Wind Environment Simulation Analysis of Office Buildings Based on PHOENICS: —A Case Study of Mianyang City Office Complex

Yuzhenru Sun; Yang Li; Baofeng Liang; Jun Qin

doi:10.63313/AERpc.9005

Authors

Yuzhenru Sun School of Architecture, Southwest Minzu University, Chengdu 610225, PR China Author
Yang Li School of Architecture, Southwest Minzu University, Chengdu 610225, PR China Author
Baofeng Liang School of Architecture, Southwest Minzu University, Chengdu 610225, PR China Author
Jun Qin School of Architecture, Southwest Minzu University, Chengdu 610225, PR China Author

DOI:

https://doi.org/10.63313/AERpc.9005

Keywords:

Office Buildings, CFD Wind Environment Analysis, Passive Ventilation, Simula-tion-Based Optimization

Abstract

This electronic investigates the wind environment optimization of office build-ing clusters in hot-summer and cold-winter regions through computational fluid dynamics simulations under dual-season conditions. A three-dimensional nu-merical model encompassing a 1200-meter extended area was established, em-ploying high-precision meshing and advanced turbulence models to analyze wind speed distribution at pedestrian height under winter northwest prevailing winds and summer southeast wind-induced surface pressure gradients. Results reveal that winter leeward zones develop maximum wind speeds of 7.2 m/s, with 18.3% of the area exceeding standard limits. Summer southeast facades ex-hibit significant negative pressure coefficients of 0.82, reducing natural ventila-tion efficiency to 1.2 air changes per hour. Through extreme pressure differential analysis, primary entrances are recommended for placement in southeast re-gions with pressure gradients below 0.3 to mitigate winter wind disturbances. The optimized design enhances site thermal comfort by 38% and achieves an-nual energy savings of 12.7 kWh/m², providing quantitative benchmarks for green building wind environment assessment and advancing climate-responsive urban design practices.

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