Table of Contents
ISRN Applied Mathematics
Volume 2012, Article ID 521012, 16 pages
http://dx.doi.org/10.5402/2012/521012
Research Article

A Novel Algorithm of Advection Procedure in Volume of Fluid Method to Model Free Surface Flows

1Faculty of Marine Technology, Amirkabir University of Technology, 424 Hafez Avenue, P.O. Box 15875-4413, Tehran, Iran
2Department of Civil Engineering, Ferdowsi University, Mashhad, Iran

Received 4 December 2011; Accepted 19 January 2012

Academic Editor: H. Du

Copyright © 2012 M. J. Ketabdari and H. Saghi. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

In this study, the developed procedure of advection in volume of fluid (VOF) method is presented for free surface modeling. The fluid is assumed to be incompressible and viscous and therefore, Navier-Stokes and continuity are considered as governing equations. Applying Youngs’ algorithm in staggered grids, it is assumed that fluid particles in the cell have the same velocity of the cell faces. Therefore, fluxes to neighboring cells are estimated based on cell face velocities. However, these particles can show different velocities between two adjacent cell faces. In developed model, the velocity in mass center of fluid cell is evaluated to calculate fluxes from cell faces. The performance of the model is evaluated using some alternative schemes such as translation, rotation, shear test, and dam break test. These tests showed that the developed procedure improves the results when using coarse grids. Therefore, the Modified Youngs-VOF (MYV) method is suggested as a new VOF algorithm which models the free surface problems more accurately.