Description
This study investigates glare through microstructures. For this purpose three Radiance (physics-based ray-tracing engine) workflows have successfully been created. One for creating BSDF data, one for conducting five-phase image-based simulations, and one for calculating photometric quantities and glare metrics. The first workflow is thus used to create one Klems resolution BSDF and six tensor trees, all of a microstructure fenestration system. The second workflow is then used to conduct 12 annual five-phase simulations, six using the common BSDF material modifier for recalculating the direct sunlight contribution and six using the recently introduced aBSDF material for aiding specular transmissions, using a peak extraction algorithm. The third workflow is then used to calculate various glare metrics and photometric quantities, including DGP and vertical illuminance. A following statistical comparison of the results have found that aBSDF provides more realistic results both in terms of render and glare. The results have yielded that aBSDF can mitigate the rank and resolution related biases for BSDFs without any embedded geometry. Though the presence of a rank related bias, do imply that the simulated system is anisotropic. Thus it is concluded that the most realistic glare predictions through microstructures, using matrix based simulations, are obtained by using an anisotropic tensor tree with peak extraction (aBSDF). It is also concluded that a microstructure can not be considered a glare protective mean, as all the simulations yielded too high DGPs for more than 5% of common office hours (8-18 and 9-17).Concurrently to conduct the simulations, a DSLR, camera is attempted calibrated to function as luminance camera, according to previous conducted work. This method exhibits promising results when compared to a calibrated LMK luminance camera, but is ultimately found to require additional equipment and calibration before it can be brought into the field for future work.
| Period | 23 Aug 2021 → 4 Feb 2022 |
|---|---|
| Examinee | Emil Pultz Olldag Kjeldsen |
| Degree of Recognition | National |