高速列车气动噪声的计算研究

被引:14
作者
孙振旭 [1 ]
王一伟 [2 ]
安亦然 [1 ]
机构
[1] 北京大学工学院北京大学湍流与复杂系统研究国家重点实验室
[2] 中国科学院力学研究所
关键词
气动噪声; 计算气动声学; 非线性声学求解器; 大涡模拟;
D O I
暂无
中图分类号
U270.16 [];
学科分类号
080204 ; 082304 ;
摘要
通过对高速列车气动噪声产生的关键部位进行简化抽象,对其产生的噪声进行了数值分析。该文着重讨论了两个主要的简化模型,即二维后台阶问题以及三维圆柱绕流问题。对后台阶问题进行数值模拟时采用了NLAS和LES两种不同的方法,并同实验值进行了比较。对三维圆柱绕流问题则直接采用NLAS方法耦合FW-H声音传播方程进行了数值模拟。以此对高速列车气动噪声的机理进行了分析,并对适合于高速列车气动噪声计算的方法进行了选择。
引用
收藏
页码:660 / 668
页数:9
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