Results 31 to 40 of about 21,729 (184)

HP-multigrid as smoother algorithm for higher order discontinuous Galerkin discretizations of advection dominated flows. Part II. Optimization of the Runge-Kutta smoother [PDF]

open access: yes, 2011
Using a detailed multilevel analysis of the complete hp-Multigrid as Smoother algorithm accurate predictions are obtained of the spectral radius and operator norms of the multigrid error transformation operator.
Rhebergen, S., Vegt, J.J.W. van der
core   +8 more sources

Penyelesaian Numerik Advection Equation 1 Dimensi dengan EFG-DGM

open access: yesMedia Komunikasi Teknik Sipil, 2016
Differential equation can be used to model various phenomena in science and engineering. Numerical method is the most common method used in solving DE.
Kresno Wikan Sadono
doaj   +1 more source

A priori error analysis of space–time Trefftz discontinuous Galerkin methods for wave problems [PDF]

open access: yes, 2015
We present and analyse a space–time discontinuous Galerkin method for wave propagation problems. The special feature of the scheme is that it is a Trefftz method, namely that trial and test functions are solution of the partial differential equation to ...
F. Kretzschmar   +3 more
semanticscholar   +1 more source

Numerical modeling of seismic waves by discontinuous spectral element methods★

open access: yesESAIM: Proceedings and Surveys, 2018
We present a comprehensive review of Discontinuous Galerkin Spectral Element (DGSE) methods on hybrid hexahedral/tetrahedral grids for the numerical modeling of the ground motion induced by large earthquakes.
Antonietti Paola F.   +6 more
doaj   +1 more source

A unified time discontinuous Galerkin space‐time finite element scheme for non‐Newtonian power law models

open access: yesInternational Journal for Numerical Methods in Fluids, 2022
In this work, a stabilized time Discontinuous Galerkin, Space‐Time Finite Element (tDG‐ST‐FE) scheme is presented for discretizing time‐dependent viscous shear‐thinning fluid flow models, which exhibit a usual power‐law stress strain relation.
I. Toulopoulos
semanticscholar   +1 more source

High-order space-time finite element schemes for acoustic and viscodynamic wave equations with temporal decoupling [PDF]

open access: yes, 2014
Copyright @ 2014 The Authors. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.We revisit a method ...
Banks, HT   +9 more
core   +1 more source

Modelling of Generalised Thermoelastic Wave Propagation of Multilayer Material under Thermal Shock Behaviour

open access: yesShock and Vibration, 2017
This paper describes a time-discontinuous Galerkin finite element method (DGFEM-βc) for the generalised thermoelastic problem of multilayer materials subjected to a transient high-frequency heat source.
Pan Guo, Wen-Hua Wu, Jun Zhao
doaj   +1 more source

Hybrid methods for radiation transport using diagonally implicit Runge-Kutta and space-time discontinuous Galerkin time integration

open access: yesJournal of Computational Physics, 2019
In this work, we describe extensions of a hybrid method for time-dependent linear, kinetic radiation transport problems to high-order time integration schemes of the diagonally-implicit Runge–Kutta (DIRK) and space–time discontinuous Galerkin (STDG ...
M. Crockatt   +4 more
semanticscholar   +1 more source

High-Order Time Discretization of The Wave Equation by Nabla-P Scheme.*

open access: yesESAIM: Proceedings and Surveys, 2014
High-order Discontinuous Galerkin Methods (DGM) are now routinely used for simulation of wave propagation, especially for geophysical applications.
Barucq Hélène   +3 more
doaj   +1 more source

An Improved Subdomain Level Nonconformal Discontinuous Galerkin Time Domain (DGTD) Method for Materials With Full-Tensor Constitutive Parameters

open access: yesIEEE Photonics Journal, 2017
Ultrawideband simulation of negative refraction in bicrystals is important for the design optimization of devices involving such anisotropic media, but it is a nontrivial task, especially when low-order methods are utilized.
Qiang Ren, Qiwei Zhan, Qing Huo Liu
doaj   +1 more source

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