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 A: Mathematical, Physical and Engineering Sciences, 459, (2038), 2399-2430. (doi:10.1098/rspa.2002.1110).
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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.
|Keywords:||fluid-rigid structure interactions, nonlinear dynamics, ale numerical model, nonlinear free surface waves, partitioned solution procedure|
|Subjects:||T Technology > T Technology (General)
Q Science > QA Mathematics
|Divisions:||University Structure - Pre August 2011 > School of Engineering Sciences
|Date Deposited:||23 Mar 2006|
|Last Modified:||06 Aug 2015 02:21|
|RDF:||RDF+N-Triples, RDF+N3, RDF+XML, Browse.|
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