Study of Nonlinear Wave Diffraction Using the 2-Dimensional Numerical Wave Tank

J. Ocean Eng. Technol. 1993;7(2):9-18.

2차원 수치 파수조를 이용한 비선형파 산란의 연구

김용직

부산수산대학교 선박공학과

Keywords: Numerical Wave Tank, Nonlinear Wave, Diffraction, Spectral/Boundary-Element Method, Circular Cylinder, Negative Drift Force

핵심용어: 수치파수조, 비선형파, 산란, 스팩트럴/경계요소법, 원형 주상체, 음의 표류력

Abstract

Numerical wave tank is a robust tool by which the nonlinear interactions between the body and the free-surface can be treated in time-domain. In this paper, a two-dimensional numerical wave tank based on the Spectral/Boundary-Element Method is developed, and applied successfully to the study of nonlinear wave diffraction around a submerged circular cylinder. Particularly, it is shown that the high-order wave components of significant wave height are developed in the lee-side of the cylinder and that these waves result in a negative drift force on the circular cylider.