잠수체 주위 자유표면 유동의 수치계산

Abstract

In this paper, the high-order spectral/coundary0element method is developed to calculate the 3-dimensional water waves generated by a submerged body. This method is one of the most efficient numerical methods by which the nonlinear gravity waves can be simulated in time-domain. Three-dimensional free-surface flows generated by a submerged sphere which is moving under the free-surface are calculated. Throught example calculations, nonlinear effects in free-surface profiles and hydrodynamic forces are shown. Comparisons with others' results show good agreements.