We present three-dimensional scaling relations for the thrust production and power consumption of combined heaving pitching hydrofoils by extending laws introduced Ayancik et al. (“Scaling Laws Propulsive Performance Three-Dimensional Pitching Propulsors,” Journal Fluid Mechanics, Vol. 871, July 2019, pp. 1117–1138). Self-propelled inviscid simulations previously published experimental data are...

We report direct numerical simulations of the flow around a spanwise-flexible wing in forward flight. The were performed at $Re=1000$ for wings aspect ratio 2 and 4 undergoing heaving pitching motion Strouhal number $St_c\approx 0.5$ . have varied effective stiffness $\varPi _1$ while keeping inertia constant, _0=0.1$ It has been found that there is an optimal aerodynamic performance linked to ...

This study, dedicated to flapping wing propulsion in immediate proximity a wall or between closely spaced flat walls, makes use of the method matched asymptotic expansions. Its purpose is create simplified parametric model such system based on single major assumption: closeness oscillating solid wall. In case rectangular finite-aspect ratio wing, analytical expressions have been obtained for co...