高速列车头形的设计几何学方法与气动仿真分析

Geometry method and aerodynamic simulation analysis of shape design of high-speed train head

面向国内高速列车外形设计方案推演过程中家族化语言延续性不足,美学性与实用性不匹配,设计概念与设计实施相脱节等问题,运用设计几何学理论中黄金矩形及黄金分割比的设计方法对国内高速列车头形案例进行分析,寻找造型设计的几何比例规律,总结列车头形设计的几何设计框架,形成高速列车头形衍生化方案。运用计算流体力学(CFD)方法对生成的头形方案进行基本气动性能比较分析,总结列车头形设计变化与列车头部表面阻力的参考关系。通过设计几何学方法与计算机仿真技术,将设计方案的美学延续性与气动性能指标相结合,拓展列车系列头形设计方法的研究广度,提升设计质量。

Facing the issues of insufficient continuity of family language in the deduction process of domestic high-speed train shape design schemes,mismatch between aesthetics and practicality,and disconnection between design concept and design implementation,the golden rectangle and golden ratio method of design geometry theory were used to perform case analysis of domestic high-speed train head shapes. The geometric proportion law of the shape design has been looking for to sum up the geometric design framework of train head shape design. A derived high-speed train head shape scheme was formed. Computational fluid dynamics (CFD) method was used to compare and analyze basic aerodynamic performance of the generated head shape scheme. The reference relationships between variations of train head shape design and surface resistance of train head were summarized. The aesthetic continually of the design scheme method and computer simulation technology,combining the aesthetic continuity of the design scheme with aerodynamic performance indicators,expanding the research breadth of the design method of train series head shape and improving the design quality.