Hydrodynamics of pitching hydrofoil in a plane Poiseuille flow
Several advanced medical and engineering tasks, such as microsurgery, drug delivery
through arteries, pipe inspection, and sewage cleaning, can be more efficiently handled …
through arteries, pipe inspection, and sewage cleaning, can be more efficiently handled …
Scaling laws for the propulsive performance of a purely pitching foil in ground effect
Scaling laws for the thrust production and power consumption of a purely pitching hydrofoil
in ground effect are presented. For the first time, ground-effect scaling laws based on …
in ground effect are presented. For the first time, ground-effect scaling laws based on …
Amplitude of undulating fin in the vicinity of a wall: Influence of unsteady wall effect on marine propulsion
K Ren, J Yu - Ocean Engineering, 2022 - Elsevier
To investigate the role of the amplitude of an object under the unsteady wall effect in fluid
dynamics, we modelled an undulating fin near a wall in a two-dimensional Cartesian …
dynamics, we modelled an undulating fin near a wall in a two-dimensional Cartesian …
The ground effect in anguilliform swimming
Some anguilliform swimmers such as eels and lampreys swim near the ground, which has
been hypothesized to have hydrodynamic benefits. To investigate whether swimming near …
been hypothesized to have hydrodynamic benefits. To investigate whether swimming near …
Energy conservation by collective movement in schooling fish
Many animals moving through fluids exhibit highly coordinated group movement that is
thought to reduce the cost of locomotion. However, direct energetic measurements …
thought to reduce the cost of locomotion. However, direct energetic measurements …
Aspect ratio affects the equilibrium altitude of near-ground swimmers
Animals and bio-inspired robots can swim/fly faster near solid surfaces, with little to no loss
in efficiency. How these benefits change with propulsor aspect ratio is unknown. Here we …
in efficiency. How these benefits change with propulsor aspect ratio is unknown. Here we …
Revealing the mechanism and scaling laws behind equilibrium altitudes of near-ground pitching hydrofoils
A classic lift decomposition (Von Kármán & Sears, J. Aeronaut. Sci., vol. 5, 1938, pp. 379–
390) is conducted on potential flow simulations of a near-ground pitching hydrofoil. It is …
390) is conducted on potential flow simulations of a near-ground pitching hydrofoil. It is …
Flow-mediated interactions between two self-propelled flexible fins near sidewalls
It has been reported that the follower in a tandem configuration with no wall (0W) reduces
the time-averaged input power by utilizing the vortex interception mode (Zhu et al., Phys …
the time-averaged input power by utilizing the vortex interception mode (Zhu et al., Phys …
Instability mechanisms of symmetry breaking in the wakes of two anti-phase pitching foils at zero free-stream velocity
Z Zhang, X Zhang - Physics of Fluids, 2024 - pubs.aip.org
In the present study, we investigate into the symmetry-breaking phenomenon in the wakes
produced by two anti-phase pitching foils at zero free-stream velocity. Numerical simulations …
produced by two anti-phase pitching foils at zero free-stream velocity. Numerical simulations …
Thrust generation during steady swimming and acceleration from rest in anguilliform swimmers
Escape swimming is a crucial behavior by which undulatory swimmers evade potential
threats. The hydrodynamics of escape swimming have not been well studied, particularly for …
threats. The hydrodynamics of escape swimming have not been well studied, particularly for …