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Original title:
Model order reduction technique for large scale flow computations
Authors: Isoz, Martin
Document type: Papers
Conference/Event: Conference TOPICAL PROBLEMS OF FLUID MECHANICS 2018, Praha (CZ), 20180221
Year: 2018
Language: eng
Abstract: 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)\nwith 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.
Keywords: computational fluid dynamics; discrete empirical interpolation method; OpenFOAM; proper orthogonal decomposition
Project no.: EF15_003/0000493
Funding provider: GA MŠk
Host item entry: Topical problem of Fluid Mechanics 2018, ISBN 978-80-87012-65-9, ISSN 2336-5781
Institution: Institute of Thermomechanics AS ČR (web)
Document availability information: Fulltext is available at external website.
External URL: http://www.it.cas.cz/fm2015/im/admin/showfile/data/my/Papers/2018/20-TPFM2018.pdf
Original record: http://hdl.handle.net/11104/0292285
Permalink: http://www.nusl.cz/ntk/nusl-391533
The record appears in these collections:
Research > Institutes ASCR > Institute of Thermomechanics
Conference materials > Papers
Authors: Isoz, Martin
Document type: Papers
Conference/Event: Conference TOPICAL PROBLEMS OF FLUID MECHANICS 2018, Praha (CZ), 20180221
Year: 2018
Language: eng
Abstract: 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)\nwith 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.
Keywords: computational fluid dynamics; discrete empirical interpolation method; OpenFOAM; proper orthogonal decomposition
Project no.: EF15_003/0000493
Funding provider: GA MŠk
Host item entry: Topical problem of Fluid Mechanics 2018, ISBN 978-80-87012-65-9, ISSN 2336-5781
Institution: Institute of Thermomechanics AS ČR (web)
Document availability information: Fulltext is available at external website.
External URL: http://www.it.cas.cz/fm2015/im/admin/showfile/data/my/Papers/2018/20-TPFM2018.pdf
Original record: http://hdl.handle.net/11104/0292285
Permalink: http://www.nusl.cz/ntk/nusl-391533
The record appears in these collections:
Research > Institutes ASCR > Institute of Thermomechanics
Conference materials > Papers
Record created 2019-02-13, last modified 2021-11-24