Listar GI-GMNE - Congresos, conferencias, etc. por título
Mostrando ítems 50-69 de 78
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Galerkin, Least-Squares and GLS numerical approaches for advective-diffussive transport problems in engineering
(The International Center of Numerical Methods in Engineering, 2000)[Abstract] In this paper, a study of three FE numerical formulations (Galerkin, Least Squares and Galerkin/Least Squares) applied to the convective-diffuse problem is presented, focusing our attention in high Péclet-number ... -
High order shape design sensitivity: an unified approach
(Centro Internacional de Métodos Numéricos en Ingeniería, 1998)[Abstract] Three basic analytical approaches have been proposed for the calculation of sensitivity derivatives in shape optimization problems. The first approach is based on differentiation of the discretized equations. ... -
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 ... -
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 ... -
Meshless methods for potential problems in electrical engineering applications
(Elsevier, 1999)[Abstract] In some problems in engineering applications, the mesh generation process represents one of the big challenges when numerical methods such as finite elements, finite differences or boundary elements are applied. ... -
Métodos numéricos de partículas para la simulación de problemas en dinámica de fluídos
(2004)[Resumen] En este artículo se propone una formulación numérica sin malla de tipo Galerkin basada en el método de Smoothed Particle Hydrodynamics (SPH) con aproximación de mínimos cuadrados móviles, y su aplicación a ... -
Minimum weight with stress constraints topology optimization
(2003)[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 ... -
Modelización numérica de problemas de potenciales transferidos por redes de tierra mediante el método de los elementos de contorno
(2004)[Resumen] El análisis y diseño de tomas de tierra en subestaciones eléctricas requiere el cálculo de la distribución de los niveles de potencial sobre la superficie del terreno y la resistencia equivalente de la red de ... -
Modelling Free-surface flows by a Galerkin based SPH formulation
(2003)[Abastract] An algorithm based on Moving Least Squares Particle Hydrodynamics (MLSPH) to solve free surface flow is presented. MLS shape functions remarkably improve stability and accuracy of standard SPH algorithms, ... -
Una nueva formulación de elementos finitos para la optimización topológica de estructuras basada en la minización del peso con restricciones en tensión
(2005)En este artículo se presenta una nueva formulación de Elementos Finitos para la Optimización Topológica de Estructuras. Los modelos tradicionalmente propuestos hasta el momento se basan en optimizar la distribución de ... -
Numerical approaches for grounding installations in uniform and stratified soils
(2002)[Abstract] This paper summarizes the main numerical approaches based on the BEM developed by the authors in the last years for the grounding analysis of electrical installations in uniform and layered soils. -
Numerical computation of grounding grids
(Asociación Argentina de Mecánica Computacional, 1995)[Abstract] Grounding systems are designed to preserve human safety and grant the integrity of equipments under fault conditions. To achieve these goals, the equivalent electrical resistance of the system must be low ... -
Numerical modelling for grounding grids in high-performance parallel computers
(WIT, 2000)[Abstract] The design of safe grounding systems in electrical installations is essential to assure the security of the persons, the protection of the equipment and the continuity of the power supply [1,2]. In order to ... -
On the anomalous asymptotic performance of the regular computer methods for grounding analysis
(2003)[Abstract] Grounding systems are designed to guarantee personal security, protection of equipments and continuity of power supply. Hence, engineers must compute the equivalent resistance of the system and the potential ... -
On the intrinsic instability of the advective-diffusive transport
(2004)[Abstract] A new theory for the advective–diffusive phenomenon is described in this study and the causes for the failure of the conventional numerical methods for this problem are investigated. It is shown that Fick’s law ... -
On the resolution of the viscous incompressible flow for various SUPG finite element formulations
(The International Center of Numerical Methods in Engineering, 2000)[Abstract] A Finite Element based program has been released to solve the steady 2D Navier- Stokes equations. The mixed-variable algorithm is used as a first approach to solve the differential problem. In order to reduce ... -
Optimización de torres de alta tensión mediante un método de programación lineal secuencial con búsqueda unidireccional cuadrática
(2005)En este trabajo se presenta un sistema de optimización estructural desarrollado específicamente para una determinada familia de problemas. El sistema permite parametrizar automáticamente torres de alta tensión de tipos ... -
Optimización topológica de estructuras: una formulación de mínimo peso con restricciones en tensión
(2002)[Resumen] La optimización de formas y dimensiones en ingeniería estructural se plantea habitualmente mediante formulaciones de mínimo peso con restricciones impuestas que limitan los valores admisibles de tensiones y ... -
Parallel computing aided design of earthing systems for electrical substations in non homogeneous soil models
(IEEE Computer Society, 2000)[Abstract] An accurate design of grounding systems is essential to assure the safety of the persons, to protect the equipment and to avoid interruptions in the power supply. In order to attain these targets, the equivalent ... -
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 ...