Hydrodynamic analysis of 3-D hydrofoil under free surface and the study on experiment

A time domain panel method based on Green’s theorem was developed for the hydrodynamic analysis of a three-dimensional hydrofoil moving under the free surface in the time domain. The interrelated hydrodynamic experiment was also made.The Rankine sources and dipoles were distributed on boundary surfaces including the hydrofoil body surface and free surface.The dipoles were also placed on the wake surface. The Kutta condition was satisfied. A time-stepping panel method was employed in this paper. The numerical results of pressure distribution, lifting force, wave resistance and wave patterns were presented for the three-dimensional hydrofoil. The computed results were compared with experimental. The results show that the numerical method could be used in research on the analysis of optimization design of the hydrofoil, the oscillating hydrofoil moving near free surface and the wave-making of hydrofoil craft.