Study on Near-body Pressure Characteristics of Bionic Robotic Fish Undulating in Near Wall Region

doi:10.16182/j.issn1004731x.joss.20-0929

Abstract

Abstract:

To accommodate the dark and unstructured underwater working environment, the near-body pressure distribution characteristics of a bionic robot fish undulating in near wall region is studied. The feasibility of using artificial lateral line(ALL) to estimate the wall effect and flow field parameters is analyzed theoretically. A CFD(computational fluid dynamics) coupled solution model for near-body pressure simulation of a bionic robotic fish swimming near the wall is established and a near-body pressure data extraction and processing method is proposed. The effect of the wall clearance, inlet flow velocity and strouhal number (St) on the fish near-body pressure distribution is analyzed. The results show that the wall effect and inlet flow velocity can be characterized by near-body pressure distribution, which provides a reference for the flow field identification and parameter prediction in the unstructured underwater environment.

Key words: bionic robot fish, artificial lateral line(ALL), computational fluid dynamics(CFD), wall effect, near-body pressure distribution

CLC Number:

TP242

Ou Xie, Aiguo Song, Qixin Zhu. Study on Near-body Pressure Characteristics of Bionic Robotic Fish Undulating in Near Wall Region[J]. Journal of System Simulation, 2022, 34(4): 870-877.

Figures/Tables 9

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参数	数值
靠壁距离d	0.2L、 0.3L、 0.4L、 0.6L、 0.8L、 ∞
来流速度/(m/s)	0、 0.2、 0.5、 0.8、 1.0
St	0.1、 0.2、 0.25、 0.32、 0.4、 0.5

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