基于粒子图像测速的二维仿水母扑翼涡动力学研究

王媛媛; 王成跃; 莽珊珊; 沈煜年; 陈志华

doi:10.11729/syltlx20230080

基于粒子图像测速的二维仿水母扑翼涡动力学研究

doi: 10.11729/syltlx20230080

1.
南京理工大学物理学院, 南京　210094

基金项目: 国家自然科学基金项目（12272183）

详细信息

作者简介:
王媛媛：（1999—），女，河北衡水人，硕士研究生。研究方向：实验流体力学。E-mail：3080708542@qq.com

通讯作者:
E-mail：wangchengyue@njust.edu.cn.

中图分类号: O351.3；O368
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- 文章访问数: 44
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- 被引次数: 0
出版历程
- 收稿日期: 2023-06-12
- 修回日期: 2023-10-19
- 录用日期: 2023-11-16
- 网络出版日期: 2024-03-04

Research on the vortex dynamics of two-dimensional jellyfish-like flapping wings based on particle image velocimetry

1.
School of Physics, Nanjing University of Science and Technology, Nanjing　210094

摘要

摘要: 仿水母扑翼飞行器是一种新型的微型飞行器构型，具有噪声小、灵活机动等特点。本文以定轴往复转动的一对二维平板作为仿水母扑翼的简化模型，采用时间解析的粒子图像测速技术测量了静水中二维扑翼的扰动流场。通过控制舵机改变扑翼拍动周期和拍动角度幅值，研究了扑翼运动参数对流场旋涡特性和演化规律的影响；采用相位平均和环量追踪技术，分析了旋涡生成、脱落及相互作用的演化过程；从涡动力学角度解释了推力形成机理。研究结果对仿水母扑翼飞行器设计具有一定参考意义。
- 仿生扑翼 /
- 二维平板 /
- 旋涡特性 /
- 粒子图像测速
Abstract: As a new type of micro aircraft configuration, the jellyfish-like flying aircraft has the advantages of low noise and flexible maneuvering, which has attracted the attention of the academic community. In this paper, a pair of two-dimensional plates rotating around fixed axes is used as a simplified model of jellyfish-like flapping wings. The disturbed flow fields in static water are measured by the time-resolved particle image velocimetry. By controlling the frequency and angular amplitude of the flapping motion, the influence of the motion parameters on the vortex characteristics and evolution law is studied. The vortex generation, shedding, and interaction processes are analyzed by using the phase average method and the circulation tracking technique. The forming mechanism of thrust is explained from the perspective of vortex dynamics. The experimental results provide certain references for the design of the jellyfish-like flying machines.
- bionic flapping wings /
- two-dimensional flat plate /
- vortex characteristics /
- particle image velocimetry

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图 1 实验装置示意图

Figure 1. Schematic diagram of the experimental setup

下载: 全尺寸图片幻灯片

图 2 扑翼横截面示意图

Figure 2. Schematic diagram of the cross-section of the flapping wings

下载: 全尺寸图片幻灯片

图 3 基准工况下的时均流场

Figure 3. The time-averaged flow field from the standard configuration

下载: 全尺寸图片幻灯片

图 4 不同工况下$ \stackrel{-}{v} $沿水平方向的变化

Figure 4. $ \stackrel{-}{v} $ varying along one horizontal line from different configurations

下载: 全尺寸图片幻灯片

图 5 基准工况的相位平均涡量云图与速度矢量图

Figure 5. Contour maps of the phase-averaged vorticity overlaid by velocity vectors from the standard configuration

下载: 全尺寸图片幻灯片

图 6 环量追踪结果

Figure 6. Circulation tracking results

下载: 全尺寸图片幻灯片

图 7 不同时间不对称系数下的旋涡运动轨迹

Figure 7. Vortex trajectories corresponding to different asymmetric coefficients

下载: 全尺寸图片幻灯片

图 8 不同拍动周期的旋涡运动轨迹

Figure 8. Vortex trajectories corresponding to different flapping periods

下载: 全尺寸图片幻灯片

图 9 不同拍动角度的旋涡运动轨迹

Figure 9. Vortex trajectories corresponding to different flapping angle amplitudes

下载: 全尺寸图片幻灯片

表 1 实验工况表

Table 1. The collection of parameters for different experimental configurations

工况序号	工况名称	雷诺数 Re	时间不对称系数R	运动周期 T/s	拍动角度 A/(°)	采样频率 f/Hz	记录时长中包含的扑翼拍动周期 × 组数
1	A90–T4–R2	2206	2.0	4	90	50	8 × 2
2	A90–T4–R1	2206	1.0	4	90	50	8 × 2
3	A90–T8–R2	1103	2.0	8	90	50	4 × 2
4	A60–T4–R2	3309	2.0	4	60	50	8 × 2
5	A90–T4–R0.5	2206	0.5	4	90	50	8 × 2
6	A90–T2–R2	4412	2.0	2	90	100	8 × 2

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