Now showing items 1-20 of 73

    • A 3D-1D cardiac-vascular computational feedbacked model 

      Santiago, Alfonso; Vázquez, Mariano; Houzeaux, Guillaume; Aguado-Sierra, Jazmin; López, Mariña; Rivero, Matías I.; Blanco Sánchez, Pablo; Watanabe, Sansuke (Barcelona Supercomputing Center, 2015-05-05)
      Conference report
      Open Access
      A first version of a cardiovascular coupled model is presented. The modelling tools are Alya, the BSC tool for biomechanical simulations; and ADAN55, the LNCC model of the arterial blood flow. The former solves the ...
    • A Chimera method for the incompressible Navier-Stokes equations 

      Houzeaux, Guillaume; Eguzkitza, Beatriz; Aubry, Romain; Owen, Herbert; Vázquez, Mariano (John Wiley & Sons, 2014-05-30)
      Article
      Open Access
      The Chimera method was developed three decades ago as a meshing simplification tool. Different components are meshed independently and then glued together using a domain decomposition technique to couple the equations ...
    • A Chimera method for the incompressible Navier-Stokes equations 

      Houzeaux, Guillaume; Eguzkitza, Beatriz; Aubry, Romain; Owen, H.; Vázquez Arenas, M. Benita (2014-05-30)
      Article
      Restricted access - publisher's policy
      The Chimera method was developed three decades ago as a meshing simplification tool. Different components are meshed independently and then glued together using a domain decomposition technique to couple the equations ...
    • A FE2 multi-scale implementation for modeling composite materials on distributed architectures 

      Giuntoli, Guido; Aguilar Mena, Jimmy; Vázquez, Mariano; Oller Martínez, Sergio Horacio; Houzeaux, Guillaume (2019-04-01)
      Article
      Restricted access - publisher's policy
      This work investigates the accuracy and performance of a FE2 multi-scale implementation used to predict the behavior of composite materials. The equations are formulated assuming the small deformations solid mechanics ...
    • A generic performance analysis technique applied to different CFD methods for HPC 

      Garcia Gasulla, Marta; Banchelli Gracia, Fabio; Peiró Conde, Kilian; Ramírez Gargallo, Guillem; Houzeaux, Guillaume; Hassan Saïdi, Ismaïl Ben; Tenaud, Christian; Spisso, Ivan; Mantovani, Filippo (Taylor & Francis, 2020-07-16)
      Article
      Open Access
      For complex engineering and scientific applications, Computational Fluid Dynamics (CFD) simulations require a huge amount of computational power. As such, it is of paramount importance to carefully assess the performance ...
    • A Geometrical Domain Decomposition Methods in Computational Fluid Dynamics 

      Houzeaux, Guillaume (Universitat Politècnica de Catalunya, 2002-05-10)
      Doctoral thesis
      Open Access
      El método de descomposición de dominios (DD) que se propone en esta tesis pretende resolver flujos incompresibles alrededor de objetos en movimiento relativo. El algoritmo de DD está basado en un acoplamiento del tipo ...
    • A low-dissipation finite element scheme for scale resolving simulations of turbulent flows 

      Lehmkuhl, Oriol; Houzeaux, Guillaume; Owen, Herbert; Chrysokentis, Giorgios; Rodríguez Pérez, Ivette María (2019-08-01)
      Article
      Open Access
      The present work extends the conservative convective scheme proposed by Charnyi et al. (2017) [13], originally formulated for mixed finite elements and tested in laminar flows, to equal order finite elements. A non-incremental ...
    • A Parallel CFD Model for Wind Farms 

      Avila, Matías; Folch, Arnau; Houzeaux, Guillaume; Eguzkitza, Beatriz; Prieto, Luis; Cabezón, Daniel (Elsevier, 2013-06-01)
      Article
      Open Access
      We present a Computational Fluid Dynamics (CFD) modeling strategy for onshore wind farms aimed at predicting and opti- mizing the production of farms using a CFD model that includes meteorological data assimilation, complex ...
    • A parallel coupled algorithm for the solution of deformable two-body contact problem 

      Rivero Almeida, José Miguel; Cajas García, Juan Carlos; Houzeaux, Guillaume; Vázquez, Mariano (Barcelona Supercomputing Center, 2015-05-05)
      Conference report
      Open Access
      This work presents a parallel iterative method for numerical solving frictionless contact problem for two elastic bodies. Each iterative step consists of a Dirichlet problem for the one body and a Neumann problem for ...
    • A parallel finite-element method for three-dimensional controlled-source electromagnetic forward modelling 

      Puzyrev, Vladimir; Koldan, Jelena; de la Puente, Josep; Houzeaux, Guillaume; Vázquez, Mariano; Cela, José M. (Wiley-Blackwell, 2013-02-18)
      Article
      Open Access
      We present a nodal finite-element method that can be used to compute in parallel highly accurate solutions for 3-D controlled-source electromagnetic forward modeling problems in anisotropic media. Secondary coupled-potential ...
    • A Review of Element-Based Galerkin Methods for Numerical Weather Prediction: Finite Elements, Spectral Elements, and Discontinuous Galerkin 

