The invention provides a fluid drag reduction structure imitating a surface structure of a kiss shark. The invention relates to the field of engineering bionics, and is derived from a skeletal structure which covers the surface of sharkskin and is similar to teeth or scales, the upper part of the skeletal structure is smooth and flat, ridge-shaped bulges are arranged on two sides, and the lower part of the skeletal structure is shrunk into a neck shape. The small tooth structure is simplified into the following forms: a flow guide head arc, a flow guide middle ridge, a flow guide side ridge, a vertical transition groove, an axial transition groove and a connecting bottom plate. Aiming at the microstructure model, the structure distribution characteristics of the shark skin are combined, the microstructures are arranged on the NACA0020 wing model in different modes, and a series of simulation comparison is carried out with an existing traditional drag reduction structure. Compared with a traditional drag reduction structure, the drag reduction effect is better. In addition, a reasonable microstructure arrangement mode is further obtained for improving the actual application effect, so that a series of actual application purposes of saving fuel, improving the voyage and the speed and the like of the aircraft are achieved.

    本发明提供一种仿尖吻鲭鲨表面结构的流体减阻结构。本发明涉及工程仿生领域,来源于鲨鱼皮表面覆盖的类似于牙齿或是鳞片的骨骼结构,这些结构上方光滑平整,两边有脊状的突起,下方收缩成颈状。本发明将该小齿结构简化为如下形式:导流头弧、导流中脊、导流侧脊、垂向过渡凹槽、轴向过渡凹槽和连接底板。本发明针对上述微结构模型,结合鲨鱼表皮的结构分布特点,将微结构以不同的方式排列在NACA0020机翼模型上,并与现有传统减阻结构进行了一系列仿真对比。本发明相比传统减阻结构,减阻效果更优。除此以外,本发明为提高实际应用效果还得出了一种较为合理的微结构排列方式,以达到航行器节约燃料、提高航程和速度等一系列实际应用目的。


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    Title :

    Fluid drag reduction structure imitating surface structure of kiss shark


    Additional title:

    一种仿尖吻鲭鲨表面结构的流体减阻结构


    Contributors:
    LU YU (author) / SHAO WU (author) / GU ZHUHAO (author) / WU CHUNXIAO (author) / LI CHUANG (author)

    Publication date :

    2022-11-22


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS



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