强风雨环境下高速列车空气动力学性能研究

doi:10.3901/JME.2020.04.185

机械工程学报 ›› 2020, Vol. 56 ›› Issue (4): 185-192.doi: 10.3901/JME.2020.04.185

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强风雨环境下高速列车空气动力学性能研究

于梦阁^1,2, 李海庆¹, 刘加利³, 李田⁴

1. 青岛大学机电工程学院青岛 266071;
2. 青岛大学自动化与电气工程学院系统科学博士后流动站青岛 266071;
3. 中车青岛四方机车车辆股份有限公司青岛 266111;
4. 西南交通大学牵引动力国家重点实验室成都 610031

收稿日期:2019-02-28 修回日期:2019-10-20 出版日期:2020-02-20 发布日期:2020-04-23
通讯作者: 于梦阁(通信作者),女,1985年出生,博士,副教授。主要研究方向为车辆空气动力学,车辆系统动力学。E-mail:yumengge0627@163.com
基金资助:
国家自然科学基金（51705267，51605397）和中国博士后科学基金（2018M630750）资助项目。

Study on the Aerodynamic Performance of the High-speed Train under Strong Wind and Rainfall Environment

YU Mengge^1,2, LI Haiqing¹, LIU Jiali³, LI Tian⁴

1. College of Mechanical and Electronic Engineering, Qingdao University, Qingdao 266071;
2. Postdoctoral Research Station of System Science, College of Automation and Electrical Engineering, Qingdao University, Qingdao 266071;
3. CRRC Qingdao Sifang Co., Ltd., Qingdao 266111;
4. State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu 610031

Received:2019-02-28 Revised:2019-10-20 Online:2020-02-20 Published:2020-04-23

摘要/Abstract

摘要： 为研究强风雨环境对高速列车空气动力学性能的影响，利用Lagrangian discrete phase model模拟雨滴在空气中的运动，并考虑空气与雨滴之间的相互作用，采用相间耦合方法实现强风雨环境模拟。通过开展强风环境下高速列车空气动力学计算及重力作用下的雨滴降落计算，验证计算模型的准确性。在此基础上，开展不同侧偏角、不同降雨强度条件下的高速列车风-雨两相流计算，研究强风雨环境下高速列车的流场特性及气动载荷特性。计算结果表明：当侧偏角相同时，随着降雨强度的增加，受雨滴撞击的影响，头车迎风侧的正压有所增大，头车背风侧的负压有所增大，列车横向气动性能恶化。强风雨环境下，气动载荷系数随着侧偏角和降雨强度的增加而增大，且近似与降雨强度成线性关系。当侧偏角相同时，气动载荷系数增加百分比随着降雨强度的增加而增大；当降雨强度相同时，气动载荷系数增加百分比随着侧偏角的增加而减小。强风雨环境下，高速列车气动载荷系数可以近似拟合为关于侧偏角和降雨强度的二次多项式，且降雨强度的二次项可以忽略不计。

关键词: 高速列车, 降雨强度, 气动性能, 离散相, 侧偏角

Abstract: In order to study the influence of the strong wind and rainfall environment on the aerodynamic performance of the high-speed train, the Lagrangian discrete phase model is used to simulate the movement of the raindrop in the air. The interaction between the air and raindrop is considered, and the phase-to-phase coupling method is used to simulate the strong wind and rainfall environment. Through performing the aerodynamic calculation of a high-speed train under strong wind and the raindrop landing calculation due to the gravity force, the accuracy of the computational model is verified. On this basis, the wind-rain two phase flow computation of the high-speed train under different yaw angles and rainfall intensities is carried out, and the flow field characteristics and aerodynamic characteristics of high-speed trains under strong wind and rainfall environment are studied. Computational results show that, for the same yaw angle, with the increase of the rainfall intensity, the positive pressure on the windward of the head car increases, and the negative pressure on the leeward of the head car increases due to the impact of the raindrops, leading to the deterioration of the lateral aerodynamic performance of the train. Under strong wind and rain conditions, the aerodynamic load coefficients increase with the increase of the yaw angle and rainfall intensity, and follow a linear relationship with the rainfall intensity. For the same yaw angle, the increased percent of the aerodynamic load coefficient increases with the increase of the rainfall intensity. For the same rainfall intensity, the increased percent of the aerodynamic load coefficient decreases with the increase of the yaw angle. The aerodynamic load coefficient of the train can be approximated as a quadratic polynomial with respect to the yaw angle and rainfall intensity, and the squared term of the rainfall intensity can be ignored.

Key words: high-speed train, rainfall intensity, aerodynamic performance, discrete phase, yaw angle

中图分类号:

U270

于梦阁, 李海庆, 刘加利, 李田. 强风雨环境下高速列车空气动力学性能研究[J]. 机械工程学报, 2020, 56(4): 185-192.

YU Mengge, LI Haiqing, LIU Jiali, LI Tian. Study on the Aerodynamic Performance of the High-speed Train under Strong Wind and Rainfall Environment[J]. Journal of Mechanical Engineering, 2020, 56(4): 185-192.

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强风雨环境下高速列车空气动力学性能研究

Study on the Aerodynamic Performance of the High-speed Train under Strong Wind and Rainfall Environment

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