Ara es mostren els items 77-96 de 145

    • Generalized parametric solutions in Stokes flow 

      Díez, Pedro; Zlotnik, Sergio; Huerta, Antonio (2017-11-01)
      Article
      Accés obert
      Design optimization and uncertainty quantification, among other applications of industrial interest, require fast or multiple queries of some parametric model. The Proper Generalized Decomposition (PGD) provides a separable ...
    • Goal-oriented adaptivity for shell structures: error assessment and remeshig criteria 

      Díez, Pedro; Morata Ruano, Irene; Huerta, Antonio (2003-12)
      Article
      Accés restringit per política de l'editorial
      The reliable computation of shell structures requires a tool to assess and control the quality of the finite element solution. For practical purposes, the quality of the numerical solution must be measured using a quantity ...
    • Goal-oriented error estimation for transient parabolic problems 

      Díez, Pedro; Calderón, Giovanni (2007-04)
      Article
      Accés obert
      This work focuses on controlling the error and adapting the discretization in the context of parabolic problems. In order to obtain a sound mathematical framework, the time domain is discretized using a Discontinuous ...
    • Goal-oriented h-adaptivity for the Helmholtz equation: error estimates, local indicators and refinement strategies 

      Steffens, Lindaura; Parés Mariné, Núria; Díez, Pedro (2011-01-14)
      Article
      Accés obert
      This paper introduces a new goal-oriented adaptive technique based on a simple and effective post-process of the finite element approximations. The goal-oriented character of the estimate is achieved by analyzing both the ...
    • Goal-oriented space-time adaptivity for transient dynamics using a modal description of the adjoint solution 

      Verdugo Rojano, Francesc; Parés Mariné, Núria; Díez, Pedro (2014-08-01)
      Article
      Accés obert
      This article presents a space-time adaptive strategy for transient elastodynamics. The method aims at computing an optimal space-time discretization such that the computed solution has an error in the quantity of interest ...
    • Guaranteed energy error bounds for the Poisson equation using a flux-free approach: solving the local problems in subdomains 

      Parés Mariné, Núria; Santos, Hugo; Díez, Pedro (2009-03-23)
      Article
      Accés obert
    • Hierarchical x-fem applied to n-phase flow 

      Zlotnik, Sergio; Díez, Pedro (2009-06-02T09:26:48Z)
      Text en actes de congrés
      Accés obert
      In this work we proposed an extencion of the level set technique to track any number of free surfaces. This extension is based in a hierarchical ordering of several level set functions. To complete the X–FEM approach, the ...
    • Hierarchical X-FEM for n-phase flow (n > 2) 

      Zlotnik, Sergio; Díez, Pedro (2009-01)
      Article
      Accés obert
      The eXtended Finite Element Method (X-FEM) has been successfully used in two-phase flow problems involving a moving interface. In order to simulate problems involving more than two phases, the X-FEM has to be further ...
    • Hybrid analytical-numerical methodology for computationally efficient pre-design analysis of fluid-structure interaction 

      Rubio, Jordi; Iakovlev, Serguei; Díez, Pedro (CIMNE, 2015)
      Text en actes de congrés
      Accés obert
      Analytical approach to modeling the interaction between submerged elastic structures and non-stationary loads has long been recognized as an attractive tool of engineering analysis, especially at the pre-design stage ...
    • Implicit residual type error estimators 

      Huerta, Antonio; Díez, Pedro (Springer, 2016)
      Capítol de llibre
      Accés restringit per política de l'editorial
      The error associated with a numerical solution is intimately related with the residual, that is the lack of verification of the equation by the approximated solution. The residual is computable but obtaining the exact ...
    • Inclusió de les tic en el portafoli de l’estudiant per a l’ensenyament dels mètodes numèrics 

