CFD Analysis of the Generic Isolated Gable Roof Stadium: Impact of Opening Direction and Roof Angle for Wind Drift in Badminton

Badminton is highly influenced by wind drift due to indoor ventilation, which changes the trajectory of the shuttlecock from the actual. To understand the influence of wind drift over different stadium configuration is studied using Computational Fluid Dynamics (CFD). CFD is an essential tool to assess and understand the impact of wind in the building environment for ventilation comforts. Many studies on natural or cross ventilation on the generic model and stadium infrastructure focus only on the ventilation comfort but limitedly on the wind influence like wind drift in badminton. Therefore, this paper presents a detailed study through computational analysis of the isolated generic model with three gable roof slopes ratio and two opening directions. The simulation is performed in a 3D steady Reynolds-Averaged Navier–Stokes (RANS) approach with the SST k–ω model. Validation is carried out with grid sensitivity study by comparing study of a published work with wind tunnel experiment data on a flat roof model. The results show that the gable roof in the longitudinal direction with a 6:12 and 4:12 sloped ratio performed better than a flat roof with a 6% and 13% volume flow rate higher with almost no wind drift near the ground (h=0.02m). The 2:12 sloped gable roof has a higher volume flow rate in both longitudinal and lateral wind flow than the flat roof, with 26% and 37 % higher but a more drifty environment.