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Numerical Aspects of the Implementation of Artificial Boundary Conditions for Laminar Fluid-Structure Interactions

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Published in Comsol conference - Computational Fluid Dynamics. Boston (Ma, USA) - 3-5 opctobre 2012 - . 2012
Abstract We discuss the implementation of artificial boundary conditions for stationary Navier-Stokes flows past bodies in the half-plane, for a range of low Reynolds numbers. When truncating the half-plane to a finite domain for numerical purposes, artificial boundaries appear. We present an explicit Dirichlet condition for the velocity at these boundaries in terms of an asymptotic expansion for the solution to the problem. We show a substantial increase in accuracy of the computed values for drag and lift when compared with results for traditional boundary conditions. We also analyze the qualitative behavior of the solutions in terms of the streamlines of the flow.
Keywords Navier-Stokes, Exterior domain, Fluid-structure interaction, Computational fluid dynamics, Artificial boundary conditions
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BOECKLE, Christoph Nicolas, WITTWER, Peter. Numerical Aspects of the Implementation of Artificial Boundary Conditions for Laminar Fluid-Structure Interactions. In: Comsol conference - Computational Fluid Dynamics. Boston (Ma, USA). [s.l.] : [s.n.], 2012. https://archive-ouverte.unige.ch/unige:36363

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Deposited on : 2014-05-06

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