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Hybrid Finite-Volume Finite-Difference Scheme for the Solution of Boussinesq Equations.

Erduran, K. S. and Ilic, S. and Kutija, V. (2005) Hybrid Finite-Volume Finite-Difference Scheme for the Solution of Boussinesq Equations. International Journal for Numerical Methods in Fluids, 49 (11). pp. 1213-1232.

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Abstract

A hybrid scheme composed of finite-volume and finite-difference methods is introduced for the solution of the Boussinesq equations. While the finite-volume method with a Riemann solver is applied to the conservative part of the equations, the higher-order Boussinesq terms are discretized using the finite-difference scheme. Fourth-order accuracy in space for the finite-volume solution is achieved using the MUSCL-TVD scheme. Within this, four limiters have been tested, of which van-Leer limiter is found to be the most suitable. The Adams-Basforth third-order predictor and Adams-Moulton fourth-order corrector methods are used to obtain fourth-order accuracy in time. A recently introduced surface gradient technique is employed for the treatment of the bottom slope. A new model HYWAVE, based on this hybrid solution, has been applied to a number of wave propagation examples, most of which are taken from previous studies. Examples include sinusoidal waves and bi-chromatic wave propagation in deep water, sinusoidal wave propagation in shallow water and sinusoidal wave propagation from deep to shallow water demonstrating the linear shoaling properties of the model. Finally, sinusoidal wave propagation over a bar is simulated. The results are in good agreement with the theoretical expectations and published experimental results. Copyright © 2005 John Wiley & Sons, Ltd.

Item Type: Article
Journal or Publication Title: International Journal for Numerical Methods in Fluids
Uncontrolled Keywords: Keywords hybrid scheme � finite-volume scheme � Boussinesq model � fourth-order accuracy � deep-water wave propagation � deep to shallow water wave propagation
Subjects: G Geography. Anthropology. Recreation > G Geography (General)
Departments: Faculty of Science and Technology > Lancaster Environment Centre
ID Code: 406
Deposited By: Dr Suzana Ilic
Deposited On: 05 Feb 2007
Refereed?: Yes
Published?: Published
Last Modified: 26 Jul 2012 18:03
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/406

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