Titre :

Data driven estimation of fluid flows: long-term prediction of velocity fields using machine learning

Auteur(s) :

Dubois, Pierre [Auteur]
DAAA, ONERA [Lille]
Gomez, Thomas [Auteur]
Laboratoire de Mécanique des Fluides de Lille - Kampé de Fériet [LMFL]
Planckaert, Laurent [Auteur]
DAAA, ONERA [Lille]
Perret, Laurent [Auteur]
Laboratoire de recherche en Hydrodynamique, Énergétique et Environnement Atmosphérique [LHEEA]

Titre de la manifestation scientifique :

AERO 2020+1 - 55th 3AF International Conference on Applied Conference

Ville :

Poiters (virtuel)

Pays :

France

Date de début de la manifestation scientifique :

2021-04-12

Discipline(s) HAL :

Sciences de l'ingénieur [physics]
Physique [physics]
Mathématiques [math]
Informatique [cs]

Résumé en anglais : [en]

This paper gives a framework for the data-driven estimation of an unsteady fluid flow field. The strategy combines machine learning tools for the reduction, the reconstruction and the prediction of the considered system. ...
Lire la suite >This paper gives a framework for the data-driven estimation of an unsteady fluid flow field. The strategy combines machine learning tools for the reduction, the reconstruction and the prediction of the considered system. The reduction is performed by linear autoencoding while support vector regression and dynamical mode decomposition are respectively used as reconstruction and prediction models. Starting from an initial condition, reconstructions are frequently assimilated to update erroneous predictions. The procedure is tested on four cases with increasing complexity and robustness is assessed through training and testing errors. Quantitative results suggest that reconstruction and prediction models purely learnt from data can be used for effective data assimilation, hence enabling the long-term prediction of even complex fluid flows.Lire moins >

Langue :

Anglais

Comité de lecture :

Oui

Audience :

Internationale

Vulgarisation :

Non

Collections :

• Laboratoire de Mécanique des Fluides de Lille Kampé de Fériet (LMFL) - UMR 9014

Source :

Harvested from HAL