      Sarrate Ramos, Josep; Rodríguez Ferran, Antonio; Fernández Méndez, Sonia; Sevilla Cárdenas, Rubén; Rozados, Oriol; Díez, Pedro; Huerta, Antonio (2009-02-12T13:49:56Z)
      Comunicació de congrés / Text en actes de congrés
      Accés obert
      La finalitat d’aquest projecte ha estat la millora de la formació global dels estudiants. Concretament, mitjançant la creació d’un portafoli que contingui les diferents activitats que ha realitzat l’estudiant al llarg ...
    • Integrated tool for the acoustic assessment and monitoring of marine activities and operations 

      Moura, André; Lopes, Diogo; Cruz, Erica; Hospital Bravo, Raúl; Sarrate Ramos, Josep; Díez, Pedro (2015)
      Text en actes de congrés
      Accés obert
    • Internet-based tutorial providing mathematical complements for technical master students: TIMEMathCom 

      Estela Carbonell, M. Rosa; Díez, Pedro (Institute of Electrical and Electronics Engineers (IEEE), 2016)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The mathematical background of international students in Technical Master programs is pretty heterogeneous. They often lack of a sound basis in specific topics, which are necessary to follow the Master. Filling this gap ...
    • Introduction to the finite element method 

      Oñate Ibáñez de Navarra, Eugenio; Díez, Pedro; Zárate Araiza, José Francisco; Larese De Tetto, Antonia (Universitat Politècnica de Catalunya, 2008-10)
      Apunts
      Accés obert
    • La Ingeniería Computacional en la Escuela de Caminos de Barcelona 

      Huerta, Antonio; Díez, Pedro; Fernández Méndez, Sonia; Pérez Foguet, Agustí; Rodríguez Ferran, Antonio; Sarrate Ramos, Josep (UCLM-ETS Ingenieros de Caminos Ciudad Real, 2003)
      Text en actes de congrés
      Accés obert
      La ingeniería computacional se ha consolidado ya como una disciplina horizontal en el ámbito de la ingeniería civil. La modelización numérica es, cada vez más, una alternativa para el cálculo y diseño en inge niería a los ...
    • Maths complements for Computational Mechanics a ATENEA Labs 

      Estela Carbonell, M. Rosa; Díez, Pedro; Saà Seoane, Joel; Villalonga Pons, Juana María (Universitat Politècnica de Catalunya. Institut de Ciències de l'Educació, 2010-06-04)
      Comunicació de congrés
      Accés obert
      Els estudiants que ingressen als màsters en anglès de la UPC provinents d’altres països sovint tenen carències en coneixements bàsics de matemàtiques que s’imparteixen al primer cicle (Bachelor). El nostre projecte consisteix ...
    • Meshless methods in dual analysis: theoretical and implementation issues 

      Ivannikov, Vladimir; Tiago, C.; Almeida, José Paulo Moitinho de; Díez, Pedro (2013-12)
      Article
      Accés obert
      This paper presents a meshless implementation of dual analysis for 2D linear elasticity problems. The derivation of the governing systems of equations for the discretized compatible and equilibrated models is detailed and ...
    • Modal-based goal-oriented error assessment and adaptivity for structural dynamics 

      Verdugo Rojano, Francesc; Parés Mariné, Núria; Díez, Pedro (2014)
      Text en actes de congrés
      Accés obert
    • Modal-based goal-oriented error assessment for timeline-dependent quantities in transient dynamics 

      Verdugo Rojano, Francesc; Parés Mariné, Núria; Díez, Pedro (John Wiley & Sons, 2013-08-24)
      Article
      Accés restringit per política de l'editorial
      This article presents a new approach to assess the error in specific quantities of interest in the framework of linear elastodynamics. In particular, a new type of quantities of interest (referred as timeline-dependent ...
    • Model validation for the numerical simulation of the Double Punch Test 

      Pros Parés, Alba; Díez, Pedro; Molins i Borrell, Climent (2008)
      Text en actes de congrés
      Accés obert
      The Double Punch test, an indirect traction test, is simulated numerically considering two different models (the nonlocal Mazars damage model and an heuristic crack model with joint elements). The test was designed to ...