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工程力学  2012 

侧风环境下高速列车外部流场数值模拟方法研究

DOI: 10.6052/j.issn.1000-4750.2010.08.0578

Keywords: 高速列车,空气动力学,侧风,CFD,ICE2

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Abstract:

该文基于有限体积法的CFD软件以及块结构化和四面体非结构化网格,采用三维常物性定常不可压缩流动N-S方程的SIMPLE算法,利用国外典型模型试验数据对ICE2高速列车侧风环境下的空气绕流进行了数值模拟方法研究。结果表明:四面体非结构化和块结构化网格一样均能得到较好的结果,同时采用二次非线性高雷诺数k-ε模型和MARS差分格式的数值结果与试验数据吻合较好,从而验证了数值方法的正确性。在此基础上进行了四面体非结构化网格的独立性研究,得出适宜的网格总数和固壁法向第一层网格厚度合理的取值。该文确定的数值计算方法和四面体非结构化网格划分方法可用于复杂几何外形高速列车的数值模拟。

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