Exploració per tema "Galerkin, Mètodes de"

Ara es mostren els items 16-35 de 35

    • High-order discontinuous Galerkin methods for incompressible flows 

      Villardi de Montlaur, Adeline de (Universitat Politècnica de Catalunya, 2009-09-22)
      Tesi
      Accés obert
      Aquesta tesi doctoral proposa formulacions de Galerkin discontinu (DG) d'alt ordre per fluxos viscosos incompressibles. <br/>Es desenvolupa un nou mètode de DG amb penalti interior (IPM-DG), que condueix a una forma feble ...

    • High-order hybridizable discontinuous Galerkin formulation for one-phase flow through porous media 

      Costa Solé, Albert; Ruiz Gironès, Eloi; Sarrate Ramos, Josep (2021-03-06)
      Article
      Accés obert
      We present a stable high-order hybridizable discontinuous Galerkin (HDG) formulation coupled with high-order diagonal implicit Runge–Kuta (DIRK) schemes to simulate slightly compressible one-phase flow through porous media. ...

    • High-order hybridizable discontinuous Galerkin formulation with fully implicit temporal schemes for the simulation of two-phase flow through porous media 

      Costa Solé, Albert; Ruiz Gironès, Eloi; Sarrate Ramos, Josep (John Wiley & Sons, 2021-07-30)
      Article
      Accés obert
      We present a memory-efficient high-order hybridizable discontinuous Galerkin (HDG) formulation coupled with high-order fully implicit Runge-Kutta schemes for immiscible and incompressible two-phase flow through porous ...

    • Hybridizable discontinuous Galerkin p-adaptivity for wave propagation problems 

      Giorgiani, Giorgio; Fernández Méndez, Sonia; Huerta, Antonio (2013)
      Article
      Accés obert
      A p-adaptive hybridizable discontinuous Galerkin method for the solution of wave problems is presented in a challenging engineering problem. Moreover, its performance is compared with a high-order continuous Galerkin. The ...

    • Improved accuracy in the scattering analysis of infinitely long ferromagnetic objects 

      Sekulic, Ivan; Úbeda Farré, Eduard; Rius Casals, Juan Manuel (Institute of Electrical and Electronics Engineers (IEEE), 2016)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The scattering of transversal magnetic (TM) electromagnetic waves impinging on infinitely long homogeneous ferromagnetic objects is usually analyzed with the Poggio-Miller-Chan-Harrington-Wu-Tsai (PMCHWT) integral equation. ...

    • Locking in the incompressible limit for the element-free Galerkin method 

      Huerta, Antonio; Fernández Méndez, Sonia (Wiley and Sons, 2001-04)
      Article
      Accés obert
      Volumetric locking (locking in the incompressible limit) for linear elastic isotropic materials is studied in the context of the element-free Galerkin method. The modal analysis developed here shows that the number of ...

    • Locking in the incompressible limit: pseudo-divergence-free element free Galerkin 

      Vidal Seguí, Yolanda; Villon, Pierre; Huerta, Antonio (2003-09)
      Article
      Accés obert
      Locking in finite elements has been a major concern since its early developments. It appears because poor numerical interpolation leads to an over-constrained system. This paper proposes a new formulation that asymptotically ...

    • Locking in the incompressible limit: pseudo-divergence-free element free Galerkin 

      Vidal Seguí, Yolanda; Villon, Pierre; Huerta, Antonio (2002-11)
      Article
      Accés obert
      Locking in finite elements has been a major concern since its early developments and has been extensively studied. However, locking in mesh-free methods is still an open topic. Until now the remedies proposed in the ...

    • Meshfree methods 

      Huerta, Antonio; Belytscko, T; Fernández Méndez, Sonia; Rabczuk, Timon (John Wiley & Sons, 2004-10)
      Capítol de llibre
      Accés restringit per política de l'editorial
      The aim of this chapter is to provide an in-depth presentation and survey of meshfree particle methods. Several particle approximations are reviewed; the SPH method, corrected gradient methods and the moving least squares ...

    • El método de los segmentos 

      Viamontes Esquivel, Alcides; Perez Sanchez, Ismay; Recarey Morfa, Carlos A. (Universitat Politècnica de Catalunya, 2008)
      Article
      Accés obert
      Se reporta el uso de segmentos como dominio de integración para los métodos libres de mallas de tipo Petrov-Galerkin Local (MLPG). El procedimiento acarrea ventajas en el tratamiento de dominios con forma geométrica ...

