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Journal of Applied Mathematics
Volume 2013, Article ID 920912, 12 pages
http://dx.doi.org/10.1155/2013/920912
Research Article

Numerical Study of Violent Impact Flow Using a CIP-Based Model

1College of Natural Resources and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266590, China
2Ocean College, Zhejiang University, Hangzhou 310058, China
3State Key Laboratory of Satellite Ocean Environment Dynamics, The Second Institute of Oceanography, Hangzhou 310012, China
4College of Engineering, Ocean University of China, Qingdao 266100, China

Received 10 April 2013; Revised 10 July 2013; Accepted 12 July 2013

Academic Editor: Zhihong Guan

Copyright © 2013 Qiao-ling Ji et al. 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

A two-phase flow model is developed to study violent impact flow problem. The model governed by the Navier-Stokes equations with free surface boundary conditions is solved by a Constrained Interpolation Profile (CIP)-based high-order finite difference method on a fixed Cartesian grid system. The free surface is immersed in the computation domain and expressed by a one-fluid density function. An accurate Volume of Fluid (VOF)-type scheme, the Tangent of Hyperbola for Interface Capturing (THINC), is combined for the free surface treatment. Results of another two free surface capturing methods, the original VOF and CIP, are also presented for comparison. The validity and utility of the numerical model are demonstrated by applying it to two dam-break problems: a small-scale two-dimensional (2D) and three-dimensional (3D) full scale simulations and a large-scale 2D simulation. Main attention is paid to the water elevations and impact pressure, and the numerical results show relatively good agreement with available experimental measurements. It is shown that the present numerical model can give a satisfactory prediction for violent impact flow.