基于涡旋光束传输的水下航行器尾流流场探测

周志超; 唐云晴; 许凌飞; 顾村锋; 刘平安

doi:10.11993/j.issn.2096-3920.2024-0076

基于涡旋光束传输的水下航行器尾流流场探测

doi: 10.11993/j.issn.2096-3920.2024-0076

1.
上海机电工程研究所, 上海, 201109
2.
哈尔滨工程大学航天与建筑工程学院, 黑龙江哈尔滨, 150006

基金项目: 变结构宽速域UUV流体动力学特性及机理研究(3072022JC0201).

详细信息

作者简介:
刘平安 (1982-), 男, 博士, 教授, 主要研究方向为流体力学

中图分类号: TJ630, U368
计量
- 文章访问数: 28
- HTML全文浏览量: 20
- PDF下载量: 4
- 被引次数: 0
出版历程
- 收稿日期: 2024-05-08
- 修回日期: 2024-07-15
- 录用日期: 2024-07-24
- 网络出版日期: 2024-09-02

Wake Flow Field Detection of Underwater Vehicles Based on Vortex Beam Propagation

1.
Shanghai Electro-Mechanical Engineering Institute, Shanghai 201109, China
2.
College of Aerospace and Civil Engineering, Harbin Engineering University, Harbin 150006, China

摘要

摘要: 涡旋光场轨道角动量(OAM)在自由空间衍射中是保持不变的, 而在湍流层中由于流场内部存在拟序结构, 导致OAM谱分布对称性破缺现象, 且OAM也会发生改变。文中研究了基于OAM谱分布对称性破缺效应对流场流动结构进行探测的机理, 初步分析了将涡旋光场OAM应用于水下航行器探测的可行性并给出相关试验的结果。此外, 根据光场总OAM也会发生改变的特性, 结合交叉OAM矩阵法, 阐述了基于OAM对不同流场特征进行辨识的理论依据。最后, 文中研究了涡旋光场对水介质感知特性, 结合数值仿真结果, 提出了一个基于OAM传输特性探测水下航行器的技术构想。
- 涡旋光束 /
- 轨道角动量 /
- 水下航行器 /
- 交叉OAM矩阵法
Abstract: In free-space diffraction, the orbital angular momentum (OAM) of vortex field remains unchanged. However, in turbulent boundary layer, the symmetry of OAM spectrum distribution will be broken and the total OAM of the field will also change due to the existence of quasi-ordered structure in the flow field. In this paper, the mechanism of detecting the flow structure by using the symmetry breaking of OAM spectrum distribution was investigated. The feasibility of the detection of the wake flow field caused by underwater vehicles and the flow field caused by human activity in the atmosphere was preliminarily elaborated. In addition, according to the characteristics that the total OAM of the light field also changes, combined with the cross OAM matrix method, the theoretical basis for identifying the characteristics of different flow fields was elaborated. Lastly, the perception characteristics of the water medium of the vortex light field was studied, combined with the results of numerical simulation, a technical concept for detecting the underwater vehicles based on the characteristics of OAM propagation in the ocean is proposed.
- vortex beam /
- orbital angular momentum /
- underwater vehicle /
- cross-OAM matrix

HTML全文

图 1 OAM谱分布图像

注: (左图为无模型流场光束传输OAM谱(角量子数为$ \pm 3 $)分布图像; 右图为流场稳定状态谱分布图像)

Figure 1. OAM spectral distribution image

下载: 全尺寸图片幻灯片

图 2 水槽模拟试验现场俯视图

Figure 2. Top view of the simulation test site for the water tank

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图 3 水槽模拟实验结果

注: (上图为初始OAM谱(角量子数为±3)分布图像; 下图为水泵启动后OAM谱图像)

Figure 3. Sink simulation experiment results

下载: 全尺寸图片幻灯片

图 4 基于Rayleigh–Bénard湍流的数值仿真结果^[13]

Figure 4. Numerical simulation results based on Rayleigh–Bénard turbulence^[13]

下载: 全尺寸图片幻灯片

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