中南大学学报（自然科学版）2017，Vol.48Issue(11)：3132-3140,9.DOI:10.11817/j.issn.1672-7207.2017.11.038
头部参数对高速列车明线交会气动性能的影响
Effects of shape parameters on aerodynamic performance of high speed trains passing each other in open air
摘要
Abstract
Pressure wave and aerodynamic forces induced by two trains with different streamlined lengths and section lines passing each other in open air were investigated using the three-dimensional, compressible N-S equations,k-ε turbulence model and slip grid method. The results show that the peak-to-peak value of head wave from the present numerical method is in good agreement with that of the full-scale experiment, and the relative error is 4.9%. The peak-to-peak values of pressure waves, lateral forces and rolling moments are reduced by 27.0%, 39.2% and 36.2%, respectively, as the streamlined length increases from 8 m to 12 m. For the main profiles of the train head, the horizontal section profile contributes most to the aerodynamic performance when two trains passes. When the slope of horizontal section profile increases from 0.076 to 0.184, the peak-to-peak values of pressure wave, lateral forces, rolling moments are severally increased by 12.1%, 7.3% and 8.5%,respectively. The influence of longitudinal profile on the train aerodynamic performance is relatively small. As the slope of longitudinal profile increases from 0.505 to 0.713, these peak-to-peak values are increased by 1.90%, 0.65% and 0.89%, respectively. When the slope of cross section profile increases from 0.194 to 0.235, these peak-to-peak values are increased by 4.1%, 3.1% and 4.0%, respectively.关键词
高速列车/头部参数/明线交会/气动性能Key words
high-speed train/nose parameters/trains passing each other in open air/aerodynamic performance分类
交通工程引用本文复制引用
杜健,杜俊涛,田爱琴,田洪雷,刘堂红..头部参数对高速列车明线交会气动性能的影响[J].中南大学学报（自然科学版）,2017,48(11):3132-3140,9.基金项目
国家高技术研究发展计划(863计划)项目(2012AA112001) （863计划）
中车青岛四方项目(SF/JS-马字-2015-516) (Project(2012AA112001) supported by the National High-Tech Research and Development Program (863 Program) of China （SF/JS-马字-2015-516）
Project (SF/JS-Ma-2015-516) supported by CRRC Qingdao Sifang Co.Ltd.) （SF/JS-Ma-2015-516）
