Taking the above-ground platform of Songjiang University Town Station of Shanghai Line 9 as the research object,this paper uses overlapping grid technology to simulate the train movement,studies the influence of train piston wind under the semi-high safety gate on the platform,numerically simulates the speed field and pressure field during the process of a single train entering,stopping and leaving the station,and analyzes the influence of train piston wind on the airflow distribution and air quality in the platform under three working conditions.The results show that the piston effect can increase the concentration of particulate matter at the platform,and it is necessary to prevent high concentrations of particles in the station from affecting passengers'health.
关键词
活塞风/地上站台/数值模拟/重叠网格/气流分布
Key words
piston wind/above-ground platform/numerical modeling/overlapping grid/airflow distribution
万方数据