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A mixed finite-element finite-difference method for nonlinear fluid-structure interaction dynamics. I. Fluid-rigid structure interaction

Xing, J.T., Price, W.G. and Chen, Y.G. (2003) A mixed finite-element finite-difference method for nonlinear fluid-structure interaction dynamics. I. Fluid-rigid structure interaction Proceedings of the Royal Society of London A, 459, (2038), pp. 2399-2430. (doi:10.1098/rspa.2002.1110).

Record type: Article

Abstract

A mixed finite-element finite-difference numerical method is developed to calculate nonlinear fluid-solid interaction problems. In this study, the structure is assumed to be rigid with large motion and the fluid flow is governed by nonlinear, viscous or non-viscous, field equations with nonlinear boundary conditions applied to the free surface and fluid-solid interaction interfaces. A moving coordinate system fixed at a point in the structure is used to describe the fluid flow, and for numerical analysis purposes, an arbitrary Lagrangian-Eulerian mesh system is constructed relative to this moving system. This provides a convenient method of overcoming the difficulties of matching fluid meshes with large solid motion. Nonlinear numerical equations describing nonlinear fluid-solid interaction dynamics are derived through a numerical discretization scheme of study. A coupling iteration process is used to solve these numerical equations. A selection of numerical examples illustrates the developed mathematical model and through numerical simulations it is shown that the proposed approach is practical and useful.

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More information

Published date: 2003
Keywords: fluid-rigid structure interactions, nonlinear dynamics, ale numerical model, nonlinear free surface waves, partitioned solution procedure

Identifiers

Local EPrints ID: 22341
URI: http://eprints.soton.ac.uk/id/eprint/22341
ISSN: 1364-5021
PURE UUID: 2bf056d3-8caf-4e97-8182-9b98a0445a8c

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Date deposited: 23 Mar 2006
Last modified: 17 Jul 2017 16:22

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Contributors

Author: J.T. Xing
Author: W.G. Price
Author: Y.G. Chen

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