نتایج جستجو برای: spectral element method

تعداد نتایج: 1898930  

Journal: :SIAM Journal on Numerical Analysis 2022

Related DatabasesWeb of Science You must be logged in with an active subscription to view this.Article DataHistorySubmitted: 1 March 2021Accepted: 27 August 2021Published online: 10 February 2022Keywordsspectral element method, Gauss--Lobatto quadrature, superconvergence, wave equation, parabolic equations, linear Schrödinger equationAMS Subject Headings65M60, 65M15, 65M06Publication DataISSN (...

1998
Francis X. Giraldo

Abstract. The purpose of this paper is twofold: to give a brief yet comprehensive description of the spectral element and semi-Lagrangian methods, and to introduce a new method arrived at by fusing both of these impressive methods. The practical aspects of both methods are described in detail by their implementation on the 2D shallow water equations. These equations have been used customarily t...

Journal: :Journal of Computational and Applied Mathematics 2012

2009
Misun Min Taehun Lee

We present a spectral-element discontinuous Galerkin lattice Boltzmann method for solving single-phase incompressible flows. Decoupling the collision step from the streaming step offers numerical stability at high Reynolds numbers. In the streaming step, we employ high-order spectral-element discretizations using a tensor product basis of one-dimensional Lagrange interpolation polynomials based...

Journal: :J. Sci. Comput. 2013
Jing An Jie Shen

We develop an efficient spectral-element method for computing the transmission eigenvalues in two-dimensional radially stratified media. Our method is based on a dimension reduction approach which reduces the problem to a sequence of one-dimensional eigenvalue problems that can be efficiently solved by a spectral-element method. We provide an error analysis which shows that the convergence rate...

Journal: :Science 2002
Dimitri Komatitsch Jeroen Ritsema Jeroen Tromp

The propagation of seismic waves through Earth can now be modeled accurately with the recently developed spectral-element method. This method takes into account heterogeneity in Earth models, such as three-dimensional variations of seismic wave velocity, density, and crustal thickness. The method is implemented on relatively inexpensive clusters of personal computers, so-called Beowulf machines...

1999
C. Mavriplis

The Nonconforming Spectral Element Method (NSEM) solves PDEs in complex geometries with high accuracy, however, it is an expensive method. Since parallel computation is eeective in decreasing CPU time, a parallel algorithm for the NSEM is presented. Implementations on SGI Power Challenge using MPI are evaluated in terms of measured speedup and parallel eeciency for schemes of one element and mu...

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