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Simulation of flows with violent free surface motion and moving objects using unstructured grids
Author(s) -
Löhner Rainald,
Yang Chi,
Oñate Eugenio
Publication year - 2006
Publication title -
international journal for numerical methods in fluids
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 112
eISSN - 1097-0363
pISSN - 0271-2091
DOI - 10.1002/fld.1244
Subject(s) - volume of fluid method , slosh dynamics , free surface , extrapolation , compressibility , solver , mechanics , series (stratigraphy) , discretization , nonlinear system , surface (topology) , computational fluid dynamics , euler's formula , computer science , physics , mathematics , geology , geometry , mathematical analysis , mathematical optimization , quantum mechanics , breakup , paleontology
A volume of fluid (VOF) technique has been developed and coupled with an incompressible Euler/Navier–Stokes solver operating on adaptive, unstructured grids to simulate the interactions of extreme waves and three‐dimensional structures. The present implementation follows the classic VOF implementation for the liquid–gas system, considering only the liquid phase. Extrapolation algorithms are used to obtain velocities and pressure in the gas region near the free surface. The VOF technique is validated against the classic dam‐break problem, as well as series of 2D sloshing experiments and results from SPH calculations. These and a series of other examples demonstrate that the ability of the present approach to simulate violent free surface flows with strong nonlinear behaviour. Copyright © 2006 John Wiley & Sons, Ltd.