefore it can be used to assess the impact of urban surfaces properties on urban microclimates. The UMsim will be able to produce robust data and images of urban environments for sustainable urban design.
机译：城市规划者和建筑师在设计的早期阶段就需要用于城市微气候和城市地块表面温度建模的技术，以进行战略性城市设计。本文介绍了一种用于城市模拟（UMsim）的简化数学模型，其中包括城市表面温度和微气候。节点网络模型是通过整合热力和气流模型而开发的。已考虑到直接太阳辐射，扩散辐射，反射辐射，长波辐射，空气中的热对流以及建筑物外墙和地面中的热传递。相关方程已在Matlab平台下使用有限差分法求解。比较了模拟产生的数据和2005年7月至2006年1月在中国重庆大学校园内的真实建筑群中进行的城市实验研究所得的数据。结果表明，这两组数据具有令人满意的一致性数据的。 UMsim可用于模拟微气候，特别是模拟城市街区的地表温度，因此可用于评估城市地表特性对城市微气候的影响。 UMsim将能够为可持续的城市设计提供可靠的城市环境数据和图像。

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  • 来源
    《Building and Environment》 |2011年第1期|p.253-265|共13页
  • 作者

    Runming Yao; Qing Luo; Baizhan Li;

  • 作者单位

    School of Construction Management and Engineering, The University of Reading, Whiteknights, PO Box 219. Reading RC6 6AW, UK,The Faculty of Urban Construction and Environmental Engineering, Chongqing University, PR China,School of Construction Management and Engineering, The University of Reading, Whiteknights, PO Box 219. Reading RC6 6AW, UK;

    rnKey Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, PR China,The Faculty of Urban Construction and Environmental Engineering, Chongqing University, PR China;

    rnKey Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, PR China,The Faculty of Urban Construction and Environmental Engineering, Chongqing University, PR China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    coupled thermal and airflow; solar radiation; dem (digital elevation model); nodal network; urban microclimate simulation (UMsim);

    机译：热量和气流耦合;太阳辐射;dem（数字高程模型）;节点网络城市小气候模拟（UMsim）;

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