8 papers · 1 filter
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…
On the noise generation and unsteady performance of combined heaving and pitching foils
Nathan Wagenhoffer, Keith W Moored, Justin W Jaworski
A transient two-dimensional acoustic boundary element solver is coupled to a potential flow boundary element solver via Powell's acoustic analogy to determine the acoustic emission…
Scaling Laws for the Propulsive Performance of a Purely Pitching Foil in Ground Effect
Amin Mivehchi, Qiang Zhang, Melike Kurt +2
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…
Intermittent Unsteady Propulsion with a Combined Heaving and Pitching Foil
Emre Akoz, Amin Mivehchi, Keith W. Moored
Inviscid computations are presented of a self-propelled virtual body connected to a combined heaving and pitching foil that uses continuous and intermittent motions. It is determin…
Scaling Laws for Three-Dimensional Combined Heaving and Pitching Propulsors
Fatma Ayancik, Amin Mivehchi, Keith W. Moored
We present new scaling laws for the thrust production and power consumption of three-dimensional combined heaving and pitching hydrofoils by extending the three-dimensional pitchin…
Exact solutions for ground effect
Peter J. Baddoo, Melike Kurt, Lorna J. Ayton +1
"Ground effect" refers to the enhanced performance enjoyed by fliers or swimmers operating close to the ground. We derive a number of exact solutions for this phenomenon, thereby e…