1 citations · 1 across the 4 of their papers we have counts for
4 papers
Lift reversal from vortex-surface phase coupling in a heaving foil near a free surface
Qimin Feng, Tianjun Han, Qiang Zhong
Classical descriptions of flapping propulsion near a free surface emphasize the energetic penalties of wave generation, treating the interface primarily as an energy sink. Here, we…
Wavenumber affects the lift of ray-inspired fins near a substrate
Yuanhang Zhu, Leo Liu, Tianjun Han +4
Rays and skates tend to have different fin kinematics depending on their proximity to a ground plane such as the seafloor. Near the ground, rays tend to be more undulatory (high wa…
Tailoring formations of self-organizing hydrofoil schools towards high-efficiency
Tianjun Han, Amin Mivehchi, Seyedali Seyedmirzaei Sarraf +1
We present new unconstrained simulations and constrained experiments of a pair of pitching hydrofoils in a leader-follower in-line arrangement. Free-swimming simulations of foils w…
Revealing the mechanism and scaling laws behind equilibrium altitudes of near-ground pitching hydrofoils
Tianjun Han, Qiang Zhong, Amin Mivehchi +2
A classic lift decomposition (von Kármán & Sears 1938) is conducted on potential flow simulations of a near-ground pitching hydrofoil. It is discovered that previously observed sta…