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Model order reduction technique for large scale flow computations
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SYSNO ASEP 0499769 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Model order reduction technique for large scale flow computations Author(s) Isoz, Martin (UT-L) ORCID Number of authors 1 Source Title Topical problem of Fluid Mechanics 2018. - Praha : Ústav termomechaniky AV ČR, v. v. i., 2018 / Šimurda D. ; Bodnár T. - ISSN 2336-5781 - ISBN 978-80-87012-65-9 Pages s. 153-160 Number of pages 8 s. Publication form Print - P Action Conference TOPICAL PROBLEMS OF FLUID MECHANICS 2018 Event date 21.02.2018 - 23.02.2018 VEvent location Praha Country CZ - Czech Republic Event type EUR Language eng - English Country CZ - Czech Republic Keywords proper orthogonal decomposition ; discrete empirical interpolation method ; computational fluid dynamics ; OpenFOAM Subject RIV BA - General Mathematics OECD category Applied mathematics R&D Projects EF15_003/0000493 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Institutional support UT-L - RVO:61388998 DOI 10.14311/TPFM.2018.020 Annotation Current progress in numerical methods and available computational power combined with industrial needs promote the development of more and more complex models. However, such models are, due to their complexity, expensive from the point of view of the data storage and the time necessary for their evaluation. The model order reduction (MOR) seeks to reduce the computational complexity of large scale models. We present an application of MOR to the problems originating in the finite volume (FV) discretization of incompressible Navier-Stokes equations. Our approach to MOR is based on the proper orthogonal decomposition (POD)
with Galerkin projection. Moreover, the problems arising from the nonlinearities present in the original model are adressed within the framework of the discrete empirical interpolation method (DEIM). We provide a link between the POD-DEIM based MOR and OpenFOAM, which is an open-source CFD toolbox capable of solving even industrial scale problems. The availability of a link between OpenFOAM and POD-DEIM based MOR enables a direct order reduction for large scale systems originating in the industrial practice.Workplace Institute of Thermomechanics Contact Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Year of Publishing 2019 Electronic address http://www.it.cas.cz/fm2015/im/admin/showfile/data/my/Papers/2018/20-TPFM2018.pdf
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