Two Dimensional Linear Irregular Wave Propagation by FMBEM

In this paper, Fast Multipole Boundary Element Method (FMBEM) is developed to build a numerical wave tank, which is used to simulate a linear irregular wave train. Comparison is illustrated between the simulated and theoretical waves to validate the precision of FMBEM. Furthermore, the time consumptions of FMBEM are also compared with the traditional BEM to demonstrate its high efficiency. Besides, this effective numerical method is used to simulate the wave propagation with the influence of a fixed surface piercing body. All the results demonstrate that the proposed method is an effective numerical technique to study the linear irregular wave propagation with both high accuracy and efficiency.