Listar Grupo de Métodos Numéricos na Enxeñería por data de publicación
Mostrando ítems 41-60 de 133
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Stabilization of numerical formulations for convective-diffussive transport problems
(The International Center of Numerical Methods in Engineering, 2000)[Abstract] Numerical simulation in Fluid Mechanics is an extremely difficult task, wich complexity increases exponentially as the velocity of the fluid becomes higher. In particular, it is know that serious troubles are ... -
A unified approach for high order sensitivity analysis
(Computational Mechanics Publications, 2001)[Abstract] Many engineering problems require solving PDEs by means of numerical methods (type FEM/BEM) which sensivity analysis entails taking derivatives of functions defined through integration. In sizing optimization ... -
Meshless methods applied to potential flow problems
(Elsevier, 2001)[Abstract] In this paper we discuss some of the meshless approaches that have been recently proposed for solving boundary value problems. Several functional approximations and different integration schemes are studied. In ... -
Petrov-Galerkin and Galerkin/Least Squares stabilized approaches for advectivediffusive transport problems
(Fundacja Zdrowia Publicznego "Vesalius", 2001)[Abstract] The Finite Element method with a Galerkin type weighting is a straight-forward weighted residual method that has been sucessfuly used in many engineering applications, specially in Solid Mechanics. However, this ... -
Computer analysis of earthing systems in horizontally or vertically layered soils
(Elsevier, 2001)[Abstract] The main objectives of grounding systems are to guarantee the personal safety, the equipment protection and the continuity of the power supply. To attain these goals, the potential distribution on the earth ... -
Development of integration schemes for meshless numerical approaches based on the SPH method
(The Institute of Mathematics and its Applications, 2001)[Abstract] In this paper we discuss some of the meshless formulations that have been recently proposed for solving Boundary Value Problems. Several functional approximations are studied both, from a continuum and from a ... -
Stability analysis of BEM approximate solutions in grounding analysis
(Elsevier, 2001)[Abstract] In this paper we present a summary of the Boundary Element Method developed for the analysis of potential problems in the electrical engineering field. The numerical model proposed is shown as a general frame ... -
A massively parallel BEM numerical model for grounding analysis in layered soils
(Fundacja Zdrowia Publicznego "Vesalius", 2001)[Abstract] In the last years the authors have developed a numerical formulation based on the Boundary Element Method for the analysis of grounding systems embedded in uniform soils. This approach has been implemented in a ... -
An efficient MP algorithm for structural shape optimization problems
(Computational Mechanics Publications, 2001)[Abstract] Integral methods -such as the Finite Element Method (FEM) and the Boundary Element Method (BEM)- are frequently used in structural optimization problems to solve systems of partial differential equations. ... -
Cálculo de potenciales transferidos en grandes sistemas de redes de tierra de subestaciones eléctricas
(Departamento de Matemática Aplicada, Universidad de Salamanca, 2001)[Resumen] En este artículo se presenta el análisis mediante una formulación numérica de elementos de contorno de un problema común en la ingeniería eléctrica como es la existencia de potenciales transferidos en una instalación ... -
A general numerical model for grounding analysis in layered soils
(Elsevier, 2002)[Abstract] Safety of persons, protection and equipment and continuity of power supply are the main objectives of the grounding system of a large electrical installation. For its accurate design, it is essential to determine ... -
A 2D numerical model using finite volume method for sediment transport in rivers
(2002)[Abstract] The study of rivers as ecosystems has many fields of research, like the resolution and comprehension of flow and sediment transport phenomena. In this communication a 2D numerical model using the Finite Volume ... -
Una formulación SPH para problemas de flujo de fluídos en aplicacione sen la ingeniería
(2002)[Resumen] En este artículo estudiamos y comparamos a través de varios ejemplos, las principales formulaciones Smooth Hydrodynamics existentes en la bibliografía para resolver problemas de fluídos, especilamente los ... -
A minimum weight with stress constraints FEM approach for topology structural optimization problems
(2002)[Abstract] Sizing and shape structural optimization problems are normally stated in terms of a minimum weight approach with constraints that limit the maximum allowable stresses and displacements. However, topology ... -
Cálculo y diseño asistido por ordenador de tomas de tierra para subestaciones eléctricas
(2002)[Resumen] En este trabajo se presenta una formulaci´on num´erica para el c´alculo y dise˜no asistido por ordenador de tomas de tierra que es aplicable a un amplio rango de instalaciones el´ectricas reales. La formulaci´on ... -
Una formulación de elementos de contorno para el cálculo de potenciales transferidos por redes de tierra
(2002)[Resumen] El objetivo de este artículo es presentar una formulación numérica basada en el Método de Elementos de Contorno para abordar un problema común en la ingeniería eléctrica como la existencia de potenciales transferidos ... -
Topology Optimization of Structures: a minimum weight FEM approach
(2002)[Resumen] En general, los ingenieros tratan de diseñar piezas de peso mínimo que sean capaces de resistir las solicitaciones máximas que se puedan producir durante la vida útil de la pieza. Sin embargo, las formulaciones ... -
High performance computing for the analysis and postprocessing of earthing systems in layered soils
(2002)[Abstract] In this paper, we present a BEM formulation for the analysis and postprocessing of grounding systems embedded in layered soils, and we discuss the highligths of its implementation in a High-Performance Parallel ...