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| 地铁列车车头的紊态外流场数值仿真研究 | |
| 引用本文： | 羊玢,孙庆鸿,黄文杰.地铁列车车头的紊态外流场数值仿真研究[J].上海工程技术大学学报,2009,23(2):115-119,123. |
| 作者姓名： | 羊玢 孙庆鸿 黄文杰 |
| 作者单位： | 1. 南京林业大学汽车与交通工程学院,南京,210037 2. 东南大学机械工程系,南京,210096 3. 南京浦镇车辆厂城市轨道车辆研究所,南京,210031 |
| 基金项目： | 江苏省重大科技攻关项目，西南交通大学牵引动力国家重点实验室开放基金 |
| 摘 要： | 基于结构动力学和空气动力学理论，以三维不可压缩黏性流体的Navier-stokes方程和k-ε双方程紊流模型为基础，推导建立了地铁列车车头的空气动力学模型．对具有流线型头部形状的地铁B型列车以及通过变化流线型头部纵剖面或流线型头部长度设计出的3种新型列车车头的周围流场进行数值仿真．分析了地铁车辆在隧道中运行的动力学特性、气动特性、压力分布及其阻力系数，优化了车头流线型造型，达到了既减小车头气动阻力又使车头美观大方的目的． |
| 关 键 词： | 地铁列车 数值仿真 空气动力学 |
Numerical Simulation of Turbulent Flow Field of Metro Train Head |
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| YANG Bin,SUN Qing-hong,HUANG Wen-jie.Numerical Simulation of Turbulent Flow Field of Metro Train Head[J].Journal of Shanghai University of Engineering Science,2009,23(2):115-119,123. | |
| Authors: | YANG Bin SUN Qing-hong HUANG Wen-jie |
| Affiliation: | YANG Bin, SUN Qing-hong, HUANG Wen-jie(1 College of Automobile and Traffic Engineering, Nanjing Forestry University, Nanjing 210037, China; 2. Department of Mechanical Engineering, Southeast University, Nanjing 210096, China; 3. Urban Rail Vehiele Institute, Nanjing Puzhen Rolling Stock Works, Nanjing 210031, China) |
| Abstract: | According to the theories of structure dynamics and the aerodynamics, based on Navier-stokes and k-ε equations turbulent model, the metro train head aerodynamic model was deduced. The outside flow fields around B-type metro vehicle with streamlined head and three new train heads designed by changing the profile or length of longitudinal projection were simulated with 3-D incompressible viscous fluid theory. This paper analysed metro train's dynamics and pneumatic characteristics and pressure distribution while running in the tunnel, calculated its air resistance coefficient, and optimized the head shape to diminish aerodynamic resistance and made the metro train heads beautiful and full of times sense. |
| Keywords: | metro train numerical simulation aerodynamic |
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