Now showing items 1-20 of 32

    • 3D nurbs-enhanced finite element method 

      Sevilla Cárdenas, Rubén; Fernández Méndez, Sonia; Huerta, Antonio (2009-06-08T10:12:04Z)
      Conference report
      Open Access
      An improvement of the classical finite element method is proposed in [1], the NURBS-Enhanced Finite Element Method (NEFEM). It is able to exactly represent the geometry by means of the usual CAD description of the boundary ...
    • 3D NURBS-enhanced finite element method (NEFEM) 

      Sevilla Cárdenas, Rubén; Fernández Méndez, Sonia; Huerta, Antonio (Wiley and Sons, 2011-10-14)
      Article
      Restricted access - publisher's policy
      This paper presents the extension of the recently proposed NURBS-enhanced finite element method (NEFEM) to 3D domains. NEFEM is able to exactly represent the geometry of the computational domain by means of its CAD boundary ...
    • A face-centred finite volume method for second-order elliptic problems 

      Sevilla Cárdenas, Rubén; Giacomini, Matteo; Huerta, Antonio (John Wiley & sons, 2018-08-24)
      Article
      Open Access
      This work proposes a novel finite volume paradigm, the face-centred finite volume (FCFV) method. Contrary to the popular vertex (VCFV) and cell (CCFV) centred finite volume methods, the novel FCFV defines the solution on ...
    • A locking-free face-centred finite volume (FCFV) method for linear elastostatics 

      Sevilla Cárdenas, Rubén; Giacomini, Matteo; Huerta, Antonio (2019-02-01)
      Article
      Open Access
      A face-centred finite volume (FCFV) method is proposed for linear elastostatic problems. The FCFV is a mixed hybrid formulation, featuring a system of first-order equations, that defines the unknowns on the faces (edges ...
    • A nonintrusive reduced order method for the NVH assessment and automotive structural dynamics 

      Cavaliere, Fabiola; Zlotnik, Sergio; Sevilla Cárdenas, Rubén; Larráyoz Izcara, Xabier; Díez, Pedro (2021)
      Conference report
      Restricted access - publisher's policy
      The goal of this work is to develop a computational method able to optimize the design process of a car structure and provide a tool which can support designers during the decision-making phase. The design of a car ...
    • A second-order face-centred finite volume method for elliptic problems 

      Vieira, Luan M.; Giacomini, Matteo; Sevilla Cárdenas, Rubén; Huerta, Antonio (2020-01-01)
      Article
      Open Access
      A second-order face-centred finite volume method (FCFV) is proposed. Contrary to the more popular cell-centred and vertex-centred finite volume (FV) techniques, the proposed method defines the solution on the faces of the ...
    • A second-order face-centred finite volume method on general meshes with automatic mesh adaptation 

      Giacomini, Matteo; Sevilla Cárdenas, Rubén (2020-01-01)
      Article
      Open Access
      A second-order face-centred finite volume strategy on general meshes is pro-posed. The method uses a mixed formulation in which a constant approximationof the unknown is computed on the faces of the mesh. Such information ...
    • A superconvergent HDG method for stokes flow with strongly enforced symmetry of the stress tensor 

      Giacomini, Matteo; Karkoulias, Alexandros; Sevilla Cárdenas, Rubén; Huerta, Antonio (2018-12)
      Article
      Open Access
      This work proposes a superconvergent hybridizable discontinuous Galerkin (HDG) method for the approximation of the Cauchy formulation of the Stokes equation using same degree of polynomials for the primal and mixed variables. ...
    • A superconvergent hybridisable discontinuous Galerkin method for linear elasticity 

      Sevilla Cárdenas, Rubén; Giacomini, Matteo; Karkoulias, Alexandros; Huerta, Antonio (John Wiley & sons, 2018-10-12)
      Article
      Open Access
      The first superconvergent hybridisable discontinuous Galerkin method for linear elastic problems capable of using the same degree of approximation for both the primal and mixed variables is presented. The key feature of ...
    • Adaptació de l’ensenyament semipresencial dels mètodes numèrics dins del marc del sistema ects 

