基于STAR-CCM+的高速列车空气动力学性能数值分析

摘要

A preliminary induction and summary for analysis and application process of CFD, and reference recommendations for the head design are presented. Using software of STAR-CCM + , the general description of process calculation and the results of external flow field for a high-speed train is given, and the aerodynamic performance of the train in the condition of open wire is studied in the aspects of drag coefficient, velocity and pressure field. Simulation shows that the total resistance of the train is mainly from suffered pressure drag and the pressure value, and the maximum appears in nasal tip, gradually decrease along the transition zone.%应用STAR-CCM+软件对某高速列车外流场CFD计算过程与结果做了通用性的描述,并从阻力系数、速度场和压力场几个方面对列车在明线运行工况下的空气动力性能进行了研究.通过仿真分析表明,列车的总阻力主要来源于列车受到的压差阻力,且鼻端处压力值最大并沿着过渡区域逐渐降低.对列车CFD分析应用流程做了初步的归纳与总结,并对列车头型设计提出参考性的建议.