柔性运动侧线感知水下动态目标的耦合水动力场特性研究
The Underwater Dynamic Targets Coupled Hydrodynamic Field Characteristics of Flexible Motion Lateral Line Sensing
谢鸥 1孙兆光 1沈灿 1葛飞飞1
作者信息
- 1. 苏州科技大学机械工程学院,江苏 苏州 215009
- 折叠
摘要
为实现柔性运动侧线感知水下动态目标,研究了仿鱼人工侧线与水下运动目标耦合形成的水动力场特性.采用计算流体动力学方法建立仿生机器鱼原地摆动感知目标偶极子源的耦合求解模型,仿真分析偶极子源位置、直径、振动方向和频率对耦合水动力场的影响关系.建立仿生机器鱼自主推进感知目标偶极子源的仿真模型,研究不同振动频率偶极子源的感知定位特性.结果表明:仿生机器鱼原地摆动时压力传感器阵列采集的压力值与距离成反比,与偶极子源直径、最大振幅以及振动频率成正比;仿生机器鱼自主推进时,可通过压力信号的频谱图预测偶极子源振动频率和位置.
Abstract
In order to realize the perception of underwater dynamic targets by flexible moving lateral line,the hydrodynamic field characteristics formed by the coupling of fish-like artificial lateral line and underwater moving target were studied.The computational fluid dynamics method was used to establish a coupling solution model for the robot fish swinging in situ sensing the target dipole source,and the influence relationship of the dipole source position,diameter,vibration direction and frequency on the coupled hydrodynamic field was simulated and analyzed.Furthermore,a simulation model of the dipole source of the bionic robot fish for autonomous pro-pulsion of the sensing target was established,and the perceptual localization characteristics of the dipole source with different vibration frequencies were studied.The results showed that the pressure value acquired by the pressure sensor array when the robot fish swings in place was inversely proportional to the distance,and proportional to the di-pole source diameter,maximum amplitude and vibration frequency.In autonomous propulsion,the frequency and posi-tion of the dipole source vibration could be predicted from the spectrogram of the pressure signal.
关键词
柔性运动/人工侧线/偶极子源/耦合水动力场Key words
flexible motion/artificial lateral line/dipole source/coupled hydrodynamic fields引用本文复制引用
出版年
2024
NETL
NSTL
维普
万方数据