Enviaments recents

  • DNS of mass transfer in turbulent bubbly flow in a vertical pipe 

    Balcázar Arciniega, Néstor; Rigola Serrano, Joaquim; Oliva Llena, Asensio (2021)
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    Accés restringit per política de l'editorial
    The present research focuses on the DNS of mass transfer in gravity-driven turbulent bubbly flow in a vertical pipe, at a high Reynolds number (Re approximates to 1000). The objective is to compute the mass transfer ...
  • Transient Thermal Management of Vapor Cycles to Simulate Aircraft Electrical Environment Control Systems 

    Ablanque Mejía, Nicolás; Torras Ortiz, Santiago; Oliet Casasayas, Carles; Rigola Serrano, Joaquim; Pérez Segarra, Carlos David (International Institute of Refrigeration, 2019)
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    Accés restringit per política de l'editorial
    A Modelica library has been developed to simulate both transient and steady state of vapor cycle systems (VCS) integrated within Electrical Environment Control Systems (E-ECS) architectures applied in the thermal management ...
  • Advanced techniques for grau area mitigation in DES simulations and their effectes on the subsonic round jet acoustic spectra 

    Duben, Alexey; Ruano Pérez, Jesús; Trias Miquel, Francesc Xavier; Rigola Serrano, Joaquim (2021)
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    The research dedicated to the investigation of different gray-area mitigation approaches towards accurate aerodynamics and aeroacoustics is presented. The recent modifications of hybrid RANS-LES DDES approach based on ...
  • NUMA-Aware Strategies for the Heterogeneous Execution of SPMV on Modern Supercomputers 

    Álvarez Farré, Xavier; Gorobets, Andrei; Trias Miquel, Francesc Xavier; Oliva Llena, Asensio (2021)
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    The sparse matrix-vector product is a widespread operation amongst the scientific computing community. It represents the dominant computational cost in many large-scale simulations relying on iterative methods, and its ...
  • A General Method to Compute Numerical Dispersion Error 

    Ruano Pérez, Jesús; Baez Vidal, Aleix; Rigola Serrano, Joaquim; Trias Miquel, Francesc Xavier (2021)
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    This article presents a new methodology to compute numerical dispersion error. The analysis here presented is not restricted to uniform structured meshes nor linear discrete operators as it does not rely on sinusoids to ...
  • On the Interpolation Problem for the Poisson Equation on Collocated Meshes 

    Santos Serrano, Daniel; Muela Castro, Jordi; Valle Marchante, Nicolás; Trias Miquel, Francesc Xavier (International Centre for Numerical Methods in Engineering (CIMNE), 2021)
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    The appearence of unphysical velocities in highly distorted meshes is a common problem in many simulations. In collocated meshes, this problem arises from the interpolation of the pressure gradient from faces to cells. ...
  • NUMA-Aware strategies for the efficient execution of CFD simulations on CPU supercomputers 

    Álvarez Farré, Xavier; Gorobets, Andrei; Trias Miquel, Francesc Xavier; Oliva Llena, Asensio (2021)
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    The growing variety of computing architectures and the hybridization of high-performance computing systems encourage the research for portable implementations of numerical methods in simulation codes. However, the pursuit ...
  • Study of Relative Endwall Motion Effects in a Compressor Cascade Through Direct Numerical Simulations 

    Ventosa Molina, Jordi; Lange, Martin; Mailach, Ronald; Fröhlich, Jochen (American Society of Mechanical Engineers (ASME), 2020)
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    Linear cascades are commonly used as surrogate geometries when performing fundamental studies of turbomachinery blading. Several effects are not accounted for in linear cascades, among them the relative motion between blade ...
  • Effects of Rotation on the Flow Structure in a Compressor Cascade 

    Ventosa Molina, Jordi; Koppe, Björn; Lange, Martin; Mailach, Ronald; Fröhlich, Jochen (American Society of Mechanical Engineers (ASME), 2021)
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    In turbomachines, rotors and stators differ by the rotation of the former. Hence, half of each stage is directly influenced by rotation effects. The influence of rotation on the flow structure and its impact on the performance ...
  • Three-dimensional direct numerical simulation (dns) Of taylor bubbles rising in non-Newtonian environments 

    Amani, Ahmad; Castro González, Jesús; Oliva Llena, Asensio (International Centre for Numerical Methods in Engineering (CIMNE), 2021)
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    Three-dimensional numerical simulation of Taylor gas bubbles as primary unites of slug flow patterns rising in non-Newtonian environments is performed in the context of Direct Numerical Simulation (DNS) of the governing ...
  • Unstructured Level-Set Method For Saturated Liquid-Vapor Phase Change 

    Balcázar Arciniega, Néstor; Rigola Serrano, Joaquim; Oliva Llena, Asensio (International Centre for Numerical Methods in Engineering (CIMNE), 2021)
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    A novel conservative level-set method for saturated liquid-vapor phase change on unstruc-tured meshes is introduced. Transport equations are discretized by the finite-volume method on col-located unstructured grids. Mass ...
  • Novel hybrid poly(thiourethane)/POSS covalent adaptable networks 

    Guerrero, Federico; Flor López, Sílvia de la; Ramis Juan, Xavier; Santos, Jose-Ignacio; Serra Albet, Maria Àngels (2021)
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    Hybrid organic-inorganic materials have been introduced as one of the strategies to improve mechanical properties and obtaining new high-performance polymeric materials. These materials present a synergism that meets the ...

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