Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/6659
Title: High-resolution data-driven models of Daylight Redirection Components
Authors: Grobe, Lars Oliver
Wittkopf, Stephen
Kazanasmaz, Zehra Tuğçe
Grobe, Lars Oliver
Kazanasmaz, Zehra Tuğçe
Izmir Institute of Technology. Architecture
Keywords: Daylight Redirecting Components
Bidirectional Scatter Distribution Function
Daylighting
Radiance
Daylight simulation
Issue Date: May-2017
Publisher: TU Delft Open
Source: Grobe, L. O., Wittkopf, S., and Kazanasmaz, Z. T. (2017). High-resolution data-driven models of Daylight Redirection Components. Journal of Facade Design and Engineering, 5(2), 87-100. doi:10.7480/jfde.2017.2.1743
Abstract: Daylight Redirecting Components (DRCs) guide daylight to zones with insufficient daylight exposure. They reduce energy demand for lighting, heating and cooling, and improve visual and thermal comfort. The data-driven model in Radiance is a means to model DRCs in daylight simulation. Rather than internal optical mechanisms, their resulting Bidirectional Scattering Distribution Function (BSDF) is replicated. We present models of two DRCs that are generated from measurements. The impact of the following three necessary steps in the generation of data-driven models from measured BSDF shall be evaluated: 1) interpolation between measurements at sparse sets of incident directions; 2) extrapolation for directions that cannot be measured; 3) application of a directional basis of given directional resolution. It is shown that data-driven models can provide a realistic representation of both DRCs. The sensitivity to effects from interpolation differs for the two DRCs due to the varying complexity of their BSDFs. Due to the irregularity of the measured BSDFs, extrapolation is not reliable and fails for both tested DRCs. Different measurement and modeling protocols should be applied to different class systems, rather than aiming at a common low-resolution discretization.
URI: https://doi.org/10.7480/jfde.2017.2.1743
http://hdl.handle.net/11147/6659
ISSN: 2213-3038
2213-3038
Appears in Collections:Architecture / Mimarlık
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection

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