KCS선형의 선회운동시험에 관한 수치해석적 연구

Abstract

The present paper provides a numerical approach to simulate the circular motion test and its application result for KCS hull form. A finite volume based RANS code capable to analyze the interactions between a ship hull, propeller and rudder is used to solve the governing equation. A body force technique is introduced to model the effects of the propeller in which the propeller loads are obtained from potential flow analysis using an unsteady lifting surface method. The free surface is captured by using a two-phase level-set method and the realizable k-ε model is used for turbulence closure. The hull attitude in vertical plane, trim and sinkage are estimated by solving the ship motion equation and then considered in the computation by translating and rotating the grid according to the values. For the validation of the proposed method, the numerical results for forces are compared with those of the CPMC captive model test performed in MOERI/KORDI.