      Sarrate Ramos, Josep; Rodríguez Ferran, Antonio; Fernández Méndez, Sonia; Sevilla Cárdenas, Rubén; Rozados, Oriol; Díez, Pedro; Huerta, Antonio (Universitat Politècnica de Catalunya. Institut de Ciències de l'Educació, 2008-02-07)
      Conference report
      Open Access
      En l’actualitat els mètodes numèrics s’han consolidat com una disciplina horitzontal en l’àmbit de l’enginyeria civil. En aquest sentit, les assignatures bàsiques relacionades directament amb els mètodes numèrics han ...
    • Comparison of high-order curved finite elements 

      Sevilla Cárdenas, Rubén; Fernández Méndez, Sonia; Huerta, Antonio (Wiley and Sons, 2011-02-02)
      Article
      Restricted access - publisher's policy
      Several finite element techniques used in domains with curved boundaries are discussed and compared, with particular emphasis in two issues: the exact boundary representation of the domain and the consistency of the ...
    • Discontinuous Galerkin approximations in computational mechanics: hybridization, exact geometry and degree adaptivity 

      Giacomini, Matteo; Sevilla Cárdenas, Rubén (Springer, 2019)
      Article
      Open Access
      Discontinuous Galerkin (DG) discretizations with exact representation of the geometry and local polynomial degree adaptivity are revisited. Hybridization techniques are employed to reduce the computational cost of DG ...
    • Efficient 3d finite element analysis based on cartesian grids considering exact CAD geometries 

      Marco, O.; Sevilla Cárdenas, Rubén; Zhang, Y.; Tur, M.; Ródenas, J.J. (CIMNE, 2015)
      Conference report
      Open Access
      This contribution proposes a 3Dimmersed boundary method,based on Cartesian grids,modified to improve the accuracy along the boundary and the efficiency during the resolution.Onthe one hand, the embedded domain will be ...
    • HDG-NEFEM with degree adaptivity for stokes flows 

      Sevilla Cárdenas, Rubén; Huerta, Antonio (2018-02-07)
      Article
      Open Access
      The NURBS-enhanced finite element method (NEFEM) combined with a hybridisable discontinuous Galerkin (HDG) approach is presented for the first time. The proposed technique completely eliminates the uncertainty induced by ...
    • HDGlab: an open-source implementation of the hybridisable discontinuous Galerkin method in MATLAB 

      Giacomini, Matteo; Sevilla Cárdenas, Rubén; Huerta, Antonio (2020-10-22)
      Article
      Open Access
      This paper presents HDGlab, an open source MATLAB implementation of the hybridisable discontinuous Galerkin (HDG) method. The main goal is to provide a detailed description of both the HDG method for elliptic problems and ...
    • Hybridisable discontinuous Galerkin formulation of compressible flows 

      Vila Pérez, Jordi; Giacomini, Matteo; Sevilla Cárdenas, Rubén; Huerta, Antonio (2021)
      Article
      Open Access
      This work presents a review of high-order hybridisable discontinuous Galerkin (HDG) methods in the context of compressible flows. Moreover, an original unified framework for the derivation of Riemann solvers in hybridised ...
    • Hybridisable discontinuous Galerkin solution of geometrically parametrised Stokes flows 

      Sevilla Cárdenas, Rubén; Borchini, Luca; Giacomini, Matteo; Huerta, Antonio (2020-12-01)
      Article
      Restricted access - publisher's policy
      This paper proposes a novel computational framework for the solution of geometrically parametrised flow problems governed by the Stokes equation. The proposed method uses a high-order hybridisable discontinuous Galerkin ...
    • 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)
      Conference lecture / Conference report
      Open Access
      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 ...
    • NEFEM for EULER equations 

      Sevilla Cárdenas, Rubén; Fernández Méndez, Sonia; Huerta, Antonio (2009-02-16T11:29:15Z)
      Conference report
      Open Access
      An improvement of the classical finite element method is proposed in [1], the NURBS-Enhanced Finite Element Method (NEFEM). It considers an exact representation of the geometry by means of the usual CAD description of the ...
    • Nonintrusive proper generalised decomposition for parametrised incompressible flow problems in OpenFOAM 

      Tsiolakis, Vasileios; Giacomini, Matteo; Sevilla Cárdenas, Rubén; Othmer, Carsten; Huerta, Antonio (2020-04)
      Article
      Open Access
      The computational cost of parametric studies currently represents the major limitation to the application of simulation-based engineering techniques in a daily industrial environment. This work presents the first nonintrusive ...