선박운동해석을 위한 URANS 시물레이션 기법연구

Abstract

This paper provides the structure of an URANS(Unsteady Reynolds Averaged Navier-Stokes) based simulation method and its validation results for the ship motion problem. The motion of the hull computed from the equations of motion is considered in the momentum equations as the relative fluid motions with respect to a non-inertial coordinates system. A finite volume method is used to solve the governing equations, while the free surface is captured by using a two-phase level-set method and the realizable k-e model is used for turbulence closure. For the validation of the present numerical approach. the numerical results of the resistance and motion tests for DTMB 5415 at two ship speeds are compared against available experimental data.ed in the momentum equations as the relative fluid motions with respect to a non-inertial coordinates system. A finite volume method is used to solve the governing equations, while the free surface is captured by using a two-phase level-set method and the realizable k-e model is used for turbulence closure. For the validation of the present numerical approach. the numerical results of the resistance and motion tests for DTMB 5415 at two ship speeds are compared against available experimental data.