Numerical Study on the Fluid Dynamics of a Paddleboard

A fluid analysis was performed on a pin-tail type competitive prone paddle board using the interFoam solver of OpenFOAM (bule CFD). Referring to the OpenFOAM ship tutorial, the validity of the analysis grid was verified for a smaller ship problem, and an analysis grid was generated for the paddle board under the same grid conditions. The total number of grids was about 3.4 million, and the analysis was first performed under a running speed of 2 m/s in still water. It was confirmed that the same wave shape as that of an actual competitive board was reproduced. Next, calculations were performed for the case where the board moves toward the waves at 2 m/s under wave conditions of a wavelength of 15 m and a wave height of 0.25 m, and for the case where the board moves toward the waves under the same conditions, and the state of pressure resistance that the board receives was examined. In the future, a similar analysis will be performed on a box-tail type paddle board to examine and clarify the effect of the board shape on the fluid characteristics.