Investigation on the potential of improving daylight efficiency of office buildings by curved facade optimization

Curved shapes are increasingly used in buildings recently, which not only enriches the appearance of buildings, but also provides new possibilities of improving building performance by shape design. However, existing research relating building performance with building shapes focuses mostly on regular shapes; the effects of curved shapes on building performance should be better addressed. This paper aims to implement design optimization for curved shapes and to explore the performance improvement that they can contribute. Specifically, the improvements in daylight efficiency of office buildings by optimized curved facades are investigated. A typical office building with a curved facade is parametrically modeled in Rhinoceros, simulated in daylight by DIVA, and optimized by Galapagos to maximize its area-weighted average UDI. 20 optimizations are conducted, with 3 levels of geometrical variations.

Recommended citation: Lu, Shuai, Borong Lin, and Chunxiao Wang. "Investigation on the potential of improving daylight efficiency of office buildings by curved facade optimization." In Building Simulation, vol. 13, pp. 287-303. Tsinghua University Press, 2020.
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