侧风风场特征对高速列车气动性能作用的研究
Research on Influence of Characteristics of Cross Wind Field on Aerodynamic Performance of a High-speed Train
查看参考文献15篇
|
文摘
|
侧风风场特征,如均匀风和大气底层边界速度型对高速列车在侧风环境下运行的安全性评估有直接影响.为了准确地评估侧风对在平原上运行的高速列车的影响,基于三维定常可压缩流动的NS方程,采用SSTk-ω两方程湍流模型和有限体积法,对时速350 km的动车组在均匀风和大气底层边界速度型风场中的流场和气动力特性分别进行了数值模拟计算和分析.结果表明:对在平原上运行的高速列车而言,作用于列车的气动升力,侧向力及倾覆力矩均随侧风风向角的增大而迅速增大;当风场为大气底层边界速度型时,列车顶部与底部及两个侧面的压力差小于风场为均匀风时的压力差,侧向力及倾覆力矩均小于风场为均匀风时的力及力矩,升力则随侧风风向角的增加具有不确定性.采用均匀风场评估高速列车在平原侧风环境中运行的安全性,会高估侧风对列车运行安全影响的风险,使得过低地限制列车的安全行驶速度,从而影响列车的正常运行效率.建议采用大气底层边界速度型风场进行评估 |
|
其他语种文摘
|
Characteristics of the cross wind field, such as uniform winds and lower atmospheric boundary layer winds, have directly influence on the operation safety of high-speed trains which run in the cross wind environment. In order to accurately assess the effect of cross winds on trains running on plains,on the basis of the three-dimensional steady compressible flow of NS equations, using the SST k-ω two-equation turbulence model and finite volume method, the flow field and aerodynamic characteristics of the high speed train running at 350 km/h in the cross wind field of uniform winds and lower atmospheric boundary layer winds were simulated numerically and analyzed. The results show as follows:For a high-speed train running under cross winds on a plain, the aerodynamic lift force, lateral force and overturning moment acting on the train increase rapidly with increasing of the wind direction angle;when the train runs through the lower atmospheric boundary layer, compared to the uniform wind filed, the pressure differences of the train at the top & bottom and on two sides are less, the lateral force and overturning moment are also less, and the aerodynamic lift force is of uncertainty in the case of increasing of the wind direction angle. Using the uniform wind field for evaluation of operation safety of high-speed trains running under cross winds on a plain will overestimate the risks cross winds may bring about in train operation and will over limit the train speed so that the normal train operation efficiency is affected. The lower atmospheric boundary layer winds are suggested to be used for evaluation of the aerodynamic performance of a train |
|
来源
|
铁道学报
,2011,33(4):22-30 【核心库】
|
|
DOI
|
10.3969/j.issn.1001-8360.2011.04.004
|
|
关键词
|
高速列车
;
均匀风
;
大气底层边界速度型
;
数值模拟
;
气动特性
|
|
地址
|
1.
北京交通大学土木建筑工程学院, 北京, 100044
2.
中国科学院力学研究所, 北京, 100190
|
|
语种
|
中文 |
|
文献类型
|
研究性论文 |
|
ISSN
|
1001-8360 |
|
学科
|
铁路运输 |
|
基金
|
国家“十一五”科技支撑计划重大项目
|
|
文献收藏号
|
CSCD:4186099
|
参考文献 共
15
共1页
|
|
1.
FUJ T.
Wind-induced Accidents of Train/Vehicles and Their Measure in Japan . Quarterly Report of Railway Technical Research Institute,1999:50-55
|
CSCD被引
1
次
|
|
|
|
|
2.
ANDERSSON E. Assessment of Train-overturning Risk due to Strong Cross-winds.
J. Rail and Rapid Transit, Proc. Instn Mech. Engrs,2004,218, Part F:213-223
|
CSCD被引
1
次
|
|
|
|
|
3.
ORELLANO A. On Side-wind Stability of High Speed Trains.
Vehicle System Dynamics Supplement,2003,40:143-160
|
CSCD被引
5
次
|
|
|
|
|
4.
CARRARINI A. Reliability Based Analysis of the Crosswind Stability of Railway Vehicles.
Journal of Wind Engineering and Industrial Aerodynamics,2007,95:493-509
|
CSCD被引
33
次
|
|
|
|
|
5.
李雪冰. 强风中高速列车空气动力学性能.
交通运输工程学报,2009,9(2):66-73
|
CSCD被引
14
次
|
|
|
|
|
6.
郗艳红. 高速列车侧风效应的数值模拟.
北京交通大学学报,2010,34(1):14-18
|
CSCD被引
19
次
|
|
|
|
|
7.
任尊松. 强侧风对高速列车运行安全性影响研究.
铁道学报,2006,28(6):46-50
|
CSCD被引
55
次
|
|
|
|
|
8.
高广军. 强横风下青藏线客车在不同高度桥梁上的气动性能分析.
中南大学学报,2010,41(1):376-380
|
CSCD被引
20
次
|
|
|
|
|
9.
蒋崇文. 平原上不同长度集装箱列车横风载荷的数值研究.
铁道学报,2010,32(5):18-24
|
CSCD被引
4
次
|
|
|
|
|
10.
周立.
流线型地铁列车头车设计及其气动性能分析,2006
|
CSCD被引
1
次
|
|
|
|
|
11.
周宇. k-ω SST两方程湍流模型中参数影响的初步分析.
空气动力学学报,2010,28(2):213-217
|
CSCD被引
50
次
|
|
|
|
|
12.
Khier W. Flow Structure Around Trains under Side Wind Conditions: a Numerical Study.
Computers & Fluids,2000(29):179-195
|
CSCD被引
2
次
|
|
|
|
|
13.
中华人民共和国建设部.
GB50009--2001建筑结构荷载规范,2002:72-73
|
CSCD被引
1
次
|
|
|
|
|
14.
王福军.
计算流体动力学分析:CFD软件原理与应用,2004
|
CSCD被引
1166
次
|
|
|
|
|
15.
Krajnovic. Optimization of Aerodynamic Properties of High-speed Trains With CFD and Response Surface Models.
Lecture Notes in Applied and Computational Mechanics,2009,41:197-211
|
CSCD被引
1
次
|
|
|
|
|
了解气象卫星更多信息，请访问