Model order reduction in fluid dynamics: challenges and perspectives

T Lassila, A Manzoni, A Quarteroni, G Rozza - Reduced Order Methods for …, 2014 - Springer
This chapter reviews techniques of model reduction of fluid dynamics systems. Fluid systems
are known to be difficult to reduce efficiently due to several reasons. First of all, they exhibit …

Spectral tensor-train decomposition

D Bigoni, AP Engsig-Karup, YM Marzouk - SIAM Journal on Scientific …, 2016 - SIAM
The accurate approximation of high-dimensional functions is an essential task in uncertainty
quantification and many other fields. We propose a new function approximation scheme …

A numerical study on hydraulic fracturing problems via the proper generalized decomposition method

D Wang, S Zlotnik, P Díez, H Ge… - Computer Modeling in …, 2020 - ingentaconnect.com
The hydraulic fracturing is a nonlinear, fluid-solid coupling and transient problem, in most
cases it is always time-consuming to simulate this process numerically. In recent years …

Tensor numerical methods for multidimensional PDEs: theoretical analysis and initial applications

BN Khoromskij - ESAIM: Proceedings and Surveys, 2015 - esaim-proc.org
We present a brief survey on the modern tensor numerical methods for multidimensional
stationary and time-dependent partial differential equations (PDEs). The guiding principle of …

Low-rank methods for high-dimensional approximation and model order reduction

A Nouy - Model Reduction and Approximation: Theory and …, 2017 - books.google.com
Tensor methods are among the most prominent tools for the numerical solution of high-
dimensional problems where functions of multiple variables have to be approximated. These …

Nonintrusive proper generalised decomposition for parametrised incompressible flow problems in OpenFOAM

V Tsiolakis, M Giacomini, R Sevilla, C Othmer… - Computer physics …, 2020 - Elsevier
The computational cost of parametric studies currently represents the major limitation to the
application of simulation-based engineering techniques in a daily industrial environment …

An efficient non-intrusive reduced basis model for high dimensional stochastic problems in CFD

D Kumar, M Raisee, C Lacor - Computers & Fluids, 2016 - Elsevier
The major challenge industrial applications of uncertainty quantification (UQ) are facing, is
the curse of dimensionality as a result of a large number of uncertainties. In this work, an …

Stochastic domain decomposition based on variable-separation method

L Chen, Y Chen, Q Li, Z Zhang - Computer Methods in Applied Mechanics …, 2024 - Elsevier
This work proposes a stochastic domain decomposition method for solving steady-state
partial differential equations (PDEs) with random inputs. Specifically, based on the efficiency …

Reduced-order modeling of neutron transport eigenvalue problems separated in energy by Proper Generalized Decomposition

KA Dominesey, W Ji - Journal of Computational Physics, 2023 - Elsevier
In this article, we develop and validate an a priori Reduced-Order Model (ROM) of neutron
transport separated in energy by Proper Generalized Decomposition (PGD) as applied to …

A proper generalized decomposition based Padé approximant for stochastic frequency response analysis

GY Lee, YH Park - International Journal for Numerical Methods …, 2021 - Wiley Online Library
This article presents a proper generalized decomposition (PGD) based Padé approximant
for efficient analysis of the stochastic frequency response. Due to the high nonlinearity of the …