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Showing 1 to 11 of 11 for “"spectral elements"”.
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Fast Solvers for Models of Fluid Flow with Spectral Elements
… preconditioner in numerical simulations using a spectral element discretization. This work extends the use of Fast Diagonalization to steady convection-diffusion systems. We also extend the "least-squares commutator" preconditioner, originally developed for the finite element method, to a …
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Finite and Spectral Element Methods for Modeling Far-Field Underwater Explosion Effects on Ships
… model is using cavitating acoustic finite elements (CAFE) and more recently cavitating acoustic spectral elements (CASE). The use of spectral elements in CASE has shown to offer the greater accuracy and reduced computational expense when compared to traditional finite elements. However, …
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High Frequency Modeling and Experimental Analysis for Implementation of Impedance-based Structural Health Monitoring
… for impedance-based SHM in combination with spectral elements. When a three-layer spectral element representing a piezoceramic bonded to a base beam is used, the model can predict the large peaks in the impedance response due to resonances of the bonded active sensor. Parallel and series …
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Spectral Element Analysis of Bars, Beams, and Levy Plates
… with the development and coding of a Levy-type spectral plate element to analyze the harmonic response of simply supported plates in the mid to high frequency range. The development includes the governing PDE, displacement field, shape function, and dynamic stiffness matrix. A two DOF spectral …
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Closed form solution of the wave equation for piles
… form solution. To avoid difficulties due to spectral elements in the boundary conditions, a strain-based model of the radiation dampening in the pile toe was developed. The solution technique uses a Laplace transform of the semi-infinite pile problem for 0 < t < L/c (or for a time duration 0 …
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Elucide
… compositional methods that are central to the spectral approach to composition, established by such composers as Gérard Grisey, Tristan Murail, and Hugues Dufourt. This musical genre is characterized by a focus on the acoustic properties of sound, a concern that is typically reflected both in …
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Computationally-effective Modeling of Far-field Underwater Explosion for Early-stage Surface Ship Design
… more efficient. First, a Cavitating Acoustic Spectral Element approach which has shown computational advantages in UNDEX problems, but not systematically assessed in total ship application, is used to model the fluid. The use of spectral elements shows greater structural response accuracy and …
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Development of a high-order accurate reservoir simulator using spectral element method
… a fully coupled implicit Discontinuous Galerkin spectral element method (DGSEM) is proposed to solve the two non-linear governing equations in pressure and saturation. The proposed DGSEM scheme is capable of using high-order spectral elements and controlled amount of artificial diffusion to …
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A Story of the Young Adult Story of Children's and Young Adult Literature, Culture, and Media
… fictionalized instances and haunting and spectral elements. This research demonstrates that the 1990s through 2020s generation were not—and are not—voiceless or mere passive recipients of their circumstances without agency, but active, central, and entangled participants in questioning, …
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A Hybrid Spectral-Element / Finite-Element Time-Domain Method for Multiscale Electromagnetic Simulations
<p>In this study we propose a fast hybrid spectral-element time-domain (SETD) / finite-element time-domain (FETD) method for transient analysis of multiscale electromagnetic problems, where electrically fine structures with details much smaller than a typical wavelength and electrically coarse …
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Nonlinear fluid dynamics in complex geometries
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2023-09-01 without embargo terms