Reduced-order modeling

Z Bai, PM Dewilde, RW Freund - Handbook of numerical analysis, 2005 - Elsevier
In recent years, reduced-order modeling techniques have proven to be powerful tools for
various problems in circuit simulation. For example, today, reduction techniques are …

Bridging Large Eddy Simulation and Reduced Order Modeling of Convection-Dominated Flows through Spatial Filtering: Review and Perspectives

A Quaini, O San, A Veneziani, T Iliescu - arXiv preprint arXiv:2407.00231, 2024 - arxiv.org
Reduced order models (ROMs) have achieved a lot of success in reducing the
computational cost of traditional numerical methods across many disciplines. For convection …

On closures for reduced order models—A spectrum of first-principle to machine-learned avenues

SE Ahmed, S Pawar, O San, A Rasheed, T Iliescu… - Physics of …, 2021 - pubs.aip.org
For over a century, reduced order models (ROMs) have been a fundamental discipline of
theoretical fluid mechanics. Early examples include Galerkin models inspired by the Orr …

Hybrid neural network reduced order modelling for turbulent flows with geometric parameters

M Zancanaro, M Mrosek, G Stabile, C Othmer, G Rozza - Fluids, 2021 - mdpi.com
Geometrically parametrized partial differential equations are currently widely used in many
different fields, such as shape optimization processes or patient-specific surgery studies …

Residual-Based Stabilized Reduced-Order Models of the Transient Convection–Diffusion–Reaction Equation Obtained Through Discrete and Continuous Projection

E Parish, M Yano, I Tezaur, T Iliescu - Archives of Computational Methods …, 2024 - Springer
Abstract Galerkin and Petrov–Galerkin projection-based reduced-order models (ROMs) of
transient partial differential equations are typically obtained by performing a dimension …

Overcoming slowly decaying Kolmogorov n-width by transport maps: application to model order reduction of fluid dynamics and fluid--structure interaction problems

M Nonino, F Ballarin, G Rozza, Y Maday - arXiv preprint arXiv:1911.06598, 2019 - arxiv.org
In this work we focus on reduced order modelling for problems for which the resulting
reduced basis spaces show a slow decay of the Kolmogorov $ n $-width, or, in practical …

Error analysis of a SUPG-stabilized POD-ROM method for convection-diffusion-reaction equations

V John, B Moreau, J Novo - Computers & Mathematics with Applications, 2022 - Elsevier
A reduced order model (ROM) method based on proper orthogonal decomposition (POD) is
analyzed for convection-diffusion-reaction equations. The streamline-upwind Petrov …

Error analysis of proper orthogonal decomposition stabilized methods for incompressible flows

J Novo, S Rubino - SIAM Journal on Numerical Analysis, 2021 - SIAM
Proper orthogonal decomposition (POD) stabilized methods for the Navier--Stokes
equations are considered and analyzed. We consider two cases: the case in which the …

Numerical analysis of a projection-based stabilized POD-ROM for incompressible flows

S Rubino - SIAM Journal on Numerical Analysis, 2020 - SIAM
In this paper, we propose a new stabilized projection-based proper orthogonal
decomposition reduced order model (POD-ROM) for the numerical simulation of …

Reduced order model closures: A brief tutorial

W Snyder, C Mou, H Liu, O San, R DeVita… - Recent Advances in …, 2022 - Springer
In this paper, we present a brief tutorial on reduced order model (ROM) closures. First, we
carefully motivate the need for ROM closure modeling in under-resolved simulations. Then …