Listar GI-GMNE - Congresos, conferencias, etc. por título
Mostrando ítems 1-20 de 78
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A 2D numerical model for the transport of pollutants. The influence of Boundary Conditions
(Utah State University Extension, 1999)[Abstract] The pollutants transport phenomena in a 2D unsteady free surface flow has been studied. The weighted residual method has been used for the integration of the transport equations, appying the Galerkin formulation ... -
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 ... -
A BEM approach for grounding grid computation
(Computational Mechanics Publications, 1994)[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 ... -
A BEM formulation for computational design of grounding systems in stratified soils
(Centro Internacional de Métodos Numéricos en Ingeniería, 1998)[Abstract] Substation grounding design involves computing the equivalent resistance of the earthing system -for reasons of equipment protection-, as well as distribution of potentials on the earth surface -for reasons of ... -
A boundary element numerical approach for substation grounding in a two layer earth structure
(Tech Science Press, 1997)[Abstract] Analysis and design of substation grounding requires computing the distribution of potential on the earth surface (for reasons of human security) and the equivalent resistance of the earthing system (for reasons ... -
A computer aided design system for the analysis of transferred potentials in earthing systems
(2002)[Abstract] In this work we present a CAD system based on this BEM numerical formulation for the analysis of a common problem in electrical engineering practice, that is, the existence of transferred potentials in a ... -
A Finite element formulation for the resolution of the unsteady incompressible viscous flow for low Reynolds numbers
(International Association for Hydraulic Research, 1999)[Abstract] The following paper shows a Finite Element formulation for the resolution of the local and convective acceleration terms including- Navier-Stokes equations, which gives analytical response to the problem of ... -
A general formulation based on the boundary element method for the analysis of grounded instalations in layered soils
(Computational Mechanics Publications, 1998)[Abstract] The design of safe grounding systems requires computing the potential level distribution on the earth surface for reasons of human security, as well as the equivalent resistance of the earthing installation ... -
A general numerical model for grounding analysis in layered soils
(Civil-Comp, 2000)[Abstract] The safety of the persons, the protection of the equipment and the continuity of the power supply are the main objectives of the grounding system of a large electrical installation. For its accurate design, it ... -
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 ... -
A meshless numerical approach for the analysis of earthing systems in electrical installations
(Technische Universität München, 1999)[Abstract] In the last three decades some numerical formulations have been developed for solving potential problems in electrical engineering applications. In the particular case of the grounding analysis area, in recent ... -
A meshless numerical formulation for the solution of potential problems in engineering applications
(Tech Science Press, 1998) -
A minimum weight FEM formulation for Structural Topological Optimization with local stress constraints
(2005)Since Bendsoe and Kikuchi proposed the basic concepts in 1988, most of topology structural optimization results have been obtained so far by means of a maximum stiffness (minimum strain energy, minimum compliance) approach. ... -
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 ... -
A numerical approach based on the BEM for computing transferred earth potentials in grounding analysis
(2003)[Abstract] In this paper we present a numerical approach based on the Boundary Element Method for the analysis of a very common problem in electrical engineering practice: the existence of transferred earth potentials in ... -
A numerical refraction-diffraction model in the ray-front coordinate system
(Computational mechanics: new trends and applications (CD-ROM), 1998)[Resument] A model for the propagation of water waves is presented, which retrieves the concepts of rays and fronts from the geometrical optics approximation. Their definition here is nevertheless different in that it ... -
A particle numerical approach based on the SPH method for computational fluid Mechanics
(2004)[Abstract] Meshfree methods have experimented an important improvement in the last decade. Actually, we can say that the emerging meshless technology constitutes the most promising tool to simulate complex problems in ... -
A stabilized finite element approach for advective-diffusive transport problems
(Escola Politécnica da Universidade de Sao Paulo, 1999)[Abstract] As it is well-know, the numerical simulation in fluid mechanics is quite difficult specially when the velocity of the fluid is important. These problems are reflected in the apparearance of numerical oscillations ... -
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 ...