Model order reduction for a flow past a wall-mounted cylinder

• Autorzy: Stankiewicz W. , Kotecki K. , Morzyński M. , Roszak R. , Szeliga W.
• Języki publikacji: EN

Abstrakty

EN

Reduced order models allow quickly predict fluid behaviour and to better understand flow phenomena. They are the key enablers of closed-loop flow control. In this paper, reduced-order model (ROM) of an incompressible flow around a wall-mounted cylinder is constructed, by means of Galerkin projection of Navier–Stokes equations onto space spanned by the most dominant eigenmodes of dynamic mode decomposition (DMD). Additionally, genetic algorithm-based calibration is applied to improve the predictive performance of the model. The resulting low-dimensional model of the flow consists of six degrees of freedom and precisely reproduces the dynamics of limit cycle oscillations.

Słowa kluczowe

EN

ROM; Galerkin Projection; DMD; CFD

• Wydawca: Instytut Podstawowych Problemów Techniki PAN
• Czasopismo: Archives of Mechanics
• Rocznik: 2016
• Tom: Vol. 68, nr 2
• Strony: 161--176
• Opis fizyczny: Bibliogr. 42 poz., rys. kolor.

Twórcy

autor

Stankiewicz W.

• Division of Virtual Engineering Institute of Combustion Engines and Transport Poznan University of Technology Piotrowo 3 60-965 Poznań, Poland

autor

Kotecki K.

• Division of Virtual Engineering Institute of Combustion Engines and Transport Poznan University of Technology Piotrowo 3 60-965 Poznań, Poland

autor

Morzyński M.

• Division of Virtual Engineering Institute of Combustion Engines and Transport Poznan University of Technology Piotrowo 3 60-965 Poznań, Poland

autor

Roszak R.

• Division of Virtual Engineering Institute of Combustion Engines and Transport Poznan University of Technology Piotrowo 3 60-965 Poznań, Poland

autor

Szeliga W.

• Faculty of Machines and Transportation Poznan University of Technology Piotrowo 3 60-965 Poznań, Poland

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Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.