Numerical Simulation of Three Dimensional Free Surface Flow

J. Ocean Eng. Technol. 1990;4(1):55-61.

3차원 자유표면 유동의 수치 시뮬레이션

강신영

한국해양대학 해양공학과

Keywords: Navier Stokes Equation, VOF Algorithm, 3-D, FDM, Free Surface, Numerical Simulation

핵심용어: 네비어 스톡스 방정식, 용적함수법, 3차원, 유한차분법, 자유표면, 수치실험

Abstract

For the tracking of three dimensional free surface motions, a method referred to as the Volume of Fluid(VOF) algorithm is extended. In order to calculate the slope of three dimensional free surface which is the most important for the advection algorithm that decides the amount of fluid from cell to cell and for the application of free surface boundary condition, a simple method utilizing two dimensional slope informations is introduced. The extended algroithm is tested by demonstrating the simulation of a propagating sinusoidal wave through the channel whose width changes abruptly.