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2차원 진행규칙파열에서의 쇄파현상에 따른 비선형성 파의 특성에 관한 수치적 연구
박종천(Jong-Chun Park),宮田 秀明(Hideaki Miyata) 한국해양공학회 1996 韓國海洋工學會誌 Vol.10 No.3
The breaking phenomenon of regular periodic waves generated by a numerical wave maker is simulated by finite-difference method which can cope with strong interface motions. The air and water flows are simultaneously solved in the time-marching solution procedure for the Navier-Stokes equation. A density-function technique is devised for the implementation of the interface conditions. The accuracy is examined and applied to the simulation of two-dimensional breaking phenomena of periodic gravity waves.
부유식 해양구조물 주위의 쇄파현상을 동반한 3차원 비선형성 파의 수치해석
박종천(Jong-Chun Park),宮田 秀明(Hideaki Miyata) 한국해양공학회 1996 韓國海洋工學會誌 Vol.10 No.3
Numerical simulation is made of the three-dimensional wave breaking motion about a part of a floating offshore structure containing a circular cylinder mounted vertically onto a lower hull in regular periodic gravity wave generated by a numerical wave maker. TUMMAC-Ⅷ finite-difference method is newly developed for such a problem. By use of density-function technique the three-dimensional wave breaking motion is approximately implemented in the framework of rectangular grid system. A porosity technique is devised for the implementation of the no-slip body boundary conditions. The generation of breaking waves by the interaction of incident waves with the structure is well simulated and interesting features of breaking waves are revealed with containing degree of quantitative and qualitative accuracy.