Wind tunnel modeling experiments on airflow characteristics of underground metro station with sunken squaresJianjian Zhao, Jing Liu, Hu Gao, Zhen Wang, Jiankai Dong, Chongxu Jiang and Yanling NaE3S Web Conf., 356 (2022) 02003DOI: https://doi.org/10.1051/e3sconf/202235602003