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

Le résumé fourni par la source

This electronic investigates the wind environment optimization of office build-ing clusters in hot-summer and cold-winter regions through computation-al 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 pres-sure 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, re-ducing natural ventila-tion efficiency to 1.2 air changes per hour. Through ex-treme 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 quanti-tative benchmarks for green building wind environment assessment and ad-vancing climate-responsive urban design practices.

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