Results 1 to 10 of about 539,151 (294)

The ultraspherical spectral element method [PDF]

open access: yesJournal of Computational Physics, 2021
We introduce a novel spectral element method based on the ultraspherical spectral method and the hierarchical Poincaré-Steklov scheme for solving second-order linear partial differential equations on polygonal domains with unstructured quadrilateral or triangular meshes.
Fortunato, Daniel   +2 more
openaire   +5 more sources

Photonic Nanojet Analysis by Spectral Element Method

open access: yesIEEE Photonics Journal, 2014
Although it is known that the spectral element method (SEM) has both high accuracy and a lower computational cost when compared with finite-element or finite-difference methods, the SEM is not widely utilized in the modeling of boundary value problems in
I. Mahariq   +3 more
doaj   +4 more sources

An efficient spectral element method for two-dimensional magnetotelluric modeling

open access: yesFrontiers in Earth Science, 2023
We introduce a new efficient spectral element approach to solve the two-dimensional magnetotelluric forward problem based on Gauss–Lobatto–Legendre polynomials.
Xiaozhong Tong   +4 more
doaj   +1 more source

Investigation and Analysis of Acoustojets by Spectral Element Method

open access: yesMathematics, 2022
In this study, acoustic wave scattering in a homogeneous media by an obstacle is examined in the case of plane wave excitation and the formation of acoustic jets is explored.
Ibrahim Mahariq   +5 more
doaj   +1 more source

A Comparative Study of Finite Element Method and Hybrid Finite Element Method–Spectral Element Method Approaches Applied to Medium-Frequency Transformers with Foil Windings

open access: yesJ, 2023
This study aims to improve the computational efficiency of the frequency domain analysis of medium-frequency transformers (MFTs) with the presence of large clearance distances and fine foil windings.
Siamak Pourkeivannour   +4 more
doaj   +1 more source

Efficient SVV stabilized triangular spectral element methods for incompressible flows of high Reynolds numbers

open access: yesAdvances in Aerodynamics, 2022
In this paper, we propose a spectral vanishing viscosity method for the triangular spectral element computation of high Reynolds number incompressible flows.
Lizhen Chen, Tao Tang, Chuanju Xu
doaj   +1 more source

Splitting spectral element method for fractional reaction-diffusion equations

open access: yesJournal of Algorithms & Computational Technology, 2020
In this paper, we propose a second-order operator splitting spectral element method for solving fractional reaction-diffusion equations. In order to achieve a fast second-order scheme in time, we decompose the original equation into linear and nonlinear ...
Qi Li, Fangying Song
doaj   +1 more source

Legendre spectral element method for solving Volterra-integro differential equations

open access: yesResults in Applied Mathematics, 2020
In this article, we present a spectral element method for numerical solution of linear Volterra integro-differential equations with boundary conditions. First, we obtain discrete form of the problem using the spectral element method.
Mahmoud Lotfi, Amjad Alipanah
doaj   +1 more source

Design of 3D SAW Filters Based on the Spectral Element Method

open access: yesIEEE Access, 2023
Surface acoustic wave (SAW) devices are key components in 5G communication systems, and the design of SAW filters with high frequency, high performance and high reliability is a necessary and challenging task. In this work, SAW resonators with $LiNbO_{3}
Yiwen Yao   +4 more
doaj   +1 more source

Mesh update techniques for free-surface flow solvers using spectral element method [PDF]

open access: yes, 2007
This paper presents a novel mesh-update technique for unsteady free-surface Newtonian flows using spectral element method and relying on the arbitrary Lagrangian--Eulerian kinematic description for moving the grid.
A.A. Johnson   +15 more
core   +2 more sources

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