Add to ORKG采用真实的列车模型对横风作用下气动阻力进行数值模拟,对不同列车速度、不同横风风速及横风风向角下列车阻力的变化规律、列车各部件的阻力构成及分布进行研究,并利用量纲分析π定理,提出列车的阻力系数与风速、风向角及车速之间的综合表达式。研究结果表明:阻力系数与风速、风向角和列车车速分别呈三次函数关系;压差阻力为总阻力的主要部分,其所占比例为75%~85%,远大于黏性摩擦阻力所占比例
Significant variation exists in the aerodynamic performances of high-speed trains (HSTs) traveling i...
Usled trenda povećanja brzina i smanjenja mase modernih vozova velikih brzina neophodno je razmatrat...
In this work, initially the effect of nose shape on the drag characteristics of a high speed train i...
针对CRH型动车组的真实外形,采用分离涡数值计算方法,对横风中高速列车转向架的非定常空气动力特性进行研究。得到各个转向架气动荷载的时域特性、频域特性以及转向架周围非定常流动结构。研究结果表明,横风中高...
针对由8辆车组成的CRH3型动车组的实际外形,生成约1.6亿个计算网格,采用大规模并行计算,模拟单列高速列车在明线轨道上以350km/h速度运行时的气流流场,并对列车各组成部分的气动阻力特性进行统计和...
横风作用下的列车安全运行速度限值应通过列车气动特性和车辆轨道动力学特性的分析得到。以我国CRH3型高速列车实车为原型,考虑真实受电弓、转向架等列车的细部特征,假定列车在平地上行驶,对列车速度分别为20...
通过对高速列车气动噪声产生的关键部位进行简化抽象,对其产生的噪声进行了数值分析.该文着重讨论了两个主要的简化模型,即二维后台阶问题以及三维圆柱绕流问题.对后台阶问题进行数值模拟时采用了NLAS和LES...
The aerodynamics problems of train commonly come when the flow pass through train body. The increasi...
Characteristic of cross wind field, such as uniform wind and lower atmospheric boundary layer wind, ...
The focus of this study was the influence of the length of a train on its aerodynamic performance, w...
The effect of the relative motion between a train and the surrounding infrastructure may result in c...
A numerical simulation of the aerodynamic behavior of high-speed trains under synthetic crosswinds a...
In this article, simulations of crosswinds over a rectangular prism with two types of train nose sha...
The correct definition of the crosswind aerodynamic forces on a high speed train is important to jud...
基于欧拉双流体模型,运用商用CFD软件FLUENT,对挟雨风条件下高速列车的气动特性和运行稳定性进行了三维模拟研究.分析了不同横摆角和暴雨强度下气动力和倾覆力矩的变化特征,并与无降雨条件下的相应结果进...
Significant variation exists in the aerodynamic performances of high-speed trains (HSTs) traveling i...
Usled trenda povećanja brzina i smanjenja mase modernih vozova velikih brzina neophodno je razmatrat...
In this work, initially the effect of nose shape on the drag characteristics of a high speed train i...
针对CRH型动车组的真实外形,采用分离涡数值计算方法,对横风中高速列车转向架的非定常空气动力特性进行研究。得到各个转向架气动荷载的时域特性、频域特性以及转向架周围非定常流动结构。研究结果表明,横风中高...
针对由8辆车组成的CRH3型动车组的实际外形,生成约1.6亿个计算网格,采用大规模并行计算,模拟单列高速列车在明线轨道上以350km/h速度运行时的气流流场,并对列车各组成部分的气动阻力特性进行统计和...
横风作用下的列车安全运行速度限值应通过列车气动特性和车辆轨道动力学特性的分析得到。以我国CRH3型高速列车实车为原型,考虑真实受电弓、转向架等列车的细部特征,假定列车在平地上行驶,对列车速度分别为20...
通过对高速列车气动噪声产生的关键部位进行简化抽象,对其产生的噪声进行了数值分析.该文着重讨论了两个主要的简化模型,即二维后台阶问题以及三维圆柱绕流问题.对后台阶问题进行数值模拟时采用了NLAS和LES...
The aerodynamics problems of train commonly come when the flow pass through train body. The increasi...
Characteristic of cross wind field, such as uniform wind and lower atmospheric boundary layer wind, ...
The focus of this study was the influence of the length of a train on its aerodynamic performance, w...
The effect of the relative motion between a train and the surrounding infrastructure may result in c...
A numerical simulation of the aerodynamic behavior of high-speed trains under synthetic crosswinds a...
In this article, simulations of crosswinds over a rectangular prism with two types of train nose sha...
The correct definition of the crosswind aerodynamic forces on a high speed train is important to jud...
基于欧拉双流体模型,运用商用CFD软件FLUENT,对挟雨风条件下高速列车的气动特性和运行稳定性进行了三维模拟研究.分析了不同横摆角和暴雨强度下气动力和倾覆力矩的变化特征,并与无降雨条件下的相应结果进...
Significant variation exists in the aerodynamic performances of high-speed trains (HSTs) traveling i...
Usled trenda povećanja brzina i smanjenja mase modernih vozova velikih brzina neophodno je razmatrat...
In this work, initially the effect of nose shape on the drag characteristics of a high speed train i...