受电弓气动特性随列车时速及工作高度变化规律的数值分析  

Numerical Analysis of Pantograph Aerodynamic Characteristics with Variation of Train Speed and Working Height

作　　者：王东屏[1] 赵亚军 孙成龙 黄思俊 WANG Dongping;ZHAO Yajun;SUN Chenglong;HUANG Sijun(School of Mechanical Engineering,Dalian Jiaotong University,Dalian 116028,China;Beijing CRRC CED Railway Electric Techology Co.,Ltd,Beijing 100076,China)

机构地区：[1]大连交通大学机械工程学院,辽宁大连116028 [2]北京中车赛德铁道电气科技有限公司,北京100176

出　　处：《大连交通大学学报》2022年第1期32-36,42,共6页Journal of Dalian Jiaotong University

摘　　要：基于三维定常不可压缩N-S方程和k-ε两方程湍流模型,采用有限体积法,对1 600和2 800 mm升弓高度下受电弓不同时速的气动力进行数值模拟,得到受电弓在开口运行时的气动抬升力.计算结果表明:受电弓在工作高度2 800 mm时仿真结果与风洞试验结果较为一致,误差保持在10%以内.受电弓由工作高度2800降低至1 600 mm,受电弓各部件气动升、阻力基本都随着工作高度减小而绝对值减小,降幅基本保持在20 N以内.整弓的气动抬升力随着工作高度的减小而减小,降幅基本保持在60%以内.同一高度下整弓的气动抬升力都随着速度的增加而逐渐增大,工作高度2 800 mm时速度每增加40 km/h,气动抬升力增加约30 N;工作高度1 600 mm时速度每增加40 km/h,气动抬升力增加保持在10 N以内.Based on the three-dimensional constant incompressible N-S equation and thetwo-equation turbulence model, the finite volume method is used to simulate the aerodynamic forces of the pantograph at different speeds of 1 600 mm and 2 800 mm at the bow height. The aerodynamic uplift force of the pantograph operated by opening stomata was obtained. The results show that the simulation results are consistent with the tunnel test results when the working height of the pantograph is 2 800 mm, and the error is kept within 10%. The working height of the pantograph is reduced from 2 800 mm to 1 600 mm, and the aerodynamic lift and resistance of each component are basically reduced in absolute value with the reduction of the working height, and the reduction is basically kept within 20 N. The aerodynamic uplift force of the whole bow is decreased with the decrease of the working height with the decline basically remained within 60%. At the same height, the aerodynamic uplift force of the whole bow is gradually increased with the increase of speed. When the working height is 2 800 mm, the aerodynamic uplift force is increased by 40 km/h with the increase in lifting force about 30 N. When the working height is 1 600 mm, the aerodynamic uplift force is increased by 40 km/h with the increase of lifting force within 10 N.

关 键 词：受电弓 数值模拟 气动抬升力 工作高度 

分 类 号：U264.34[机械工程—车辆工程]