Fast Climate-Based Glare Analysis and Spatial Mapping

Jones, Nathaniel L.

doi:10.26868/25222708.2019.210267

Cited by 10 publications

(5 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Imageless DGP takes less time to simulate than an equivalent 2phase DDS illuminance calculation and offers sufficient accuracy for predicting glare category and annual distributions for scenarios limited to clear glazing and rough specular transmission (where DGP is well correlated with illuminance). Confirming the limitations mentioned by Jones (2019), imageless DGP should not be used with low transmission glazing, fabric roller shades, or specular reflections. ClimateStudio offers tremendous potential both for its graphical interface, progressive results, and utilization of hardware-acceleration.…”

Section: Discussionmentioning

confidence: 82%

“…Therefore, unlike an illuminance-only approach, it can have some knowledge of the angular distribution of light. Imageless DGP was previously validated against 2-phase daylight coefficient images and eDGPs simulations (Jones, 2019). The scene was a corner open office with two fenestrations: clear glazing and geometrically modelled venetian blinds.…”

Section: Imageless Dgpmentioning

confidence: 99%

“…The point-based methods evaluated are: simplified DGP (DGPs) (Wienold, 2009), enhanced simplified DGP (eDGPs) (Wienold, 2009), imageless DGP (Jones, 2019), ClimateStudio annual glare (www.solemma.com), raytraverse (Wasilewski et. al 2021), and adaptive glare coefficients (AGC) .…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A Critical Comparison of Annual Glare Simulation Methods

2022

View full text Add to dashboard Cite

Recently, there have been multiple proposals for faster methods to calculate glare metrics, daylight glare probability (DGP) in particular. This is driven simultaneously by the lengthy times required to simulate DGP with a conventional image-based approach and accumulating evidence from subjective glare evaluation experiments showing that accounting for both the saturation and contrast in a view improves the accuracy of a glare prediction. While some of these methods have been presented with their own validations, comparisons of accuracy across methods are limited by the differences in tested scenarios and resulting distributions of daylight conditions. This study compares six point-based methods and two zonal estimations for quickly calculating hourly DGP values from three viewpoints with different relationships to the window across a range of scenarios. These include scenarios with direct and semi-specular transmission and others with specular and semi-specular reflection. We find that while some of these fast methods closely align with results from a reference simulation, others introduce large and consequential errors.

show abstract

Section: Discussionmentioning

confidence: 82%

Section: Imageless Dgpmentioning

confidence: 99%

See 1 more Smart Citation

A Critical Comparison of Annual Glare Simulation Methods

2022

View full text Add to dashboard Cite

show abstract

“…The past few decades have witnessed tremendous progress in daylight and glare simulation methods, from the conventional static methods, Daylight Factor (DF), to simulation-based approaches 25 that involve dynamic methods, Daylight Coefficient (DC) 26,27 and Climate-based Daylight Modelling (CBDM). 28,29 Later, several more efficient approaches for annual CBDM, such as 3-, 5-and 6-Phase methods, [30][31][32] along with real-time simulation methods, 24,33 were developed.…”

Section: Visual Comfort Simulation Methodsmentioning

confidence: 99%

An occupant-centric approach for spatio-temporal visual comfort assessment and optimization in daylit sports spaces

Liu

Shen

Yuan

2023

Indoor and Built Environment

View full text Add to dashboard Cite

Most visual comfort analysis is based on glare detections in limited fixed view scenes, but sports spaces present challenges given occupants’ spatial and view directional variations in sports-related visual tasks. This paper proposes an occupant-centric approach for spatio-temporal visual comfort assessment and optimization (ST-VCAO) in daylit sports spaces by better considering the occupants’ movement behaviour. It introduces the movable view scenes (MVS) in glare simulations and further accelerates the ST-VCAO process using the GPU-based parallel simulation combining response surface methodology. The proposed approach was applied to a real case building in Harbin, China. Annual daylight and glare simulations in two tennis courts with a total of 500 MVS were performed using Perez all-weather sky model with Chinese standard weather data. Results indicate that the proposed approach could sufficiently clarify the spatial variance and temporal variation of visual comfort across all MVS, which is appropriate for sports spaces. Meanwhile, using the developed workflow, the total computational time could be saved by 27.08% (Case 1) or 71.25% (Case 2). Amongst all Pareto solutions, the optimum alternative upon the worst one observed 200% (Case 1) or 50.7% (Case 2) higher visual comfort.

show abstract

“…The document includes recommendations for: 1) Indoor daylight provision; (2) View out; (3) Exposure to sunlight; and (4) Protection from glare. Previous works focused mainly on the implementation of the "Indoor daylight provision" and "Protection from glare" criteria [2]- [5]. Instead, the proposed paper focuses on the "View out" and "Exposure to sunlight" sections; namely, it introduces a computational approach to facilitate compliance assessment at early design stages.…”

Section: Introductionmentioning

confidence: 99%

A Computational Approach for Checking Compliance with European View and Sunlight Exposure Criteria

Brembilla¹,

Azadi²,

Nourian³

2021

Preprint

View full text Add to dashboard Cite

The paper presents open-source computational workflows for assessing the "Exposure to sunlight" and "View out" criteria as defined in the European standard EN 17037 "Daylight in Buildings", issued by the European Committee for Standardization. In addition to these factors, the standard document also addresses daylight provision and protection from glare, both of which fall out of the scope of this paper. The purpose of the standard is stated as 'encouraging building designers to assess and ensure successfully daylit spaces'. The standard document proposes verification methods for performing such assessments, albeit without recommending a simulation procedure for computing the aforementioned criteria. The workflows proposed in this paper are arguably the first attempt to standardize these assessment methods using de-facto open-source standard technologies currently used in practice. The approach of this work is twofold: establish that the compliance check can be systematically performed on a 3D model by a novel simulation tool developed by the authors; and highlighting the additional assumptions that need to be implemented to build a robust and unambiguous tool within existing open-source frameworks. 1 KEY INNOVATIONS• Formulating procedures for computational assessment of EN 17037 criteria for sunlight exposure and view out • Standardizing inputs and outputs for the proposed computational assessment procedures • Devising Python workflows utilizing the Radiance simulation engine and Honeybee from Ladybug Tools for running sunlight exposure and view analyses PRACTICAL IMPLICATIONSThe tool presented in this paper offers an open-source solution to check compliance with EN 17037 criteria for "View out" and "Exposure to sunlight". The tool will be made available to designers, consultants and researchers. Furthermore, the paper presents suggestions to policy-makers on how the compliance procedures could be made more robust and better integrated into computational design workflows.

show abstract

Fast Climate-Based Glare Analysis and Spatial Mapping

Cited by 10 publications

References 0 publications

A Critical Comparison of Annual Glare Simulation Methods

A Critical Comparison of Annual Glare Simulation Methods

An occupant-centric approach for spatio-temporal visual comfort assessment and optimization in daylit sports spaces

A Computational Approach for Checking Compliance with European View and Sunlight Exposure Criteria

Contact Info

Product

Resources

About