空气动力制动制动风翼纵向位置制动力规律

Rule of Aerodynamics Braking Force in Longitudinal Different Position of High-speed Train

摘要:

分析了全列车均装制动风翼时,不同纵向位置处制动风翼周围流场特性,数值计算得到迎风面第1块制动风翼产生的制动力最大,其余制动风翼产生的制动力逐渐减小,且减小幅度逐渐减慢的制动力规律.结合某高速列车车型,考虑减少受电弓影响,分析受电弓车辆不装制动风翼时,纵向位置各制动风翼产生制动力规律,并同每辆车均安装制动风翼时制动力规律进行对比.最后，对空气动力制动产生制动力效果进行了分析.

Abstract:

Characteristics of the flow field around the brake panels are analyzed when all carriages of the train are equipped with aerodynamic brake.The kinetic rule is acquired that the first windward brake panel produces the largest drag,and the drag is reduced step by step in the windward.Then,principle of the braking force is also studied by taking a high-speed train model as an example,when the vehicles with the pantographs are not equipped with brake panels in order to reduce the impact of brake panels on the pantograph.This principle of braking force is compared with the rule of braking force when all carriages are equipped with brake panels.Finally,an analysis is made of the braking force effect generated by aerodynamic brake.