水下航行器仿生非光滑表面减阻特性

doi:10.12382/bgxb.2021.0204

摘要/Abstract

摘要： 为节约能源和制造高性能的航行器，基于虎鲸皮肤结构设计一种可显著降低水下航行器阻力的新型仿生非光滑表面。通过数值模拟评估不同形状参数下非光滑表面的减阻性能，讨论仿生非光滑表面对近壁面流场和湍流强度的影响。结果表明：仿生非光滑表面在较大速度范围可以增加湍流边界层厚度，降低流场湍流强度，减少表面摩擦阻力；在0.5~15 m/s速度范围内，应用仿生非光滑表面的平板摩擦阻力减少9%以上，最大总阻力减阻率达到7.57%；将该仿生非光滑表面应用于无附体SUBOFF潜艇模型表面进行减阻优化设计，潜艇最大总阻力减阻率达到11.31%；新型仿生非光滑表面适用范围较广，可有效降低水下航行器的总阻力，具有良好的工程应用前景。

关键词: 水下航行器, 仿生非光滑表面, 虎鲸, SUBOFF潜艇, 减阻

Abstract: 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.

Key words: underwatervehicle, bionicnon-smoothsurface, killerwhale, SUBOFFsubmarine, dragreduction

中图分类号:

TB17
E925.66

唐俊，刘岩岩，闫一天. 水下航行器仿生非光滑表面减阻特性[J]. 兵工学报, 2022, 43(5): 1135-1143.

TANG Jun， LIU Yanyan， YAN Yitian. Drag Reduction Characteristics of Bionic Non-smooth Surface for Underwater Vehicle[J]. Acta Armamentarii, 2022, 43(5): 1135-1143.

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