Drag Reduction Characteristics of Bionic Non-smooth Surface for Underwater Vehicle

被引：0
|
作者：
Tang J. [1 ]
Liu Y. [1 ]
Yan Y. [1 ]
机构：
[1] School of Civil Engineering, Tianjin University, Tianjin
来源：
Binggong Xuebao/Acta Armamentarii | 2022年 / 43卷 / 05期
关键词：
Bionic non-smooth surface; Drag reduction; Killer whale; SUBOFF submarine; Underwater vehicle;
D O I：
10.12382/bgxb.2021.0204
中图分类号：
学科分类号：
摘要：
In order to save energy and build high-performance vehicles, a new bionic non-smooth surface that can significantly reduce the drag of underwater vehicle is proposed based on the skin structure of killer whale. The drag reduction characteristics of non-smooth surface with different parameters are obtained through numerical simulation, and the influence of bionic non-smooth surface on near-wall flowfield and turbulence intensity is discussed. The results show that the bionic non-smooth surface can increase the turbulent boundary layer thickness in a wide range of velocities, and reduce the turbulence intensity and skin friction. In the range from 0.5 m/s to 15 m/s, the skin friction of plate with the bionic non-smooth surface is reduced by more than 9%, with a maximum total drag reduction ratio of 7.57%. By applying the bionic non-smooth surface to the SUBOFF submarine model, the maximum total drag reduction ratio of submarine achieves 11.31%. The new bionic non-smooth surface has a wide range of application, which can effectively reduce the total drag of underwater vehicles and has good prospects for engineering applications. © 2022, Editorial Board of Acta Armamentarii. All right reserved.
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页码：1135 / 1143
页数：8
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