Numerical Simulation of Non-linear Free-surface Motions Using Moving Particle Semi-implicit(MPS) Method

J. Ocean Eng. Technol. 2007;21(6):53-58.

Lee Byung-Hyuk,Jeong Seong-Jun,Ryu Min-Cheol,Kim Yong-Soo,Kim Young-Hun,Park Jong-Chun

Dept. of Naval Architecture and Ocean Engineering Pusan National University,Dept. of Naval Architecture and Ocean Engineering Pusan National University,Ship and Ocean R&D Institute Daewoo Shipbuilding and Marine Engineering Co Ltd,Ship and Ocean R&D I

입자법을 이용한 비선형성 자유표면 유동의 수치 시뮬레이션

이병혁,정성준,류민철,김용수,김영훈,박종천

부산대학교 조선해양공학과,부산대학교 조선해양공학과,대우조선해양(주) 선박해양 기술연구소,대우조선해양(주) 선박해양 기술연구소,한국조선협회 조선인력개발센터,부산대학교 조선해양공학과

Keywords: Particle method, Computational fluid dynamics(CFD), Moving particle semi-implicit method(MPS), Kernel function, Non-linear free-surface flow, Incompressible flow, Dam-broken problem

핵심용어: 입자법, 전산유체역학, 입자간 상호작용 모델, 커넬함수, 비선형성 자유표면 유동, 비압축성 유동, 댐붕괴 문제

Abstract

A particle method, recognized as one of gridless methods, has been developed to investigate non-linear free-surface motions interacting with structures. This method is more feasible and effective than conventional grid methods for solving flow fieldswith complicated boundary shapes. The method consists of particle interaction models representing pressure gradient, diffusion, incompressibility, and the free-surface boundary conditions without grids. In the present study, broken dam problems with various viscosity values are simulated to validate the developed method.