A hydrofoil turbine with simultaneous heaving and pitching is found to have an ability achieve a high power extraction. An OpenFOAM-based numerical model combined non-conformal sliding interface employed study the extraction efficiency of two-dimensional single hydrofoil. The developed validated published experimental results. For Re = 500,000, energy efficiencies are mapped in frequency amplit...

The purpose of this study was to design a hydrofoil which would improve boat performance through enhanced resistance reduction. Commercial CFD code STARCCM+ used solve the Unsteady Reynolds Averaged Navier Stokes Equations for flow around boat. Uncertainity is conducted in order obtain an effective and reliable numerical calculation method. method then validated by direct comparison data at dif...

Unmanned boats have gained a lot of interest in the maritime community during last decade. Most hydrodynamic platforms employed for unmanned are based on traditional relatively simple hulls. In present study, small-scale hydrofoil-assisted (0.6–0.7 m length and 3.5–5.5 kg mass) been developed tested. Design calculations using transverse-strip engineering method with semi-empirical correlations ...

Taking the rigid NACA0012 airfoil as object, key structural parameters of spring–mass system that govern dynamics double-elastic-constrained flapping hydrofoil are numerically studied in this paper. A two-dimensional numerical model, based on CFD software FINE/Marine, is established to investigate influence spring stiffness coefficient, frequency ratio, and damping coefficient motion performanc...

This is intended to introduce the system, which combines BodySuit, especially Powered Suit, and Second Life, as well as its possibilities and its uses in a musical performance application. The system which we propose contains both a gesture controller and robots at the same time. In this system, the Data Suit, BodySuit controls the avatar in Second Life and Second Life controls the exoskeleton,...

We propose a model for planar carangiform swimming based on conservative equations for the interaction of a rigid body and an incompressible fluid. We account for the generation of thrust due to vortex shedding through controlled coupling terms. We investigate the correct form of this coupling experimentally with a robotic propulsor, comparing its observed behavior to that predicted by unsteady...

Acoustic field generated by a single vortex approaching a hydrofoil is studied. A combined vortex/RANS simulation for the near–field unsteady vorticity is developed to include effects from RANS Reynolds stresses. The far-field acoustics is calculated using a vortex sound formula with the near-field vorticity as the source. The results show that at a higher incident angle when the RANS shows a s...