A study on the propeller open water performance due to immersion depth and regular wave

초록

To estimate the performance of ships in waves, there have been studies on propeller performance in various operating environments. In previous studies, it was confirmed that propeller open water performance is diminished by ventilation when the propeller operates near the free surface. However, most of these studies were focused on the change in the advance ratio at the same immersion depth and the effect of varying the immersion depth with the same advance ratio. In this study, the propeller open water performance due to the variation of immersion depth in waves was calculated using computational fluid dynamics, and the POW characteristics due to immersion depth in calm water were compared with the POW characteristics in waves. As a result, it was concluded that the tendency of propeller performance by variation of immersion depth due to wave elevation is similar to the tendency of propeller performance due to a change of immersion depth in calm water. Also, the effect of water particle velocity due to the wave phase is similar to the variation of propeller performance due to the changing of advance ratio in calm water.

키워드