Solution of moving-boundary problems by the spectral element method

Details Solution of moving-boundary problems by the spectral element method Solution of moving-boundary problems by the spectral element method

2007-09-04

arxiv.org/abs/0709.0355v1

Computer Science

Computational Engineering, Finance, and Science

Applied Numerical Mathematics, In Press, 2008

Scientific paper

10.1016/j.apnum.2007.04.009

This paper describes a novel numerical model aiming at solving moving-boundary problems such as free-surface flows or fluid-structure interaction. This model uses a moving-grid technique to solve the Navier--Stokes equations expressed in the arbitrary Lagrangian--Eulerian kinematics. The discretization in space is based on the spectral element method. The coupling of the fluid equations and the moving-grid equations is essentially done through the conditions on the moving boundaries. Two- and three-dimensional simulations are presented: translation and rotation of a cylinder in a fluid, and large-amplitude sloshing in a rectangular tank. The accuracy and robustness of the present numerical model is studied and discussed.

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