| 风向角对CRH2列车气动特性的影响研究 |
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| 引用本文： | 何旭辉,左太辉,邹云峰,赖慧蕊,肖飞. 风向角对CRH2列车气动特性的影响研究[J]. 铁道科学与工程学报, 2021, 18(2): 277-286. DOI: 10.19713/j.cnki.43-1423/u.T20200452 |
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| 作者姓名： | 何旭辉 左太辉 邹云峰 赖慧蕊 肖飞 |
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| 作者单位： | 中南大学土木工程学院,湖南长沙 410075;高速铁路建造技术国家工程实验室,湖南长沙 410075;中南大学土木工程学院,湖南长沙 410075;高速铁路建造技术国家工程实验室,湖南长沙 410075;中南大学土木工程学院,湖南长沙 410075;高速铁路建造技术国家工程实验室,湖南长沙 410075;武汉经济技术开发区(汉南区) 住房和城乡建设局,湖北武汉 430056;中国铁路广州局集团有限公司工程质量监督站,广东广州 510030 |
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| 基金项目： | 国家自然科学基金"杰青"资助项目;国家重点研发计划资助项目(2017YFB1201204子课题) |
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| 摘 要： | 为研究不同风向角下高速铁路列车气动力特性,分析流线型列车周围流场结构差异对列车气动力影响,以高速铁路典型CRH2列车为研究背景,采用风洞试验和数值模拟相结合的研究手段对不同工况下列车气动力和流场结构进行分析.研究结果表明:测压和测力试验结果具有很好的一致性,数值模拟与风洞试验结果吻合良好,可用来分析风向角对列车气动特性...
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| 关 键 词： | CRH2型列车 风向角 风洞试验 数值模拟 气动特性 |
Numerical simulation on the influence of wind direction angle on CRH2 train aerodynamic characteristics |
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| HE Xuhui,ZUO Taihui,ZOU Yunfeng,LAI Huirui,XIAO Fei. Numerical simulation on the influence of wind direction angle on CRH2 train aerodynamic characteristics[J]. Journal of Railway Science and Engineering, 2021, 18(2): 277-286. DOI: 10.19713/j.cnki.43-1423/u.T20200452 |
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| Authors: | HE Xuhui ZUO Taihui ZOU Yunfeng LAI Huirui XIAO Fei |
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| Affiliation: | (School of Civil Engineering,Central South University,Changsha 410075,China;National Engineering Laboratory for High Speed Railway Construction,Changsha 410075,China;Housing and Urban-rural Construction Bureau of Wuhan Economic and Technological Development Zone(Hannan District),Wuhan 430056,China;Engineering Quality Supervision Station of China Railway Guangzhou Bureau Group Co.,Ltd.,Guangzhou 510030,China) |
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| Abstract: | The flow structure of a streamlined train changes with wind angles,and the aerodynamic characteristics of train are greatly affected.Pressure tests were carried out in wind tunnel to analyze the surface wind pressure and aerodynamic characteristics of CRH2 train model,and the results were compared with the force measurement results.The results show that the numerical simulation were at good agreement with the wind tunnel test results,and it can be used to analyze the influence of the wind direction angle on the aerodynamic characteristics of the train.The distribution of wind pressure and the change law of aerodynamic force of head car and the middle car were significantly different.The side force coefficient and lift coefficient of the head car increase at first and then decrease as the increase of wind direction angle,and it reaches maximum when wind direction angle is 60°,while the distribution of wind pressure and the change law of aerodynamic force of the middle car increase all the time.It shows that the flow field features three-dimensional spatial characteristics,the wind pressure coefficients and aerodynamic force coefficients of the first and the second vehicle appear different change rules with different wind exposures;the flow field around the train was form of streamline structure around angle of wind less than 60°,a transition from streamline to bluff body behavior occured when angle of wind more than 60°. |
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| Keywords: | CRH2 wind angle wind tunnel test numerical simulation aerodynamic characteristic |
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