Numerical Determination of the Propeller Design Velocity Field Including Scale Effect and Rudder Influence

摘要

Possibly accurate determination of the propeller design velocity field is one of the most important factors in the design of the ship propulsion systems. It is decisive in achieving high propulsive efficiency and in making accurate propulsive prediction for the ship. Moreover, it enables the detailed design analysis of the unsteady flow phenomena taking place on and around the propeller, resulting in unsteady cavitation, in generation of high pressure pulsation and acoustic emission and in generation of high amplitude unsteady bearing forces. This analysis leads to the development of the optimum propeller design, fulfilling different contradictory criteria in the best possible compromise way.