Results 51 to 60 of about 734 (166)

Extended hybridizable discontinuous Galerkin method

open access: yes, 2023
This thesis proposes a new numerical technique: the eXtended Hybridizable Discontinuous Galerkin (X-HDG) Method, to efficiently solve problems including moving boundaries and interfaces. It aims to outperform available methods and improve the results by inheriting favored properties of Discontinuous Galerkin (HDG) together with an explicit interface ...
openaire   +4 more sources

High Order ADER Schemes for Continuum Mechanics

open access: yesFrontiers in Physics, 2020
In this paper we first review the development of high order ADER finite volume and ADER discontinuous Galerkin schemes on fixed and moving meshes, since their introduction in 1999 by Toro et al.
Saray Busto   +4 more
doaj   +1 more source

Local Discontinuous Galerkin Methods Coupled with Implicit Integration Factor Methods for Solving Reaction-Cross-Diffusion Systems

open access: yesDiscrete Dynamics in Nature and Society, 2016
We present a new numerical method for solving nonlinear reaction-diffusion systems with cross-diffusion which are often taken as mathematical models for many applications in the biological, physical, and chemical sciences.
Na An   +3 more
doaj   +1 more source

Shock capturing for discontinuous galerkin methods

open access: yes, 2023
Aquesta tesi doctoral proposa formulacions de Galerkin Discontinu (DG) d’alt ordre per la captura de shocks, obtenint alhora solucions altament precises per problemes de flux compressible. En les últimes dècades, la investigació en els mètodes de DG ha estat en constant creixement.
openaire   +3 more sources

The Time Discontinuous H1-Galerkin Mixed Finite Element Method for Linear Sobolev Equations

open access: yesDiscrete Dynamics in Nature and Society, 2015
We combine the H1-Galerkin mixed finite element method with the time discontinuous Galerkin method to approximate linear Sobolev equations. The advantages of these two methods are fully utilized.
Hong Yu, Tongjun Sun, Na Li
doaj   +1 more source

On Discontinuous Galerkin Methods for Elliptic Problems with Discontinuous Coefficients [PDF]

open access: yesComputational Methods in Applied Mathematics, 2003
AbstractDiscontinuous Galerkin methods for elliptic problems with discontinuous coefficients are discussed. First the error bound of the methods is analyzed. Then a multilevel additive Schwarz preconditioner for one of the discrete problems is designed and analyzed.
openaire   +2 more sources

DGFS-BE Solver: An open-source Discontinuous Galerkin Fast Spectral Solver for the full Boltzmann equation

open access: yesSoftwareX
This paper introduces the DGFS-BE solver, an open-source Discontinuous Galerkin Fast Spectral solver designed to address the complexities of the Boltzmann equation, a fundamental equation in kinetic theory.
Evgeniia Vorozhbit   +4 more
doaj   +1 more source

Gaussian quadrature rules and A-stability of Galerkin schemes for ODE

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2003
The A-stability properties of continuous and discontinuous Galerkin methods for solving ordinary differential equations (ODEs) are established using properties of Legendre polynomials and Gaussian quadrature rules. The influence on the A-stability of the
Ali Bensebah   +2 more
doaj   +1 more source

Error Estimates on Hybridizable Discontinuous Galerkin Methods for Parabolic Equations with Nonlinear Coefficients

open access: yesAdvances in Mathematical Physics, 2017
HDG method has been widely used as an effective numerical technique to obtain physically relevant solutions for PDE. In a practical setting, PDE comes with nonlinear coefficients.
Minam Moon, Hyung Kyu Jun, Tay Suh
doaj   +1 more source

Convergence Analysis of H(div)-Conforming Finite Element Methods for a Nonlinear Poroelasticity Problem

open access: yesDiscrete Dynamics in Nature and Society, 2020
In this paper, we introduce and analyze H(div)-conforming finite element methods for a nonlinear model in poroelasticity. More precisely, the flow variables are discretized by H(div)-conforming mixed finite elements, while the elastic displacement is ...
Yuping Zeng, Zhifeng Weng, Fen Liang
doaj   +1 more source

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