A New Method to Predict the Propeller Body-force Distribution for Modeling the Propeller in Viscous CFD Code without Potential Flow Code

摘要

This paper reports the development of a new body-force model for the rotating propeller within viscous flow code and its application to uniform flow and propeller advancing with the angle of attack. A simplified quasi-steady blade element theory with the infinite-bladed propeller model (time averaged propeller induced velocity field) is coupled with the Reynolds averaged Navier-Stokes (RANS) code to determine the thrust and the torque distributions. The present effort aims to reduce the computational effort while keeping the effect of ship with motion in quasi-steady manner for propeller. The solid-surface effect on the propeller loading and power is also studied. Open-water validation simulations are done for the Methodical-AU type fixed-pitch propeller. Reported results show fair predictive agreement between the new body-force model and the experimental data.