Application based on the strictly combined method of BEM and CADMAS-SURF

Kim, Sang-Ho; Yamashiro, Masaru; Yoshida, Akinori; Shin, Seung-Ho; Hong, Key-Yong

Journal of Navigation and Port Research 2009;33(1):65-70.
Published online February 28, 2009.

BEM-CADMAS-SURF 결합해석법에 기초한 수치조파수조의 응용

김상호, 야마시로 마사루, 요시다 아키노리, 신승호, 홍기용

Application based on the strictly combined method of BEM and CADMAS-SURF

Sang-Ho Kim, Masaru Yamashiro, Akinori Yoshida, Seung-Ho Shin, Key-Yong Hong

Abstract

The hybrid numerical model is developed by combining BEM that can calculate the wave motion rapidly under the potential theory and CADMAS-SURF that solves Naoier-Stokes equations for the free surface variation near the structure. In the hybrid model the calculation cf wave motion in a wide field of wave reflection for deep water area is conducted by BEM but for shallow water area by CADMAS-SURF Especially the hybrid model can calculate random wave motions for long term period more rapidly with almost similar accuracy than the calculation of wave motion which was curried out by CADMAS-SURF only. In this study the coupling model was applied to the calculation of the strong nonlinear wave motion such as wave runup and overtopping at the coastal structure on the mild- slope bottom and the results of numerical model were compared with the Toyosima 's experiments of regular wave runup and Coda'sdesign diagram of ramdom wave overtopping, respectively.

Key Words: BEM 해석법; BEM(Boundary Element Method);CADMAS-SURF;Coupling model;Mild- slope;Wave runup;Overtopping