A survey of projection-based model reduction methods for parametric dynamical systems

P Benner, S Gugercin, K Willcox - SIAM review, 2015 - SIAM
Numerical simulation of large-scale dynamical systems plays a fundamental role in studying
a wide range of complex physical phenomena; however, the inherent large-scale nature of …

Survey of multifidelity methods in uncertainty propagation, inference, and optimization

B Peherstorfer, K Willcox, M Gunzburger - Siam Review, 2018 - SIAM
In many situations across computational science and engineering, multiple computational
models are available that describe a system of interest. These different models have varying …

The GNAT method for nonlinear model reduction: effective implementation and application to computational fluid dynamics and turbulent flows

K Carlberg, C Farhat, J Cortial, D Amsallem - Journal of Computational …, 2013 - Elsevier
The Gauss–Newton with approximated tensors (GNAT) method is a nonlinear model-
reduction method that operates on fully discretized computational models. It achieves …

Learning physics-based models from data: perspectives from inverse problems and model reduction

O Ghattas, K Willcox - Acta Numerica, 2021 - cambridge.org
This article addresses the inference of physics models from data, from the perspectives of
inverse problems and model reduction. These fields develop formulations that integrate data …

Galerkin v. least-squares Petrov–Galerkin projection in nonlinear model reduction

K Carlberg, M Barone, H Antil - Journal of Computational Physics, 2017 - Elsevier
Abstract Least-squares Petrov–Galerkin (LSPG) model-reduction techniques such as the
Gauss–Newton with Approximated Tensors (GNAT) method have shown promise, as they …

Finite volume POD-Galerkin stabilised reduced order methods for the parametrised incompressible Navier–Stokes equations

G Stabile, G Rozza - Computers & Fluids, 2018 - Elsevier
In this work a stabilised and reduced Galerkin projection of the incompressible unsteady
Navier–Stokes equations for moderate Reynolds number is presented. The full-order model …

Machine learning for fast and reliable solution of time-dependent differential equations

F Regazzoni, L Dede, A Quarteroni - Journal of Computational physics, 2019 - Elsevier
We propose a data-driven Model Order Reduction (MOR) technique, based on Artificial
Neural Networks (ANNs), applicable to dynamical systems arising from Ordinary Differential …

Model reduction for transport-dominated problems via online adaptive bases and adaptive sampling

B Peherstorfer - SIAM Journal on Scientific Computing, 2020 - SIAM
This work presents a model reduction approach for problems with coherent structures that
propagate over time, such as convection-dominated flows and wave-type phenomena …

Reduced basis methods: Success, limitations and future challenges

M Ohlberger, S Rave - arxiv preprint arxiv:1511.02021, 2015 - arxiv.org
Parametric model order reduction using reduced basis methods can be an effective tool for
obtaining quickly solvable reduced order models of parametrized partial differential equation …

Adaptive multiscale model reduction with generalized multiscale finite element methods

E Chung, Y Efendiev, TY Hou - Journal of Computational Physics, 2016 - Elsevier
In this paper, we discuss a general multiscale model reduction framework based on
multiscale finite element methods. We give a brief overview of related multiscale methods …