The paper focuses on the study of a semi-activated system, based combination two movements forced pitching and free-heaving motion. Therefore, quantifying with accuracy hydrodynamic forces applied hydrofoil seems to be crucial. This is investigated throughout numerical analysis dynamics. deformable structure oscillating in low-Reynolds number flow. In this study, animated by combined heaving co...

This paper presents the results of a study dependence deformations and heaving forces loam sandy during freezing in closed system. On basis experimental data, graphs deformation thawing sediment are obtained. The data obtained were analyzed, as result which some regularities revealed between degree physical indicators properties.

Inviscid computations are presented of a self-propelled virtual body connected to combined heaving and pitching foil that uses continuous intermittent motions. It is determined swimming can improve efficiency when the dimensionless heave ratio $h^* < 0.7$ while it degrades for \geq 0.7$. This consequence physical origins force production pitch-dominated ($h^* 0.5$) heave-dominated > Based on in...

We investigate the role of linear mechanisms in emergence nonlinear horizontal self-propelled states a heaving foil quiescent fluid. Two are analyzed: periodic state unidirectional motion and quasi-periodic slow back & forth around mean position. The is explained through fluid-solid Floquet stability analysis non-propulsive symmetric base solution. Unlike purely-hydrodynamic analysis, our accur...