Browsing GI-GMNE - Artigos by Title
Now showing items 1-20 of 31
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A boundary element formulation for the substation grounding design
(Elsevier, 1999)[Abstract] A Boundary Element approach for the numerical computation of substation grounding systems is presented. In this general formulation, several widespread intuitive methods (such as Average Potential Method) can ... -
A boundary element numerical approach for earthing grid computation
(Elsevier, 1999)[Abstract] Analysis and design of substation earthing involves computing the equivalent resistance of grounding systems, as well as distribution of potentials on the earth surface due to fault currents [1,2]. While very ... -
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 generalized statement for advective-diffusive phenomena. Finite element model and applications
(John Wiley and Sons, 2000)[Abstract] Solving convective-diffusive transport problems is a frequent task in engineering, especially in convection dominated situations. Moreover, the standard statement for the transport problem leads to the result ... -
A Mathematical Model to Evaluate the Impact of the Maintenance Strategy on the Service Life of Flexible Pavements
(Hindawi, 2019)[Abstract] The structural failure of a flexible pavement occurs when the accumulated fatigue damage produced by all the vehicles that have passed over each section exceeds a certain threshold. For this reason, the service ... -
A numerical formulation for grounding analysis in stratified soils
(IEEE Power Engineering Society, 2002)[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. In order to achieve ... -
A Well-Balanced SPH-ALE Scheme for Shallow Water Applications
(Springer, 2021)[Abstract] In this work, a new discretization of the source term of the shallow water equations with non-flat bottom geometry is proposed to obtain a well-balanced scheme. A Smoothed Particle Hydrodynamics Arbitrary ... -
An Arbitrary Lagrangian-Eulerian SPH-MLS Method for the Computation of Compressible Viscous Flows
(Elsevier, 2022)[Abstract] In this work we present a high-accurate discretization to solve the compressible Navier-Stokes equations using an Arbitrary Lagrangian-Eulerian meshless method (SPH-MLS), which can be seen as a general formulation ... -
Analysis of transferred earth potentials in grounding systems: a BEM numerical approach
(IEEE Power Engineering Society, 2003)[Abstract] In this work we present a numerical formulation for the analysis of a common problem in electrical engineering practice, that is, the existence of transferred earth potentials in a grounding installation [1]. ... -
Aplicación de una formulación de elementos finitos para la resolución del flujo en unidades de proceso de aguas residuales
(Fundación para el Fomento de la Ingeniería del Agua, 2003)[Resumen] En el presente trabajo se exponen los resultados de la aplicación de una formulación numérica propuesta por los autores, en la resolución de varios problemas de flujo relacionados con el tratamiento de aguas ... -
Boundary element formulation for the analysis of transferred potentials in electrical installations
(Elsevier, 2004)[Abstract] In this work we present a BEM numerical formulation for the analysis of a common problem in electrical engineering practice, that is, the existence of transferred earth potentials in a grounding installation ... -
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 ... -
Finite volume solvers and moving least-squares approximations for the compressible Navier-Stokes equations on unstructured grids
(Elsevier, 2005)[Abstract] This paper introduces the use of Moving Least-Squares (MLS) approximations for the development of high order upwind schemes on unstructured grids, applied to the numerical solution of the compressible Navier-Stokes ... -
Una formulación numérica general para el cálculo y diseño de tomas de tierra en grandes instalaciones eléctricas
(Universitat Politècnica de Catalunya, 1997)[Resumen] La puesta a tierra de una instalación eléctrica es imprescindible para garantizar su seguridad cuando tienen lugar situaciones de fallo. Para su correcto análisis y diseño se requiere la determinación de una ... -
Una formulación numérica sin malla basada en los métodos SPH con ponderación de Galerkin
(Universitat Politècnica de Catalunya, 2005)[Resumen] En este artículo se propone una formulación numérica sin malla de tipo Galerkin basada en el método de partículas SPH con aproximación de mínimos cuadrados móviles y su aplicación a problemas de mecánica de fluidos ... -
High order finite volume schemes on unstructured grids using Moving Least Squares reconstruction. Application to shallow water dynamics
(John Wiley and Sons, 2005)[Abstract] This paper introduces the use of Moving Least Squares (MLS) approximations for the development of high-order finite volume discretizations on unstructured grids. The field variables and their succesive derivatives ... -
High Order Shape Design Sensitivity: A Unified Approach
(Elsevier, 2000)[Abstract] Three basic analytical approaches have been proposed for the calculation of sen- sitivity derivatives in shape optimization problems. The first approach is based on differentiation of the discretized equations ... -
Improved δ-SPH Scheme With Automatic and Adaptive Numerical Dissipation
(MDPI, 2020)[Abstract] In this work we present a δ-Smoothed Particle Hydrodynamics (SPH) scheme for weakly compressible flows with automatic adaptive numerical dissipation. The resulting scheme is a meshless self-adaptive method, in ... -
Krein’s theorem in the context of topological abelian groups
(MDPI, 2022)[Abstract:] A topological abelian group G is said to have the quasi-convex compactness property (briefly, qcp) if the quasi-convex hull of every compact subset of G is again compact. In this paper we prove that there exist ... -
Numerical Analysis and Safety Design of Grounding Systems in Underground Compact Substations
(Elsevier, 2022)[Abstract] This paper presents a mathematical and numerical formulation to design and analyze grounding systems in underground electrical substations. The developed approach is based on the well known Maxwell’s Equations. ...
