Parametric modelling for the efficient design of daylight strategies with complex geometries

Rahimzadeh, Shahab Din, Garcia-Hansen, Veronica, Drogemuller, Robin, & Isoardi, Gillian (2013) Parametric modelling for the efficient design of daylight strategies with complex geometries. In Cutting Edge : The 47th International Conference of the Architectural Science Association (ANZAScA), Architectural Science Association, School of Architecture, The Chinese University of Hong Kong.

Abstract

Daylight devices are important components of any climate responsive façade system. But, the evolution of parametric CAD systems and digital fabrication has had an impact on architectural form so that regular forms are shifting to complex geometries. Architectural and engineering integration of daylight devices in envelopes with complex geometries is a challenge in terms of design and performance evaluation. The purpose of this paper is to assess daylight performance of a building with a climatic responsive envelope with complex geometry that integrates shading devices in the façade. The case study is based on the Esplanade buildings in Singapore. Climate-based day-light metrics such as Daylight Availability and Useful Daylight Illuminance are used. DIVA (daylight simulation), and Grasshopper (parametric analysis) plug-ins for Rhinoceros have been employed to examine the range of performance possibilities. Parameters such as dimension, inclination of the device, projected shadows and shape have been changed in order to maximize daylight availability and Useful Daylight Illuminance while minimizing glare probability. While orientation did not have a great impact on the results, aperture of the shading devices did, showing that shading devices with a projection of 1.75 m to 2.00 m performed best, achieving target lighting levels without issues of glare.

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ID Code: 64562
Item Type: Conference Paper
Refereed: Yes
Additional URLs:
Keywords: Parametric Modelling, Climate-based Daylight Metrics, daylight simulation, Complex Geometry, CBDM, glare
Subjects: Australian and New Zealand Standard Research Classification > BUILT ENVIRONMENT AND DESIGN (120000) > ARCHITECTURE (120100) > Architectural Science and Technology (incl. Acoustics Lighting Structure and Ecologically Sustainable Design) (120104)
Divisions: Current > QUT Faculties and Divisions > Creative Industries Faculty
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2013 Please consult the authors
Deposited On: 17 Nov 2013 23:44
Last Modified: 22 Jun 2017 14:46

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