According to the micro-groove bionic anti-drag structure and the preparation method thereof, turbulent flow of fluid flowing can be effectively limited at the junctions of the adjacent anti-drag edges, the energy exchange process between the fluid and the first groove inclined face and the energy exchange process between the fluid and the second groove inclined face are restrained, and the anti-drag edges can achieve the good anti-drag performance. The microstructure with the spherical crown structure is formed by improving a typical V-shaped groove and is similar to a triangular groove structure on the surface of shark skin. Due to the fact that the resistance reduction structure is applied to micro-bubble and micro-groove composite resistance reduction, the optimized structure can improve the content of bubbles on the first groove inclined face and the second groove inclined face, speed stable areas of the first groove inclined face and the second groove inclined face are added, and the water flow speed is stable in the areas. The spherical crown structures are additionally arranged on the traditional first groove inclined surface and the second groove inclined surface, so that the resistance is reduced, the speed is stabilized, the shearing force on the two sides of each spherical crown structure is further reduced, and the area range of the spherical crown structures is obviously enlarged compared with that of an original structure.

    本发明公开一种微沟槽仿生减阻结构及其制备方法,相邻减阻棱的交界处能有效限制流体流动的湍流,抑制流体分别与第一沟槽斜面、第二沟槽斜面之间的能量交换过程,减阻棱能达到良好的减阻性能。这种带有球冠结构的微结构是由典型的V形凹槽改进而来的,类似于鲨鱼皮肤表面的三角形凹槽结构。因为此减阻结构应用在微气泡与微沟槽复合减阻中,优化后的结构可以提高气泡在第一沟槽斜面、第二沟槽斜面的含量,并增加第一沟槽斜面、第二沟槽斜面的速度稳定区域,水流速度在此区域较为稳定。在传统的第一沟槽斜面、第二沟槽斜面增加球冠结构有利于阻力的降低,有利于速度的稳定,在球冠结构的两侧剪切力进一步降低,其区域范围较原始结构有明显的增大。


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    Titel :

    Micro-groove bionic drag reduction structure and preparation method thereof


    Weitere Titelangaben:

    一种微沟槽仿生减阻结构及其制备方法


    Beteiligte:
    JIA WENGUANG (Autor:in) / ZHAO CHAO (Autor:in) / LI GUODONG (Autor:in) / GUO XIAOYUN (Autor:in) / LYU MINGLI (Autor:in)

    Erscheinungsdatum :

    2022-11-01


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS / C09D Überzugsmittel, z.B. Anstrichstoffe, Firnisse oder Lacke , COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS



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