Article (Scientific journals)
Physics-agnostic and physics-infused machine learning for thin films flows: Modelling, and predictions from small data
Martin-Linares, Cristina P.; Psarellis, Yorgos M.; Karapetsas, George et al.
2023In Journal of Fluid Mechanics, 975
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Keywords :
computational methods; machine learning; thin films; Engineering applications; Flow modelling; Flow prediction; Machine-learning; Modelling and predictions; Navier-Stokes equation; Small data; Surrogate modeling; Thin film flow; Thin-films; Condensed Matter Physics; Mechanics of Materials; Mechanical Engineering; Applied Mathematics; Physics - Fluid Dynamics; Computer Science - Numerical Analysis; Mathematics - Numerical Analysis
Abstract :
[en] Numerical simulations of multiphase flows are crucial in numerous engineering applications, but are often limited by the computationally demanding solution of the Navier-Stokes (NS) equations. The development of surrogate models relies on involved algebra and several assumptions. Here, we present a data-driven workflow where a handful of detailed NS simulation data are leveraged into a reduced-order model for a prototypical vertically falling liquid film. We develop a physics-agnostic model for the film thickness, achieving a far better agreement with the NS solutions than the asymptotic Kuramoto-Sivashinsky (KS) equation. We also develop two variants of physics-infused models providing a form of calibration of a low-fidelity model (i.e. the KS) against a few high-fidelity NS data. Finally, predictive models for missing data are developed, for either the amplitude, or the full-field velocity and even the flow parameter from partial information. This is achieved with the so-called 'gappy diffusion maps', which we compare favourably to its linear counterpart, gappy POD.
Disciplines :
Engineering, computing & technology: Multidisciplinary, general & others
Author, co-author :
Martin-Linares, Cristina P.;  Department of Mechanical Engineering, Whiting School of Engineering, Johns Hopkins University, Baltimore, United States
Psarellis, Yorgos M.;  Department of Chemical and Biomolecular Engineering, Whiting School of Engineering, Johns Hopkins University, Baltimore, United States
Karapetsas, George ;  Department of Chemical Engineering, Aristotle University of Thessaloniki, Thessaloniki, Greece
KORONAKI, Eleni  ;  University of Luxembourg > Faculty of Science, Technology and Medicine > Department of Engineering > Team Stéphane BORDAS ; School of Chemical Engineering, National Technical University of Athens, Athens, Greece
Kevrekidis, Ioannis G.;  Department of Chemical and Biomolecular Engineering, Whiting School of Engineering, Johns Hopkins University, Baltimore, United States
External co-authors :
yes
Language :
English
Title :
Physics-agnostic and physics-infused machine learning for thin films flows: Modelling, and predictions from small data
Publication date :
27 November 2023
Journal title :
Journal of Fluid Mechanics
ISSN :
0022-1120
eISSN :
1469-7645
Publisher :
Cambridge University Press
Volume :
975
Peer reviewed :
Peer Reviewed verified by ORBi
Funding text :
This work was partially supported by the US AFOSR and by the US DOE (IGK). CML received the support of a \u2018la Caixa\u2019 Foundation Fellowship (ID 100010434), code LCF/BQ/AA19/11720048. EDK received funding from the European Union's Horizon 2020 research and innovation programme under the Marie Sk\u0142odowska-Curie grant agreement No 890676 - DataProMat.
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