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首页> 外文期刊>Building and Environment >Development and validation of a Monte Carlo-based numerical model for solar analyses in urban canyon configurations
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Development and validation of a Monte Carlo-based numerical model for solar analyses in urban canyon configurations

机译：基于蒙特卡洛的数值模型的开发和验证，用于城市峡谷配置中的太阳分析

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摘要

Highly- and retro-reflective materials have recently been investigated and proposed as a new urban coating solution to reduce the so-called urban heat island effect. The present study aims at providing a numerical model for assessing inter-buildings solar reflections when these materials are applied to urban canyon's surfaces. The proposed model includes a function that accounts for sunray angle dependency of the solar reflectance, which is specifically important with regard to retro-reflective behavior. The novelty of this numerical model based on a Monte Carlo simulation approach implemented in the Matlab simulation environment is to conduct full ray-tracing solar analyses which can reproduce the energy exchange phenomena and simulate optical material properties. Experimental validation and inter-software comparison are carried out with measured data collected in an experimental facility in La Rochelle, France, in addition to simulation results from the Radiance-based Diva for Rhino tool. The results of the numerical model developed are in line with the values measured in the physical model (daily percent variation of 1.3% in summer) and within the boundary conditions defined in the present work. The residues, which were calculated for the hourly values throughout the day, are found to be in the range of +/- 10 W/m(2), with the arithmetic average and standard deviation equal to - 2 W/m(2) and 7 W/m(2) respectively.
机译：最近已经研究了高反射性和逆反射性材料，并提出了一种新的城市涂层解决方案，以减少所谓的城市热岛效应。本研究旨在提供一种数值模型，用于评估将这些材料应用于城市峡谷表面时建筑物之间的太阳反射。所提出的模型包括一个函数，该函数考虑了太阳反射率的太阳角度依赖性，这对于回射行为特别重要。基于在Matlab仿真环境中实现的蒙特卡罗仿真方法的此数值模型的新颖之处在于，可以进行完整的射线追踪太阳分析，该分析可以重现能量交换现象并模拟光学材料特性。除了基于Radiance的Diva for Rhino工具的模拟结果之外，还使用在法国拉罗谢尔（La Rochelle）的实验设施中收集到的测量数据进行实验验证和软件间比较。开发的数值模型的结果与物理模型中测得的值一致（夏季每日变化百分比为1.3％），并且在当前工作中定义的边界条件内。根据一天中每小时的小时值计算得出的残留量在+/- 10 W / m（2）的范围内，算术平均值和标准偏差等于-2 W / m（2）和7 W / m（2）。

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  • 来源
    《Building and Environment》 |2020年第3期|106638.1-106638.12|共12页
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  • 作者单位

    CIRIAF Interuniv Res Ctr Pollut & Environm Mauro Perugia Italy;

    CIRIAF Interuniv Res Ctr Pollut & Environm Mauro Perugia Italy|Univ Perugia Dept Engn Perugia Italy;

    Norwegian Univ Sci & Technol NTNU Fac Architecture & Design Dept Architecture & Technol Trondheim Norway;

    Univ La Rochelle LaSIE UMR CNRS 7356 La Rochelle France|IRSTV FR CNRS 2488 Nantes France;

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  • 正文语种 eng
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  • 关键词

    Solar analyses; Full ray-tracing assessment; Monte Carlo method; 2D urban canyon; Cool materials;

    机译：日光分析;全面的光线追踪评估;蒙特卡罗方法;2D城市峡谷;酷材料;

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