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Benchmark of methods for annual glare risk assessment

机译：年眩光风险评估方法的基准

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Visual comfort in buildings has a critical impact on occupants' health and mental performance. Among the visual comfort functions, daylighting glare is the most complex phenomenon to assess by architects and practitioners. This paper aims to benchmark state-of-the-art methods for annual glare analysis and develop strategies to reduce the computational time (CPU time) without compromising the accuracy of glare calculations. The Radiancebased tool rtrace and the Radiance-based five-phase method (5pm) are applied to a single room. Analytical isotropic fabric systems are parametrized in terms of specular/diffuse scattering components and cut-off angle. Peak extraction considered by Radiance's aBSDF material primitive is key to having an accurate representation of the luminance maps and vertical illuminance at eye level and glare calculations. A minimum number of ambient bounces (ab parameter) of 4 when using Radiance's rtrace program achieves the best trade-off between accuracy in vertical illuminance and daylight glare probability (DGP), and CPU time. Based on semi-annual and five days per week simulations for visible sun positions, sampling strategies can decrease the CPU time for annual glare simulations up to 86% when considering clear sky conditions. The most suitable method for DGP simulations depends strongly on the Radiance parameters and the chosen sampling strategy.
机译：建筑物的视觉舒适性对居住者的健康和心理表现产生了关键影响。在视觉舒适功能中，灯光眩光是建筑师和从业者评估最复杂的现象。本文旨在为年度眩光分析的最先进方法进行基准，以减少计算时间（CPU时间），而不会影响眩光计算的准确性。射程基于刀具Rtrace和基于辐射的五相方法（5pm）施加到单个房间。分析各向同性织物系统在镜面/漫射散射部件和切断角度方面是参数化。 Radiance的ABSDF材料原语考虑的峰提取是具有在眼睛水平和眩光计算的亮度图和垂直照度的准确表示的关键。使用Radiance的Rtrace程序时，4的最小环境反弹（AB参数）达到垂直照度和日光眩光概率（DGP）和CPU时间之间的准确性之间的最佳权衡。基于半年和每周五天的可见太阳位置模拟，在考虑清晰的天空条件时，采样策略可以减少年度眩光模拟的CPU时间，高达86％。 DGP模拟最合适的方法在光线参数和所选的采样策略上强烈取决于强烈的方法。

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