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POD and CVT Galerkin reduced‐order modeling of the flow around a cylinder
Author(s) -
Ullmann Sebastian,
Lang Jens
Publication year - 2012
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.201210337
Subject(s) - point of delivery , vortex shedding , drag , laminar flow , cylinder , lift (data mining) , computation , galerkin method , mechanics , computational fluid dynamics , mathematics , flow (mathematics) , space (punctuation) , physics , turbulence , computer science , finite element method , geometry , reynolds number , algorithm , thermodynamics , data mining , agronomy , biology , operating system
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)