基于非光滑表面的高速列车转向架区域气动减阻性能
张渊，张继业，李田
（西南交通大学 牵引动力国家重点实验室，四川 成都 610031）
摘要：为了减小列车行进中的气动阻力，将仿生学中普遍应用的非光滑表面单元体布置于高速列车中间车的转向架区域端墙处。应用计算流体动力学的方法，对列车流场进行数值模拟，比较非光滑表面单元体（凹坑）对列车的气动减阻效果，与光滑列车的气动阻力相比，中间车减阻率可达1.05%。通过比较光滑模型和非光滑模型的压差阻力、黏性阻力的变化情况，得到了非光滑表面的减阻原理，为进一步研究车体非光滑表面气动减阻效果提供理论依据。
关键词：高速列车；气动阻力；仿生学；计算流体动力学；减阻
中图分类号：U292.91+4 文献标志码：A doi：10.3969/j.issn.1006-0316.2016.09.003
文章编号：1006－0316 (2016) 09－0012－04
Research on the Drag Reduction Characteristics of High-Speed Train with non-Smooth Surface
ZHANG Yuan，ZHANG Jiye，LI Tian
( State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu 610031, China )
Abstract：In order to reduce the aerodynamic drag of the train, the bionic non-smooth surfaces in general use in the unit cell arrangement in high-speed train car bogie area among end wall. A numerical simulation of the flow field in the train is made, and the reduction effect of the non-smooth surface unit cell (pit) on the train aerodynamic drag is compared using the computational fluid dynamics method. Results show that the non- smooth train aerodynamic drag is reduced by 1.05% compared to the smooth train aerodynamic drag. According to the comparison of the changes of the differential pressure resistance and viscous resistance between the smooth model and non-smooth model, the drag reduction principle of non-smooth surface is proposed, providing a theory basis to further study the body aerodynamic drag reduction effect of non-smooth surface.
Key words：high-speed train；aerodynamic drag；bionics；computational fluid dynamics；drag reduction
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收稿日期：2016－04－11
作者简介：张渊（1989－），男，陕西定边人，硕士，主要研究方向为高速列车空气动力学于计算流体力学。
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