On the Hull Surface Pressure under the Action of a Propeller

Abstract

This paper deals with the hull surface pressure of the full hull form ship under the action of a propeller. The distributions of the hull surface pressure were calculated by the potential theory in which the screw propelle was represented by the sink distribution on the actuator disk. It was shown that there were some discrepancies between calculated and experimented results. Flow visualization tests showed that these discrepancies were caused by the change of 3-dimensional separation regions due to the propeller action. By modifying such effect with the experimental function, the calculated thrust deduction coefficients by the present method agreed with the measured ones on the self-propulsion tests.