首页|Numerical simulation and optimization of aerodynamic uplift force of a high-speed pantograph

Numerical simulation and optimization of aerodynamic uplift force of a high-speed pantograph

扫码查看
原文链接
  • 国家科技期刊平台
  • NETL
  • NSTL
  • 万方数据
Aiming at the problem that aerodynamic uplift forces of the pantograph running in the knuckle-down-stream and knuckle-upstream conditions are inconsistent,and their magnitudes do not satisfy the corresponding standard,the aerodynamic uplift forces of pantographs with baffles are numerically investigated,and an optimization method to determine the baffle angle is proposed.First,the error between the aerodynamic resistances of the pan-tograph obtained by numerical simulation and wind tunnel test is less than 5％,which indicates the accuracy of the numerical simulation method.Second,the original pan-tograph and pantographs equipped with three different baffles are numerically simulated to obtain the aerody-namic forces and moments of the pantograph components.Three different angles for the baffles are-17°,0° and 17°.Then the multibody simulation is used to calculate the aerodynamic uplift force of the pantograph,and the opti-mal range for the baffle angle is determined.Results show that the lift force of the baffle increases with the increment of the angle in the knuckle-downstream condition,whereas the lift force of the baffle decreases with the increment of the angle in the knuckle-upstream condition.According to the results of the aerodynamic uplift force,the optimal angle of the baffle is determined to be 4.75° when the running speed is 350 km/h,and pantograph-catenary con-tact forces are 128.89 N and 129.15 N under the knuckle-downstream and knuckle-upstream operating conditions,respectively,which are almost equal and both meet the requirements of the standard EN50367:2012.

High-speed pantographAerodynamic uplift forceBaffleNumerical simulationMultibody simulation

Zhiyuan Dai、Tian Li、Ning Zhou、Jiye Zhang、Weihua Zhang

展开 >

State Key Laboratory of Traction Power,Southwest Jiaotong University,Chengdu 610031,China

National Key Research and Development Program of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaState Key Laboratory of Traction Power

2020YFA07109025207231952072319121723082019TPL_T02

2022

铁道工程科学(英文)
西南交通大学

铁道工程科学(英文)

影响因子：0.403
ISSN：2662-4745
年,卷(期)：2022.30(1)
  • 7