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 …

An overview of the discontinuous Petrov Galerkin method

LF Demkowicz, J Gopalakrishnan - Recent Developments in …, 2014 - Springer
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A class of discontinuous Petrov–Galerkin methods. II. Optimal test functions

L Demkowicz, J Gopalakrishnan - Numerical Methods for …, 2011 - Wiley Online Library
We lay out a program for constructing discontinuous Petrov–Galerkin (DPG) schemes
having test function spaces that are automatically computable to guarantee stability. Given a …

[HTML][HTML] Breaking spaces and forms for the DPG method and applications including Maxwell equations

C Carstensen, L Demkowicz… - Computers & Mathematics …, 2016 - Elsevier
Abstract Discontinuous Petrov–Galerkin (DPG) methods are made easily implementable
using “broken” test spaces, ie, spaces of functions with no continuity constraints across mesh …

Robust Variational Physics-Informed Neural Networks

S Rojas, P Maczuga, J Muñoz-Matute, D Pardo… - Computer Methods in …, 2024 - Elsevier
We introduce a Robust version of the Variational Physics-Informed Neural Networks method
(RVPINNs). As in VPINNs, we define the quadratic loss functional in terms of a Petrov …

Hybridizable discontinuous Galerkin methods for partial differential equations in continuum mechanics

NC Nguyen, J Peraire - Journal of Computational Physics, 2012 - Elsevier
We present hybridizable discontinuous Galerkin methods for solving steady and time-
dependent partial differential equations (PDEs) in continuum mechanics. The essential …

An analysis of the practical DPG method

J Gopalakrishnan, W Qiu - Mathematics of Computation, 2014 - ams.org
We give a complete error analysis of the Discontinuous Petrov Galerkin (DPG) method,
accounting for all the approximations made in its practical implementation. Specifically, we …

Adaptive Petrov--Galerkin methods for first order transport equations

W Dahmen, C Huang, C Schwab, G Welper - SIAM journal on numerical …, 2012 - SIAM
We propose stable variational formulations for certain linear, unsymmetric operators with first
order transport equations in bounded domains serving as the primary focus of this paper …

High-order implicit hybridizable discontinuous Galerkin methods for acoustics and elastodynamics

NC Nguyen, J Peraire, B Cockburn - Journal of Computational Physics, 2011 - Elsevier
We present a class of hybridizable discontinuous Galerkin (HDG) methods for the numerical
simulation of wave phenomena in acoustics and elastodynamics. The methods are fully …

A class of discontinuous Petrov–Galerkin methods. Part IV: The optimal test norm and time-harmonic wave propagation in 1D

J Zitelli, I Muga, L Demkowicz, J Gopalakrishnan… - Journal of …, 2011 - Elsevier
The phase error, or the pollution effect in the finite element solution of wave propagation
problems, is a well known phenomenon that must be confronted when solving problems in …