Numerical and experimental study of wave characteristics around vertical cylinder

초록

In a multiple array of vertical cylinders, flow patterns including free surface and viscous effects are very complex and very interactive between cylinders. The patterns are turbulent and non-linear depending on various factors. The gap and flow incoming velocity of upstream can affect on the downstream cylinder. In this study, the flow characteristics around two vertical cylinders including free surface and viscous effects are investigated numerically and experimentally. As the gap between cylinders is changed at fixed coming velocity, the wave elevation and the pressure distributions around cylinders are observed and compared by experimental and numerical approaches. The F.D.M and multi-block method are applied in the numerical study. The wave elevations and the pressures around the cylinder are measured in the experiment. The results can be applied in the understanding and design of multiple pile array structures.