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Paper published in a book (Scientific congresses and symposiums)
Using Proper Orthogonal Decomposition and Dynamic Mode Decomposition Methods for Comparing CFD Results Experimental Measurements
Guissart, Amandine; Andrianne, Thomas; Dimitriadis, Grigorios et al.
2013 • In Proceedings of the 15th International Forum on Aeroelasticity and Structural Dynamics, IFASD 2013
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https://hdl.handle.net/2268/154684
 

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Keywords :
Proper Orthogonal Decomposition; Dynamic Mode Decomposition; Bluff body; Modal Assurance Criterion; TrPIV; CFD
Abstract :
[en] A method for the quantitative comparison of numerical and/or experimental data of unsteady aerodynamics around static and oscillating bodies is introduced. It is based on Proper Orthogonal Decomposition (POD) and Dynamic Mode Decomposition (DMD) to extract the dominant structures of the unsteady flow. The proposed method is applied to spatio-temporal data for the flow around a 4:1 rectangular cylinder. Exper- imental data are obtained from wind tunnel testing and two dimensional Time-resolved Particle Image Velocimetry (Tr-PIV) measurements, while unsteady Reynolds Averaged Navier-Stokes (uRANS) are used to compute numerical results. It is demonstrated that the two approaches are complementary and represent a powerful tool that enables the analysis and the quantitative comparison of the main spatial (POD) and temporal (DMD) characteristics of unsteady aerodynamic data.
Disciplines :
Aerospace & aeronautics engineering
Author, co-author :
Guissart, Amandine ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique > Modélisation et contrôle des écoulements turbulents
Andrianne, Thomas  ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique > Département d'aérospatiale et mécanique
Dimitriadis, Grigorios  ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique > Interactions Fluide-Structure - Aérodynamique expérimentale
Terrapon, Vincent  ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique > Modélisation et contrôle des écoulements turbulents
Language :
English
Title :
Using Proper Orthogonal Decomposition and Dynamic Mode Decomposition Methods for Comparing CFD Results Experimental Measurements
Publication date :
26 June 2013
Event name :
International Forum on Aeroelasticity and Structural Dynamics
Event organizer :
Royal Aeronautical Society
Event place :
Bristol, United Kingdom
Event date :
du 24 juin 2013 au 26 juin 2013
Audience :
International
Main work title :
Proceedings of the 15th International Forum on Aeroelasticity and Structural Dynamics, IFASD 2013
Available on ORBi :
since 21 August 2013

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