Effects of different auditorium forms on ventilation in a football stadium

Abstract

The purpose of this paper is to explore the influence of enclosed auditorium types on the wind ventilation environment inside a large semi-outdoor stadium. Stadia can be divided into three basic forms: all enclosed type auditorium, two sided and three-sided type auditorium. Different forms could have different effects on the wind environment inside a stadium, and the wind environment could have an impact on the competition in the stadium. In this study, a computer simulated hydrodynamics technology was used to model the stadium in different enclosed auditorium types. The wind environment in the stadium under different ventilation angles was simulated. The study found that for all round type stadia, the best inlet wind angle for the stadium ranges from 75° to 90°, which would avoid high wind velocity influences. For two-sided auditorium type stadia, 100 m sprinting track should be placed at the position near the auditorium. For inlet wind direction, 60° to 90° are the best inlet wind angles most favourable for sports competition. Hence, different stadium forms correspond different optimal inlet wind angles, while sport competition would also be impacted by the wind flow condition inside stadium.