In order to increase the indoor air change rate of gymnasiums and improve the thermal comfort of exercise sites under natural ventilation condition in hot and humid regions, by taking Guangzhou as an example, the symmetrical and unsymmetrical models, as well as the unsymmetrical model with corbel table of a gymnasium are simulated and calculated with Fluent and other software. The results indicate that, in the same external condition, the unsymmetrical models with and without corbel table are both more effective in increasing the wind velocity of the exercise site and the integral air change rate of the gymnasium than the symmetrical model, especially the former. Moreover, based on the unsymmetrical model with corbel table, window-opening ventilation strategies for sports competition are further put forward, and the influences of natural ventilation on the thermal comfort of the exercise site in different form models and use modes are discussed.%为提升湿热地区体育馆在自然通风调节下的室内换气次数,改善运动场地舒适度,以广州地区为例,利用Fluent等软件对对称形态、非对称形态及非对称挑檐形态的体育馆模型进行模拟计算.结果表明:设定相同外部条件时,非对称形态及非对称挑檐形态相比于对称形态可提升场地风速和馆内整体换气次数,且非对称挑檐形态时的提升幅度最大.基于非对称挑檐形态进一步提出了体育馆适应赛时使用的开窗通风策略,探讨了不同形态及不同使用模式下自然通风对运动场地热舒适性的影响.
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