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Title: The DPG Method for the Convection-Reaction Problem, Revisited

Journal Article · · Computational Methods in Applied Mathematics
ORCiD logo [1];  [2];  [3]
  1. Univ. of Texas, Austin, TX (United States)
  2. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
  3. Univ. of Texas, Austin, TX (United States); Basque Center for Applied Mathematics, Bilbao (Spain)

In this work, we study both conforming and non-conforming versions of the practical DPG method for the convection-reaction problem. We determine that the most common approach for DPG stability analysis – construction of a local Fortin operator – is infeasible for the convection-reaction problem. We then develop a line of argument based on a direct proof of discrete stability; we find that employing a polynomial enrichment for the test space does not suffice for this purpose, motivating the introduction of a (two-element) subgrid mesh. The argument combines mathematical analysis with numerical experiments.

Research Organization:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA); USDOE Laboratory Directed Research and Development (LDRD) Program; National Science Foundation (NSF); European Research Council (ERC)
Grant/Contract Number:
NA0003525; 218322; 1819101; 101017984
OSTI ID:
1883191
Report Number(s):
SAND2022-7111J; 706744
Journal Information:
Computational Methods in Applied Mathematics, Vol. 23, Issue 1; ISSN 1609-4840
Publisher:
de GruyterCopyright Statement
Country of Publication:
United States
Language:
English

References (22)

A Spacetime DPG Method for the Schrödinger Equation journal January 2017
(Parametrized) First Order Transport Equations: Realization of Optimally Stable Petrov--Galerkin Methods journal January 2019
A tent pitching scheme motivated by Friedrichs theory journal September 2015
Construction of DPG Fortin operators revisited journal December 2020
A Unified Discontinuous Petrov--Galerkin Method and Its Analysis for Friedrichs' Systems journal January 2013
A converse to Fortin's Lemma in Banach spaces journal November 2016
Least-Squares Finite Element Methods and Algebraic Multigrid Solvers for Linear Hyperbolic PDEs journal January 2004
A DPG-based time-marching scheme for linear hyperbolic problems journal January 2021
Adaptive Strategies for Transport Equations journal June 2019
Equivalence between the DPG method and the exponential integrators for linear parabolic problems journal March 2021
Breaking spaces and forms for the DPG method and applications including Maxwell equations journal August 2016
On the stability of DPG formulations of transport equations journal September 2017
A class of discontinuous Petrov-Galerkin methods. II. Optimal test functions journal October 2010
Construction of DPG Fortin operators for second order problems journal October 2017
Robust DPG Method for Convection-Dominated Diffusion Problems journal January 2013
An adaptive least-squares FEM for the Stokes equations with optimal convergence rates journal May 2016
A class of discontinuous Petrov–Galerkin methods. Part I: The transport equation journal April 2010
An analysis of the practical DPG method journal May 2013
Low-Order Discontinuous Petrov--Galerkin Finite Element Methods for Linear Elasticity journal January 2016
Discontinuous Galerkin Methods for Friedrichs' Systems. I. General theory journal January 2006
Adaptive anisotropic Petrov–Galerkin methods for first order transport equations journal October 2018
Some Trace Theorems in Anisotropic Sobolev Spaces journal May 1992

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