Enviaments recents

  • A wind field downscaling strategy based on domain segmentation and transfer functions 

    Barcons, Jordi; Avila, Matias; Folch, Arnau (Wiley, 2018-02-06)
    Article
    Accés obert
    This paper presents a novel methodology for mesoscale‐to‐microscale downscaling of near‐surface wind fields. The model chain consists on the Weather Research and Forecast mesoscale model and the Alya‐CFDWind microscale ...
  • Left Ventricular Trabeculations Decrease the Wall Shear Stress and Increase the Intra-Ventricular Pressure Drop in CFD Simulations 

    Sacco, Federica; Paun, Bruno; Lehmkuhl, Oriol; Iles, Tinen L.; Iaizzo, Paul A.; Houzeaux, Guillaume; Vázquez, Mariano; Butakoff, Constantine; Aguado-Sierra, Jazmin (Frontiers Media, 2018-04-30)
    Article
    Accés obert
    The aim of the present study is to characterize the hemodynamics of left ventricular (LV) geometries to examine the impact of trabeculae and papillary muscles (PMs) on blood flow using high performance computing (HPC). ...
  • MPI+X: task-based parallelization and dynamic load balance of finite element assembly 

    Garcia-Gasulla, Marta; Houzeaux, Guillaume; Ferrer, Roger; Artigues, Antoni; López, Victor; Labarta, Jesús; Vázquez, Mariano (2018)
    Working paper
    Accés obert
    The main computing tasks of a finite element code(FE) for solving partial differential equations (PDE's) are the algebraic system assembly and the iterative solver. This work focuses on the first task, in the context of ...
  • Overview of ASDEX Upgrade results 

    ASDEX Upgrade Team; EUROfusion MST1 Team; Mantsinen, Mervi (International Atomic Energy Agency (IAEA), 2017-06-28)
    Article
    Accés obert
    The ASDEX Upgrade (AUG) programme is directed towards physics input to critical elements of the ITER design and the preparation of ITER operation, as well as addressing physics issues for a future DEMO design. Since 2015, ...
  • The combustion mitigation of methane as a non-CO2 greenhouse gas 

    Jian, X.; Mira, Daniel; Cluff, D.L. (Elsevier, 2018-05)
    Article
    Accés restringit per política de l'editorial
    Anthropogenic emissions of non-CO2 greenhouse gases such as fugitive methane contribute significantly to global warming. A review of fugitive methane combustion mitigation and utilisation technologies, which are primarily ...
  • Regional aerosol deposition in the human airways: The SimInhale benchmark case and a critical assessment of in silico methods 

    Koullapis, P.; Kassinos, S.C.; Muela Castro, Jordi; Perez-Segarra, C.; Rigola, J.; Lehmkuhl, Oriol; Cui, Y.; Sommerfeld, M.; Jicha, M.; Saveljic, I.; Filipovic, N.; Lizal, F.; Nicolaou, L. (Elsevier, 2018-02-15)
    Article
    Accés restringit per política de l'editorial
    Regional deposition effects are important in the pulmonary delivery of drugs intended for the topical treatment of respiratory ailments. They also play a critical role in the systemic delivery of drugs with limited lung ...
  • LES-based Study of the Roughness Effects on the Wake of a Circular Cylinder from Subcritical to Transcritical Reynolds Numbers 

    Rodriguez, Ivette; Lehmkuhl, Oriol; Piomelli, Ugo; Chiva, Jorge; Borrell, Ricard; Oliva, Assensi (Springer Verlag, 2017-12)
    Article
    Accés restringit per política de l'editorial
    This paper investigates the effects of surface roughness on the flow past a circular cylinder at subcritical to transcritical Reynolds numbers. Large eddy simulations of the flow for sand grain roughness of size k/D = 0.02 ...
  • High-Performance Computing: Do’s and Dont’s 

    Houzeaux, Guillaume; Borrell, Ricard; Fournier, Yvan; Garcia-Gasulla, Marta; Göbbert, Jens H.; Hachem, Elie; Mehta, Vishal; Mesri, Youssef; Owen, Herbert; Vázquez, Mariano (InTech, 2018-02-14)
    Capítol de llibre
    Accés obert
    Computational fluid dynamics (CFD) is the main field of computational mechanics that has historically benefited from advances in high-performance computing. High-performance computing involves several techniques to make a ...
  • The Effect of Partial Premixing and Heat Loss on the Reacting Flow Field Prediction of a Swirl Stabilized Gas Turbine Model Combustor 

    Gövert, Simon; Mira, Daniel; Kok, Jim B. W.; Vázquez, Mariano; Houzeaux, Guillaume (Springer Verlag, 2018-03)
    Article
    Accés obert
    This work addresses the prediction of the reacting flow field in a swirl stabilized gas turbine model combustor using large-eddy simulation. The modeling of the combustion chemistry is based on laminar premixed flamelets ...
  • Potential ash impact from Antarctic volcanoes: Insights from Deception Island’s most recent eruption 

    Geyer, A.; Marti, Alejandro; Giralt, S.; Folch, Arnau (Nature Publishing Group, 2017-11-28)
    Article
    Accés obert
    Ash emitted during explosive volcanic eruptions may disperse over vast areas of the globe posing a threat to human health and infrastructures and causing significant disruption to air traffic. In Antarctica, at least five ...
  • Strategies to Improve the Performance of a Geophysics Model for Different Manycore Systems 

    Serpa, Matheus S.; Cruz, Eduardo H.M.; Diener, Matthias; Krause, Arthur M.; Navaux, Philippe O.A.; Farrés, Albert; Rosas, Claudia; Hanzich, Mauricio; Panetta, Jairo (IEEE, 2017-11-16)
    Comunicació de congrés
    Accés obert
    Many software mechanisms for geophysics exploration in Oil & Gas industries are based on wave propagation simulation. To perform such simulations, state-of-art HPC architectures are employed, generating results faster and ...
  • Unconventional Current Scaling and Edge Effects for Charge Transport through Molecular Clusters 

    Obersteiner, Veronika; Huhs, Georg; Papior, Nick; Zojer, Egbert (2017-10-18)
    Accés obert
    Metal–molecule–metal junctions are the key components of molecular electronics circuits. Gaining a microscopic understanding of their conducting properties is central to advancing the field. In the present contribution, ...

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