    • Monotonicity preserving shock capturing techniques for finite elements 

      Hierro Fabregat, Alba (Universitat Politècnica de Catalunya, 2016-11-28)
      Tesi
      Accés obert
      The main object of study of this thesis is the development of artificial diffusion shock capturing techniques for continuous and discontinuous Galerkin (cG and dG) approximations of the convection-diffusion problem. Special ...

    • Un nuevo enfoque para el tratamiento de los términos difusivos en la ecuación de convección-difusión en el método de Galerkin discontinuo 

      Gómez, H; Colominas, I; Navarrina Martínez, Fermín Luis; Casteleiro Maldonado, Manuel (Universitat Politècnica de Catalunya, 2007)
      Article
      Accés obert
      Los modelos utilizados en la práctica para problemas de convección-difusión están habitualmente basados en la ley de Fick. En ciertas aplicaciones el uso de la ley de Fick lineal puede ser adecuado, a pesar de predecir ...

    • On discrete maximum principles for discontinuous Galerkin methods 

      Badia, Santiago; Hierro Fabregat, Alba (2015-04)
      Article
      Accés obert
      The aim of this work is to propose a monotonicity-preserving method for discontinuous Galerkin (dG) approximations of convection–diffusion problems. To do so, a novel definition of discrete maximum principle (DMP) is ...

    • Pseudo-divergence-free element free Galerkin method for incompressible fluid flow 

      Huerta, Antonio; Vidal Seguí, Yolanda; Villon, Pierre (2004-03)
      Article
      Accés obert
      Incompressible modeling in finite elements has been a major concern since its early developments and has been extensively studied. However, incompressibility in mesh-free methods is still an open topic. Thus, instabilities ...

    • Shock capturing for discontinuous galerkin methods 

      Casoni Rero, Eva (Universitat Politècnica de Catalunya, 2011-10-14)
      Tesi
      Accés obert
      Aquesta tesi doctoral proposa formulacions de Galerkin Discontinu (DG) d’alt ordre per la captura de shocks, obtenint alhora solucions altament precises per problemes de flux compressible. En les últimes dècades, la ...

    • Shock capturing techniques for hp-adaptive finite elements 

      Hierro Fabregat, Alba; Badia, Santiago; Kus, Pavel (2016-09)
      Article
      Accés obert
      The aim of this work is to propose an hp-adaptive algorithm for discontinuous Galerkin methods that is capable to detect the discontinuities and sharp layers and avoid the spurious oscillation of the solution around them. ...

    • Stabilized finite element methods for convection-diffusion-reaction, Helmholtz and Stokes problems 

      Nadukandi, Prashanth; Oñate Ibáñez de Navarra, Eugenio; García Espinosa, Julio (Centre Internacional de Mètodes Numèrics en Enginyeria (CIMNE), 2012)
      Llibre
      Accés obert
      We present three new stabilized finite element (FE) based Petrov–Galerkin methods for the convection–diffusion–reaction (CDR), the Helmholtz and the Stokes problems, respectively.

    • Towards a low dissipation FE scheme for scale resolving turbulent compressible flows 

      Silva, Lucas Gasparino F. da; Lehmkuhl Barba, Oriol; Mira Martínez, Daniel (Barcelona Supercomputing Center, 2019-05-07)
      Text en actes de congrés
      Accés obert

    • Tutorial on Hybridizable Discontinuous Galerkin (HDG) for second-order elliptic problems 

      Sevilla Cárdenas, Rubén; Huerta, Antonio (Springuer International Publishing, 2016)
      Capítol de llibre
      Accés restringit per política de l'editorial
      The HDG is a new class of discontinuous Galerkin (DG) methods that shares favorable properties with classical mixed methods such as the well known Raviart-Thomas methods. In particular, HDG provides optimal convergence of ...

    • Una forma de aproximar el error en el método EFG 

      Martín, Ángel J.; Gavete, Luis; Alonso, Beatriz; Ruiz, Antonio (Universitat Politècnica de Catalunya, 2004)
      Article
      Accés obert