The invention relates to a method for reducing wall surface cavitation by regulating and controlling cavitation jet flow through filaments. A filament array is arranged on a to-be-protected wall surface under a water body, the filament array does not damage a wall surface structure, after parallel filaments are immersed in the water body, cavitation bubbles appear in the middle of the parallel filament array, due to asymmetry of parameters such as pressure intensity of the two sides, close to the wall surface and away from the wall surface, of the bubbles, jet flow pointing to the filaments is generated after the bubbles are collapsed, the existence of the filament array can induce the generation of a plurality of jet flows at the same time, the jet flow intensity of the cavitation bubbles can be effectively controlled by changing the distance and the diameter of the filaments under the same maximum radius of the cavitation bubbles, the jet flow number of the cavitation bubbles can be effectively controlled by changing the number of the filaments under the same radius and distance of the filaments, and thus the number of jet flows is increased along with the increase of the number of the filaments, and the jet flow intensity is reduced. According to the invention, the used filaments are better in reliability and smaller in stress area, and the jet flow impact force borne by the filaments is smaller while the jet flow direction and strength can be stably regulated and controlled.

    本发明涉及一种利用细丝调控空泡射流消减壁面汽蚀的方法。本发明在水体下的待保护壁面上,布置细丝阵列,细丝阵列并不破坏壁面结构,当水体浸没平行细丝后,在相互平行细丝阵列中间出现的空化气泡,由于气泡靠近壁面和远离壁面两侧压强等参数的不对称,气泡在溃灭后产生指向细丝的射流,细丝阵列的存在会同时诱导多个射流的产生,在同等空化气泡最大半径,通过改变细丝间距和丝径,可以有效控制空化气泡射流强度,同等细丝半径和间距下,改变细丝数量可以有效控制空化气泡射流个数,使得射流个数随细丝数量增加而增加,同时降低射流强度。本发明利用的细丝可靠性更好,受力面积更小,能够稳定调控射流方向和强度的同时本身受到的射流冲击力更小。


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    Title :

    Method for reducing wall surface cavitation by regulating and controlling cavitation jet flow through filaments


    Additional title:

    一种利用细丝调控空泡射流消减壁面汽蚀的方法


    Contributors:
    CHEN JIE (author) / BAO FUBING (author) / TU CHENGXU (author) / GAO XIAOYAN (author)

    Publication date :

    2021-10-19


    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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