The invention discloses a high-speed train wake flow passive control method. The method comprises the following steps of finding out an area where flow separation occurs on the surface of a train tailthrough theoretical analysis or numerical simulation or a wind tunnel experiment method, arranging array pits on the flow separation area of the train tail to form a non-smooth surface, establishinga high-speed train CAD model under non-smooth surface parameters, using a CFD method for simulating a high-speed train wake flow area flow field, and finally determining the optimal non-smooth surfaceparameters of the pit. The method has the characteristics of improving the vortex structure of the tail of the train, slowing down the vortex motion of wake flow, reducing the differential pressure resistance of the whole train, improving the running stability of the train and the like, and has very deep theoretical guidance significance and practical popularization value.

    一种高速列车尾流被动控制方法,步骤如下:通过理论分析或数值模拟或风洞实验方法找出列车尾车表面发生流动分离的区域;在尾车的流动分离区域上设置阵列凹坑以形成非光滑表面;通过建立非光滑表面参数下的高速列车CAD模型,使用CFD方法模拟高速列车尾流区流场,最终确定上述凹坑的最优非光滑表面参数。本发明具有改善列车尾部涡旋结构,减缓尾流的涡旋运动,减小整车压差阻力,提升列车运行平稳性等特点,具有很深的理论指导意义和实用推广价值。


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    Titel :

    High-speed train wake flow passive control method


    Weitere Titelangaben:

    一种高速列车尾流被动控制方法


    Beteiligte:
    CHEN CHUNJUN (Autor:in) / WANG DONGWEI (Autor:in) / QU GUOQING (Autor:in)

    Erscheinungsdatum :

    2020-10-27


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    B61D Einzelheiten oder Arten des Wagenaufbaus von Eisenbahnfahrzeugen , BODY DETAILS OR KINDS OF RAILWAY VEHICLES



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