翼板制动气动性能数值分析  

Aerodynamic Quality Analysis of Wing Plate Brake

作　　者：崔涛[1] 张卫华[1] 

机构地区：[1]西南交通大学牵引动力国家重点实验室,四川成都610031

出　　处：《铁道机车车辆》2009年第6期1-2,27,共3页Railway Locomotive & Car

基　　金：国家973计划项目(2007CB714700);国家自然科学创新研究群体科学基金(50821063);国家自然科学杰出青年科学基金(50525518)

摘　　要：在列车上布置若干翼板。采用Κ-ε湍流模型,通过求解三维黏性N-S方程,对不同行车速度下、翼板工作与否多种工况,进行流动结构分析和气动阻力计算。各翼板的阻力系数采用不同运行速度下阻力系数的平均值,对列车不同运行速度下翼板的制动减速度进行计算。随着列车运行速度的提高,翼板制动能力不断提高。列车运行速度为300、400 km/h时,翼板所提供的制动减速度分别为-0.139、-0.248 m/s2。翼板制动可以作为高速列车辅助制动的一种方式。Some wing plates were installed on the train. The flow structure was analyzed and aerodynamic resistance was computed through 3D viscid N - S equations with the K - ε turbulence model for different running speed with/without wing plate. The mean of aerodynamic resistance coefficients of each wing plating was used as aerodynamic resistance coefficient of the wing plate. The braking decelerations were computed at different nmning speed. The braking ability of wing plate is increased when the running speed is rising. The braking deceleration reaches - 0.139 m/s^2 and - 0.248 m/s^2 when the train is running at speed of 300 km/h and 400 km/h respectively. The wing plate can be used as one of the auxiliary brakes for high - speed train.

关 键 词：列车制动 翼板 气动阻力 

分 类 号：V211.3[航空宇航科学与技术—航空宇航推进理论与工程] U270.35[机械工程—车辆工程]