Non Structured Meshes
Mostrando 1-7 de 7 artigos, teses e dissertações.
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1. Estimativa de erros no cálculo de gradientes em malhas de Voronoi / Estimation error in the calculation of gradients in Voronoi meshes
O presente trabalho propõe analisar metodologias para o cálculo do gradiente em malhas não-estruturadas do tipo Voronoi que são utilizadas no método de Volumes Finitos. Quatro metodologias para o cálculo do gradiente são testadas e comparadas com soluções analíticas. As técnicas utilizadas são: Método do Balanço de Forças, Método do Mínimo R
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 02/03/2012
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2. Development of a high-order finite volume method with multiblock partition techniques
This work deals with a new numerical methodology to solve the Navier-Stokes equations based on a finite volume method applied to structured meshes with co-located grids. High-order schemes used to approximate advective, diffusive and non-linear terms, connected with multiblock partition techniques, are the main contributions of this paper. Combination of the
Brazilian Journal of Chemical Engineering. Publicado em: 2012-03
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3. Ferramentas computacionais para a anÃlise de dutos com defeitos de corrosÃo
Pipelines are one of the safest means for transport of petroleum and gas, and the one with the smallest risk to the environment. They also possess high efficiency and productivity. In spite of their exceptional capabilities, they are also a great source of concern of the petroleum companies, since they can be subjected to several types defects, in particular
Publicado em: 2008
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4. Numerical investigation of the flow around a stationary cylinder. / Estudo numérico do escoamento ao redor de um cilindro fixo.
In this work, the incompressible flow around a stationary cylinder is investigated by using the Finite Element Method. Two-dimensional simulations in time domain have been carried out, with Reynolds number varying from 100 to 600, using non-structured meshes with triangular elements. The aim of this work is to analyze the efficiency of Penalty Methods, which
Publicado em: 2007
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5. Complexity control in the topology optimization of continuum structures
A general mesh independent filter as a mean to control the complexity of topology optimization designed structures is discussed. A new mesh-independent filter, applied over the move-limits of the sequential linear programming is proposed, and it is shown that its use alleviates common problems in the continuum topology optimization, like checkerboarding, mes
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2003-09
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6. Formulação P do metodo de elementos finitos em problemas de elasticidade linear e não-linear com malhas 3D e em metodos multigrid algebricos
The main purpose of this work is to develop and implement (in C++ language) the p-version of the Finite Element Method (FEM) applied to linear and non-linear structural elastic problems with 3D non-structured meshes. To achieve this goal, we conduct a previous study which compares some sets of triangular and tetrahedral hierarchical basis functions available
Publicado em: 2002
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7. Metodos iterativos e multigrid adaptaveis em malhas não estruturadas
This work presents direct, iterative and multigrid methods for solving systems of equations obtained by means of the finite element method applied to linear elliptic problems, considering two and three dimensional elastic examples. Adaptive analysis aspects are also discussed by taking an error estimator and some stress recovery procedures. All the algorithm
Publicado em: 1996