Global ETD Search
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Showing 1 to 10 of 10 for “"Error Indicator"”.
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Data Structure and Error Estimation for an Adaptive <i>p</i>-Version Finite Element Method in 2-D and 3-D Solids
… can reduce the magnitude of discretization error to the desired accuracy with minimum computational cost and computer resources. This study aims to 1) develop an efficient <i>p</i>-refinement procedure with a non-uniform <i>p</i> analysis capability for solving 2-D and 3-D elastostatic …
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Development of Surrogate Model for FEM Error Prediction using Deep Learning
… using deep learning (DL), to predict solution error for a given model with a given mesh. For this research, we have taken the von Mises stress contours and have predicted two different types of error indicators contours, namely (i) von Mises error indicator (MISESERI), and (ii) energy density …
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Formulação hierárquica do Método dos Elementos Finitos: refinamento auto-adaptativo versão P aplicado a problemas de elasticidade
… of the Finite Element Method for a-posteriori error analysis and automatic refinement, in the resolution of linear static elasticity problems. Utilizing the hierarchical formulation of the method, the selective polynomial refinement is performed by means of iterative procedures, according to an …
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Adaptive stable finite-element methods for the compressible Navier-Stokes equations
… of nodes to the mesh in regions determined by an error indicator (h - refinement ) and the local repositioning of existing nodes using the value of this error indicator across neighbouring elements (r - refinement). As well as considering these adaptive techniques separately, we introduce an …
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Efficient finite-volume schemes for magnetohydrodynamic simulations in solar physics
… an adaptively-refined table for the EOS. Our error indicator facilitates a significant enhancement of the codes' efficiencies by using locally-adapted grids. We introduce a new limiter (DEOmod) for linear reconstructions on unstructured triangular grids in 2d that represents a clear …
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Use of hierarchical elements in isoparametric finite element procedures
… a method for calculating a useful element-level error indicator. The one-dimensional model problem used is of a form which yields non-zero off-diagonal hierarchical stiffness terms; a situation typical in cases of higher dimension. Consequently, this work provides a basis for extension of the …
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Enriching low-order finite elements by interpolation covers
… adaptive interpolation procedure where an error indicator is introduced to apply appropriate local cover orders at the finite element mesh nodes to efficiently improve the accuracy of the solution. The power of the adaptivity is illustrated by two- and three-dimensional simulation examples.
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Unified Multilevel Adaptive Finite Element Methods for Elliptic Problems
… resulting change in the solution is used as an error indicator to determine which triangles to divide. The multigrid iteration uses a red-black Gauss-Seidel relaxation in which the black relaxations are used only locally. The grid transfers use the change between the nodal and hierarchical …
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A time-spectral hybridizable discontinuous Galerkin method for periodic flow problems
… Time-Spectral residual to form an inexpensive error indicator. Having selected a set of frequencies, the accuracy of the Time-Spectral solution is greatly improved by using optimally selected collocation points in time. For multi-domain problems such as turbomachinery flows, an anti-aliasing …
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Parametric model order reduction development for Navier-Stokes equations from 2D chaotic to 3D turbulent flow problems
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2024-03-01 without embargo terms