RT journal article
T1 Numerical Investigation of Dimensionless Parameters in Carangiform Fish Swimming Hydrodynamics
A1 Machuca Macías, Marianela
A1 García Ortiz, José Hermenegildo
A1 Oliveira, T.F.
A1 Brasil Junior, A C P
A2 Ingeniería Mecánica y Diseño Industrial
K1 swimming fish
K1 quasi-propulsive efficiency
K1 Reynolds number
K1 Strouhal number
K1 slip number
K1 leading-edge vortex
K1 wake vortex
K1 CFD
K1 biomimetics
AB Research into how fish and other aquatic organisms propel themselves offers valuable natural references for enhancing technology related to underwater devices like vehicles, propellers, and biomimetic robotics. Additionally, such research provides insights into fish evolution and ecological dynamics. This work carried out a numerical investigation of the most relevant dimensionless parameters in a fish swimming environment (Reynolds (Formula presented.), Strouhal (Formula presented.), and (Formula presented.) numbers) to provide valuable knowledge in terms of biomechanics behavior. Thus, a three-dimensional numerical study of the fish-like lambari, a BCF swimmer with carangiform kinematics, was conducted using the URANS approach with the k- (Formula presented.) -SST transition turbulence closure model in the OpenFOAM software. In this study, we initially reported the equilibrium Strouhal number, which is represented by (Formula presented.), and its dependence on the Reynolds number, denoted as (Formula presented.). This was performed following a power–law relationship of (Formula presented.). We also conducted a comprehensive analysis of the hydrodynamic forces and the effect of body undulation in fish on the production of swimming drag and thrust. Additionally, we computed propulsive and quasi-propulsive efficiencies, as well as examined the influence of the Reynolds number and (Formula presented.) number on fish performance. Finally, we performed a vortex dynamics analysis, in which different wake configurations were revealed under variations of the dimensionless parameters (Formula presented.), (Formula presented.), and (Formula presented.). Furthermore, we explored the relationship between the generation of a leading-edge vortex via the caudal fin and the peak thrust production within the motion cycle.
PB MDPI
SN 2313-7673
YR 2024
FD 2024
LK http://hdl.handle.net/10498/32647
UL http://hdl.handle.net/10498/32647
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 08-nov-2026