Listar Grupo de Métodos Numéricos na Enxeñería por título
Mostrando ítems 1-20 de 135
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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 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 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
(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 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 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 high-order finite volume method with improved isotherms reconstruction for the computation of multiphase flows using the Navier–Stokes–Korteweg equations
(Elsevier, 2020)[Abstract] In this work we solve the Navier–Stokes–Korteweg (NSK) equations to simulate a two-phase fluid with phase change. We use these equations on a diffuse interface approach, where the properties of the fluid vary ... -
A Higher‑Order Chimera Method for Finite Volume Schemes
(Springer, 2018)[Abstract:] In this work a higher-order accurate finite volume method for the resolution of the Euler/Navier–Stokes equations using Chimera grid techniques is presented. The formulation is based on the use of Moving Least ... -
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 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 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. ...