The assessment of the performance of balconies using computational fluid dynamics

Zhengtao Ai, C. M. Mak, J. L. Niu, Z. R. Li

Research output: Contribution to journalJournal articleResearchpeer-review


This article presents a numerical study of ventilation performance of balconies using computational fluid dynamics. The pressure coefficients distributed on the opposite walls of a five-storey building model, both with and without balconies, were studied under variation of the wind direction, balcony dimensions and building height. The effect of balconies on the capacity for wind-induced natural ventilation is discussed. The numerical results show good agreement with the experiments of Chand et al. They also indicate that a balcony enhances the cross-ventilation of intermediate floors but weakens that of the ground and top floors, by significantly changing the pressure distribution on the windward wall. Finally, the ventilation performance of a balcony is not greatly affected by variations in its size but is slightly weakened as the height of the building increases.Practical application: This study provides information and guidance in how best to incorporate the use of a balcony in building development at the design stage.
Original languageEnglish
JournalBuilding Services Engineering Research & Technology
Issue number3
Pages (from-to)229-243
Number of pages15
Publication statusPublished - 2011
Externally publishedYes

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