      Marras, Simone; Kelly, James F.; Moragues, Margarida; Müller, Andreas; Kopera, Michal A.; Vázquez, Mariano; Giraldo, Francis X.; Houzeaux, Guillaume; Jorba, Oriol (Springer, 2015-05-19)
      Article
      Open Access
      Numerical weather prediction (NWP) is in a period of transition. As resolutions increase, global models are moving towards fully nonhydrostatic dynamical cores, with the local and global models using the same governing ...
    • A variational multiscale stabilized finite element method for the solution of the Euler equations of nonhydrostatic stratified flows 

      Marras, Simone; Moragues, Margarida; Vázquez, Mariano; Jorba Casellas, Oriol; Houzeaux, Guillaume (2013-03-01)
      Article
      Restricted access - publisher's policy
      We present a compressible version of the variational multiscale stabilization (VMS) method applied to the finite element (FE) solution of the Euler equations for nonhydrostatic stratified flows. This paper is meant to ...
    • Algebraic multigrid preconditioning within parallel finite-element solvers for 3-D electromagnetic modelling problems in geophysics 

      Koldan, Jelena; Puzyrev, Vladimir; de la Puente, Josep; Houzeaux, Guillaume; Cela, José M. (Wiley-Blackwell, 2014-06)
      Article
      Open Access
      We present an elaborate preconditioning scheme for Krylov subspace methods which has been developed to improve the performance and reduce the execution time of parallel node-based finite-element solvers for three-dimensional ...
    • Alya: Computational Solid Mechanics for Supercomputers 

      Casoni Rero, Eva; Jérusalem, Antoine; Samaniego, Cristóbal; Eguzkitza, Beatriz; Lafortune, Pierre; Tjahjanto, Denny; Sáez, Xavier; Houzeaux, Guillaume; Vázquez, Mariano (Springer, 2014-08-13)
      Article
      Open Access
      While solid mechanics codes are now conventional tools both in industry and research, the increasingly more exigent requirements of both sectors are fuelling the need for more computational power and more advanced algorithms. ...
    • Alya: Multiphysics engineering simulation toward exascale 

      Vázquez, Mariano; Houzeaux, Guillaume; Koric, Seid; Artigues, Antoni; Aguado Sierra, Jazmin; Arís Sánchez, Ruth; Mira, Daniel; Calmet, Hadrien; Cucchietti, Fernando; Owen, Herbert; Taha, Ahmed; Dering Burness, Evan; Cela Espín, José M.; Valero Cortés, Mateo (Elsevier, 2016-05)
      Article
      Open Access
      Alya is a multi-physics simulation code developed at Barcelona Supercomputing Center (BSC). From its inception Alya code is designed using advanced High Performance Computing programming techniques to solve coupled problems ...
    • Alya: Multiphysics engineering simulation toward exascale 

      Vázquez, Mariano; Houzeaux, Guillaume; Koric, Seid; Artigues, Antoni; Aguado-Sierra, Jazmin; Arís, Ruth; Mira, Daniel; Calmet, Hadrien; Cucchietti, Fernando; Owen, Herbert; Taha, Ahmed; Burness, Evan D.; Cela, José M.; Valero Cortés, Mateo (Elsevier, 2016-02-01)
      Article
      Open Access
      Alya is a multi-physics simulation code developed at Barcelona Supercomputing Center (BSC). From its inception Alya code is designed using advanced High Performance Computing programming techniques to solve coupled problems ...
    • An unstructured CFD approach for numerical weather prediction 

      Aubry, Romain; Vázquez, Mariano; Houzeaux, Guillaume; Cela Espín, José M.; Marras, Simone (2010)
      Conference report
      Restricted access - publisher's policy
      The aim of this paper is twofold. First, it is difficult for a newcomer in the Numerical Weather Prediction (NWP) community to find similarities with Computational Fluid Dynamics (CFD) techniques as far as the numerical ...
    • An XFEM/CZM implementation for massively parallel simulations of composites fracture 

      Vigueras, Guillermo; Sket, Federico; Samaniego, Cristobal; Wu, Ling; Noels, Ludovic; Tjahjanto, Denny; Casoni Rero, Eva; Houzeaux, Guillaume; Makradi, Ahmed; Molina-Aldareguia, Jon M.; Vázquez, Mariano; Jérusalem, Antoine (Elsevier, 2015-07)
      Article
      Open Access
      Because of their widely generalized use in many industries, composites are the subject of many research campaigns. More particularly, the development of both accurate and flexible numerical models able to capture their ...
    • Application of a Galerkin finite element scheme to atmospheric buoyant and gravity driven flows 

      Marras, Simone; Vázquez, Mariano; Jorba Casellas, Oriol; Aubry, Romain; Houzeaux, Guillaume; Baldasano Recio, José María (2010)
      Conference report
      Restricted access - publisher's policy
      The application of a new finite element (FE) technique for the solution of stratified, non-hydrostatic, low-Mach number flows is introduced in the context of mesoscale atmospheric modeling. In this framework, a Compressible ...
    • Benchmarking of state-of-the-art HPC clusters with a production CFD code 

      Banchelli Gracia, Fabio; Garcia Gasulla, Marta; Houzeaux, Guillaume; Mantovani, Filippo (Association for Computing Machinery (ACM), 2020)
      Conference report
      Open Access
      Computing technologies populating high-performance computing (HPC) clusters are getting more and more diverse, offering a wide range of architectural features. As a consequence, efficient programming of such platforms ...