Results 11 to 20 of about 1,846,403 (331)

3D Airborne EM Forward Modeling Based on Time-Domain Spectral Element Method

open access: yesRemote Sensing, 2021
Airborne electromagnetic (AEM) method uses aircraft as a carrier to tow EM instruments for geophysical survey. Because of its huge amount of data, the traditional AEM data inversions take one-dimensional (1D) models.
Changchun Yin   +6 more
doaj   +1 more source

断层位置对三维盆地地震效应的影响

open access: yesDizhen xuebao, 2022
采用谱元法模拟了盆地模型和一维水平成层模型的地震动强度和放大系数的分布特征,探究了直下型断层与盆地的相对位置对盆地地震效应的影响。结果显示:盆地地震动受断层位置的影响显著,特别是当断层邻近且平行于盆地边缘时,盆地地表地震动的边缘效应更加明显,强烈地震动区域的位置随断层位置的移动而改变明显;不同分量放大系数的分布特征差别显著,平行断层分量和垂直分量的显著放大区域主要分布于断层地表迹线两侧或紧邻迹线的盆地边缘,而垂直断层分量主要位于盆地内部,其放大系数最小;断层沿盆地短边边缘破裂时的地震动强度和放大系数最大,
Yanyan Yu   +3 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

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

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

Legendre spectral element method for solving sine-Gordon equation

open access: yesAdvances in Difference Equations, 2019
In this paper, we study the Legendre spectral element method for solving the sine-Gordon equation in one dimension. Firstly, we discretize the equation by Legendre spectral element in space and then discretize the time by the second-order leap-frog ...
Mahmoud Lotfi, Amjad Alipanah
doaj   +1 more source

Spectral Element Method for the Elastic/Acoustic Waveguide Problem in Anisotropic Metamaterials

open access: yesIEEE Access, 2021
Waveguide problems are fundamental to elastic and acoustic wave propagation, where we are interested in finding the propagation constants and modal patterns of waveguide modes.
An Qi Ge   +3 more
doaj   +1 more source

A Review: Applications of the Spectral Finite Element Method

open access: yesArchives of Computational Methods in Engineering, 2023
The Spectral Finite Element Technique (SFEM) has Several Applications in the Sciences, Engineering, and Mathematics, which will be Covered in this Review Article.
M. Hafeez, M. Krawczuk
semanticscholar   +1 more source

A 2.5D BEM-FEM using a spectral approach to study scattered waves in fluid–solid interaction problems [PDF]

open access: yes, 2019
42nd International Conference on Boundary Elements and other Mesh Reduction Methods, BEM/MRM 2019; ITeCons-University of Coimbra, Coimbra; Portugal; 2 July 2019 through 4 July 2019.
Cruz Muñoz, Juan   +3 more
core   +1 more source

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