The invention relates to the field of aerospace, in particular to an asymmetric groove liquid film directional splashing pneumatic structure. The asymmetric groove liquid film directional splashing pneumatic structure comprises a skin, an asymmetric groove is formed in the surface of the skin in the wingspan direction, the profile depth k of the asymmetric groove is smaller than delta/50, and meanwhile the dimensionless internal dimension roughness height k + lt; 10; wherein k + = kVtau/V, Vtau is the wall shearing speed, V is the flight speed, and delta is the thickness of the boundary layer. According to the pneumatic structure for directional splashing of the liquid film with the asymmetric grooves, the asymmetric grooves are formed in the surface of the skin in the wingspan direction, and when the section depth k of the asymmetric grooves is smaller than delta/50, the non-dimensional internal dimension roughness height is k + lt; 10, under the condition that the pneumatic performance of the surface is not affected, liquid drops can be promoted to splash towards the downstream and away from the wall surface, then the liquid film flow of the pneumatic surface is reduced, and the good effect of preventing overflow ice is achieved.

    本发明涉及航空航天领域,尤其是涉及一种非对称凹槽液膜定向飞溅气动结构。非对称凹槽液膜定向飞溅气动结构,包括蒙皮,在该蒙皮表面上沿翼展方向设置有非对称凹槽,该非对称凹槽的剖面深度k<δ/50,同时无量纲内尺度粗糙高度k+<10;其中k+=kVτ/V,Vτ为壁面剪切速度,V为飞行速度,δ为边界层厚度。本发明的非对称凹槽液膜定向飞溅气动结构,在蒙皮表面上沿翼展方向设置有非对称凹槽,当非对称凹槽的剖面深度k<δ/50,同时无量纲内尺度粗糙高度k+<10时,可以在不影响表面气动性能的情况下,促进液滴向下游、远离壁面方向飞溅,进而减少气动面液膜流量,起到较好的防溢流冰的效果。


    Access

    Download


    Export, share and cite



    Title :

    Asymmetric groove liquid film directional splashing pneumatic structure


    Additional title:

    非对称凹槽液膜定向飞溅气动结构


    Contributors:
    HU ZHANWEI (author) / LIU QINGLIN (author) / LI MING (author) / DENG GUANGZHOU (author) / XIONG HAO (author) / LI WEIHAO (author)

    Publication date :

    2022-07-22


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B64C AEROPLANES , Flugzeuge / B64D Ausrüstung für Flugzeuge , EQUIPMENT FOR FITTING IN OR TO AIRCRAFT



    Pneumatic tire with improved groove structure

    European Patent Office | 2019

    Free access

    Pneumatic tire with improved groove structure

    PARK CHANG JUNG | European Patent Office | 2019

    Free access

    PNEUMATIC TIRE WITH GROOVE

    GURUMOORTHY VIJAI KARTHIK / SREEKUMARI SARAJ VIJAYAKUMARAN NAIR | European Patent Office | 2024

    Free access

    Pneumatic tire having a raindrop-shaped groove structure

    European Patent Office | 2023

    Free access

    SPLASHING PREVENTION DEVICE

    SHIOTANI KAZUHIRO / IGAMI NORIMITSU / MURAKAMI KOSUKE | European Patent Office | 2018

    Free access