空气动力学学报2025，Vol.43Issue(4)：30-42,13.DOI:10.7638/kqdlxxb-2024.0104
高速列车开孔式风阻制动板设计及安装参数研究
Research on the design and installation parameters of the braking plate with opening holes for high-speed trains
摘要
Abstract
With the continuous increase in train speeds,aerodynamic braking plates have become a critical solution to address insufficient emergency braking forces.To improve the braking efficiency,a perforated braking plate and systematically investigates its design parameters(number,spacing,and diameter of holes)and installation parameters(angle and quantity).A numerical aerodynamic model of a high-speed train equipped with braking plates was established,and the RANS method based on the SST k-ω turbulence model was employed to evaluate the aerodynamic performance of both flat and perforated braking plates.The effects of key parameters on braking performance were analyzed.The findings reveal that the perforated plate significantly enhances braking force compared to the flat plate.The braking force initially increases with the number of holes,hole spacing,and hole diameter,peaking at 8 holes,135 mm spacing,and 20 mm diameter,beyond which it declines.Optimal braking performance is achieved when the perforated plate is installed perpendicular to the horizontal plane(90°).Under these optimized conditions(8 holes,135 mm spacing,20 mm diameter,90° angle),the aerodynamic drag of the train increases by 4.65%.Additionally,the braking force initially rises with the number of installed plates,reaching maximum effectiveness at 12 plates,and subsequently decreases.关键词
制动板/增阻/高速列车/数值模拟/参数优化/气动阻力Key words
braking plate/aerodynamic drag enhancement/high-speed train/numerical simulation/parameter optimization/aerodynamic drag分类
交通运输引用本文复制引用
李鹏,李睿,陈嘉辉,郑培杰,王喜红..高速列车开孔式风阻制动板设计及安装参数研究[J].空气动力学学报,2025,43(4):30-42,13.基金项目
甘肃省科技厅计划项目(22JR11RA150) （22JR11RA150）
