Numerical study on the hydrodynamic performance of the semi-spade rudder and propeller

Abstract

The semi-spade rudder and KP458 propeller of the KVLCC2 (KRISO very large crude carrier) model tanker are adopted by ITTC maneuvering technical committee in the comparative study of ship maneuverability. The incompressible viscous flow around semi-spade rudder and KP458 propeller is investigated using Reynolds-averaged Navier-Stokes equations, the computational grids are generated using ICEM software, and finite volume method is employed to discretize the governing equations. Combined with turbulence model, the hydrodynamic performance of semi-spade rudder is analyzed at different rudder angles, and the result provides a reference for the estimation of the hydrodynamic characteristics of semi-spade rudder. The multi-reference framework method is employed to carry out the numerical simulation of the flow field around the propeller. The thrust and torque of propeller under different turbulence models are calculated in the simulation. The thrust coefficient curve, torque coefficient curve, and efficiency curve are present. The pressure distributions of the pressure side and suction side of propeller blades are studied at different advance coefficient. Based on the study of the hydrodynamic performance of the semi-spade rudder and propeller, the propellerrudder interaction is simulated and analyzed at different advance coefficient.

Numerical Study of Self-propulsion Resistance of KCS Based on CFD

“…They do not consider the six degrees of freedom changes of the vessel and the interaction between the propeller and the hull. Therefore, predicting vessel resistance in the self-propelled state with six degrees of freedom motion and the use of the propeller to propel the vessel forward is more realistic [6].…”

Improvement of Rudder Cavitation Performance Using Rudder Inflow Measurements in Large Cavitation Tunnel

“…Mascio et al [11] analyzed the vortex-rudder interaction in detail by the propeller within the range of RANS flows, where the rotation of the propeller was solved by a dynamic overlapping meshing algorithm. Yang et al [12] investigated the hydrodynamic performance of a semi-spade rudder operating at different advance coefficients of the propeller. They tested the dependence of RANS-based turbulence models on the propeller-rudder interaction in terms of integral forces and local flows.…”