POD and CVT Galerkin reduced-order modeling of the flow around a cylinder

Authors

  • Sebastian Ullmann,

    Corresponding author
    1. Department of Mathematics, Technische Universität Darmstadt, Dolivostr. 15, 64293 Darmstadt
    2. Center of Smart Interfaces, Technische Universität Darmstadt, Petersenstr. 30, 64287 Darmstadt
    • phone +49 6151 16 2488, fax +49 6151 16 2747
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  • Jens Lang

    Corresponding author
    1. Department of Mathematics, Technische Universität Darmstadt, Dolivostr. 15, 64293 Darmstadt
    2. Center of Smart Interfaces, Technische Universität Darmstadt, Petersenstr. 30, 64287 Darmstadt
    3. Graduate School Computational Engineering, Technische Universität Darmstadt, Dolivostr. 15, 64293 Darmstadt
    • phone +49 6151 16 2389, fax +49 6151 16 2747
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Abstract

Reduced-order models are applied to the laminar vortex-shedding flow around a circular cylinder. The models rely on approximations of the solutions in the space spanned by a set of POD or CVT reduced basis vectors, which are computed from snapshots of a numerical solution. To enable the computation of drag and lift forces, the modeling of the velocity and pressure is realized via a one-way coupling. A comparison of the results of the CVT and POD reduced-order models is presented. (© 2012 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim)

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