Sensitivity Analysis of the Effect of Speed and Inclination Angle on Water-Entry Slamming Pressure of the Bow

Abstract

In this paper, a method about the water-entry slamming of a two-dimensional (2D) bow structure has been proposed based on the experimental and simulation results. According to this method, the sensitivity analysis has been carried out about the effect of speed and inclination angle on the slamming pressure of the bow. Firstly, a 2D ship bow experimental model was performed to obtain the slamming pressure distribution at different measuring points under different speeds. Then, numerical simulation for the water-entry slamming of this experimental model was conducted to obtain the pressure distribution on the experimental model under different working conditions. Finally, the experimental results were compared with the numerical simulation results to evaluate the effect of speed and inclination angle on the slamming pressure of the bow. The results show that the slamming pressure is more sensitive to speed variation within the low-speed range. The effect of inclination angle on the slamming pressure is more obvious in the small angle condition. When the inclination angle is larger than 45°, the effect is limited.