Waserstein model reduction approach for parametrized flow problems in porous media

The aim of this work is to build a reduced-order model for parametrized porous media equations. The main challenge of this type of problems is that the Kolmogorov width of the solution manifold typically decays quite slowly and thus makes usual linear model-order reduction methods inappropriate. In...

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Published in:arXiv.org 2022-05
Main Authors: Battisti, Beatrice, Blickhan, Tobias, Enchéry, Guillaume, Ehrlacher, Virginie, Lombardi, Damiano, Mula, Olga
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Language:English
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Decay rate
Model reduction
Parameterization
Porous media
Reduced order models
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Blickhan, Tobias
Enchéry, Guillaume
Ehrlacher, Virginie
Lombardi, Damiano
Mula, Olga
description The aim of this work is to build a reduced-order model for parametrized porous media equations. The main challenge of this type of problems is that the Kolmogorov width of the solution manifold typically decays quite slowly and thus makes usual linear model-order reduction methods inappropriate. In this work, we investigate an adaptation of the methodology proposed in a previous work, based on the use of Wasserstein barycenters, to the case of non-conservative problems. Numerical examples in one-dimensional test cases illustrate the advantages and limitations of this approach and suggest further research directions that we intend to explore in the future.
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subjects Decay rate
Model reduction
Parameterization
Porous media
Reduced order models
title Waserstein model reduction approach for parametrized flow problems in porous media
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