Vortex dynamics and hydrodynamic performance enhancement mechanism in batoid fish oscillatory swimming

• Published in: Journal of fluid mechanics Vol. 930
• Main Authors: Zhang, Dong, Huang, Qiao-Gao, Pan, Guang, Yang, Li-Ming, Huang, Wei-Xi
• Format: Journal Article
• Language: English
• Published: Cambridge, UK Cambridge University Press 10.01.2022
• Subjects: Amplitude; Amplitudes; Angle of attack; Biological data; Deformation; Deformation effects; Dynamics; Fins; Fish; Hydrodynamics; Investigations; JFM Papers; Kinematics; Numerical analysis; Performance enhancement; Pressure distribution; Reynolds number; Swimming; Thrust; Vortices; Wavelengths; propulsion; swimming/flying; vortex dynamics

The effects of chordwise deformation and the half-amplitude asymmetry on the hydrodynamic performance and vortex dynamics of batoid fish have been numerically investigated, in which the two parameters were represented by the wavenumber ($W$) and the ratio of the half-amplitude above the longitudinal...