Now showing items 1-20 of 31

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

    Santiago, Alfonso; Vázquez, Mariano; Houzeaux, Guillaume; Aguado-Sierra, Jazmin; López, Mariña; Rivero, Matías; 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, B.; 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 Geometrical Domain Decomposition Methods in Computational Fluid Dynamics 

    Houzeaux, Guillaume (Universitat Politècnica de Catalunya, 2002-05-10)
    Doctoral thesis
    Open Access
  • 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, J.C.; 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
    Restricted access - publisher's policy
    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, Ruth; Mira, Daniel; Calmet, Hadrien; Cucchietti, Fernando; Owen, Herbert; Taha, Ahmed; Burness, Evan D.; Cela, José M.; Valero, Mateo (Elsevier, 2016-02-01)
    Article
    Restricted access - publisher's policy
    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
    Restricted access - publisher's policy
    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 ...
  • Broadcast-enabled massive multicore architectures: a wireless RF approach 

    Abadal Cavallé, Sergi; Sheinman, Benny; Katz, Oded; Markish, Ofer; Elad, Danny; Fournier, Yvan; Roca, Damian; Hanzich, Mauricio; Houzeaux, Guillaume; Nemirovsky, Mario; Alarcón Cot, Eduardo José; Cabellos Aparicio, Alberto (2015-09)
    Article
    Open Access
    Broadcast traditionally has been regarded as a prohibitive communication transaction in multiprocessor environments. Nowadays, such a constraint largely drives the design of architectures and algorithms all-pervasive in ...
  • Coupled electromechanical model of the heart: Parallel finite element formulation 

    Lafortune, Pierre; Aris, Ruth; Vázquez, Mariano; Houzeaux, Guillaume (2012-01)
    Article
    Restricted access - publisher's policy
    In this paper, a highly parallel coupled electromechanical model of the heart is presented and assessed. The parallel-coupled model is thoroughly discussed, with scalability proven up to hundreds of cores. This work focuses ...
  • Dynamics of Airflow in a Short Inhalation 

    Bates, Alister J.; Doorly, Denis J.; Cetto, Raul; Calmet, Hadrien; Gambaruto, Alberto; Tolley, Neil; Houzeaux, Guillaume; Schroter, Robert (The Royal Society, 2015-01-06)
    Article
    Open Access
    During a rapid inhalation, such as a sniff, the flowin the airways accelerates and decays quickly. The consequences for flow development and convective transport of an inhaled gas were investigated in a subject geometry ...
  • Heat Transfer Effects on a Fully Premixed Methane Impinging Flame 

    Mira, Daniel; Zavala, Miguel; Avila, Matías; Owen, Herbert; Cajas, Juan C.; Vázquez, Mariano; Houzeaux, Guillaume (Springer, 2016-01-09)
    Article
    Restricted access - publisher's policy
    A numerical assessment of different thermal conditions for an impinging flame configuration is investigated using large-eddy simulation. The cases of study correspond to a turbulent methane flame at equivalence ratio ER = ...
  • Large-scale CFD simulations of the transitional and turbulent regime for the large human airways during rapid inhalation 

    Calmet, Hadrien; Gambaruto, Alberto M.; Bates, Alister J.; Vázquez, Mariano; Houzeaux, Guillaume; Doorly, Denis J. (Elsevier, 2016-02-01)
    Article
    Open Access
    The dynamics of unsteady flow in the human large airways during a rapid inhalation were investigated using highly detailed large-scale computational fluid dynamics on a subject-specific geometry. The simulations were ...