Computer Applications in Science & Engineering

Recent Submissions

  • Diurnal cycle RANS simulations applied to wind resource assessment 

    Barcons, Jordi; Avila, Matias; Folch, Arnau (Wiley, 2019-02)
    Article
    Open Access
    Microscale computational fluid dynamics (CFD) models can be used for wind resource assessment on complex terrains. These models generally assume neutral atmospheric stratification, an assumption that can lead to inaccurate ...

  • Parallel 3-D marine controlled-source electromagnetic modelling using high-order tetrahedral Nédélec elements 

    Castillo-Reyes, Octavio; de la Puente, Josep; García-Castillo, Luis Emilio; Cela, Jose M. (Oxford University Press, 2019-10)
    Article
    Open Access
    We present a parallel and high-order Nédélec finite element solution for the marine controlled-source electromagnetic (CSEM) forward problem in 3-D media with isotropic conductivity. Our parallel Python code is implemented ...

  • Application of the VUV and the soft x-ray systems on JET for the study of intrinsic impurity behavior in neon seeded hybrid discharges 

    Krawczyk, N.; Czarnecka, A.; Ivanova-Stanik, I.; Zagórski, R.; Challis, C.; Frigione, D.; Giroud, C.; Graves, J.; Mantsinen, Mervi; Silburn, S.; JET Contributors (AIP Publishing, 2018-10-24)
    Article
    Open Access
    This paper reports on impurity behavior in a set of hybrid discharges with Ne seeding—one of the techniques considered to reduce the power load on reactor walls. A series of experiments carried out with light gas injection ...

  • Extension of the parallel Sparse Matrix Vector Product (SpMV) for the implicit coupling of PDEs on non-matching meshes 

    Houzeaux, Guillaume; Borrell, Ricard; Cajas García, Juan Carlos; Vázquez, Mariano (Elsevier, 2018-09-15)
    Article
    Restricted access - publisher's policy
    The Sparse Matrix Vector Product (SpMV) is one of the main operations of iterative solvers, and, in a parallel context, it is also the siege of point-to-point communications between the neighboring MPI processes. The ...

  • A stochastic rupture earthquake code based on the fiber bundle model (TREMOL v0.1): application to Mexican subduction earthquakes 

    Monterrubio-Velasco, Marisol; Rodríguez-Pérez, Quetzalcóatl; Zúñiga, Ramón; Scholz, Doreen; Aguilar-Méléndez, Armando; de la Puente, Josep (European Geosciences Union (EGU), 2019-05-08)
    Article
    Open Access
    In general terms, earthquakes are the result of brittle failure within the heterogeneous crust of the Earth. However, the rupture process of a heterogeneous material is a complex physical problem that is difficult to model ...

  • High-Integrity GPU Designs for Critical Real-Time Automotive Systems 

    Alcaide, Sergi; Kosmidis, Leonidas; Hernandez, Carles; Abella, Jaume (IEEE, 2019-04-16)
    Conference lecture
    Open Access
    Autonomous Driving (AD) imposes the use of highperformance hardware, such as GPUs, to perform object recognition and tracking in real-time. However, differently to the consumer electronics market, critical real-time AD ...

  • Parallel mesh partitioning based on space filling curves 

    Borrell, Ricard; Cajas García, Juan Carlos; Mira, Daniel; Taha, A.; Koric, S.; Vázquez, Mariano; Houzeaux, Guillaume (Elsevier, 2018-09)
    Article
    Restricted access - publisher's policy
    Larger supercomputers allow the simulation of more complex phenomena with increased accuracy. Eventually this requires finer and thus also larger geometric discretizations. In this context, and extrapolating to the Exascale ...

  • Evaluating the roles of detailed endocardial structures on right ventricular haemodynamics by means of CFD simulations 

    Sacco, Federica; Paun, Bruno; Lehmkuhl, Oriol; Iles, Tinen L.; Iaizzo, Paul A.; Houzeaux, Guillaume; Vázquez, Mariano; Butakoff, Constantine; Aguado-Sierra, Jazmin (Wiley, 2018-09)
    Restricted access - publisher's policy
    Computational modelling plays an important role in right ventricular (RV) haemodynamic analysis. However, current approaches use smoothed ventricular anatomies. The aim of this study is to characterise RV haemodynamics ...

  • Large eddy simulation for automotive aerodynamics with Alya 

    Lehmkuhl, Oriol; Chrysokentis, Georgios; Gomez, Samuel; Owen, Herbert (2018-07-09)
    Conference lecture
    Open Access
    The prodigious potential offered by the ever-growing computing infrastructure is fostering the use of large eddy simulation for automotive aerodynamics. This approach, which resolves the larger dynamically important eddies ...

  • Mesh generation, sizing and convergence for onshore and offshore wind farm Atmospheric Boundary Layer flow simulation with actuator discs 

    Gargallo-Peiró, Abel; Avila, Matias; Owen, Herbert; Prieto-Godino, Luis; Folch, Arnau (Elsevier, 2018-12)
    Article
    Open Access
    A new mesh generation process for wind farm modeling is presented together with a mesh convergence and sizing analysis for wind farm flow simulations. The generated meshes are tailored to simulate Atmospheric Boundary Layer ...

  • Recent EUROfusion Achievements in Support of Computationally Demanding Multiscale Fusion Physics Simulations and Integrated Modeling 

    Voitsekhovitch, I.; Hatzky, R.; Coster, D.; Imbeaux, F.; McDonald, D.C.; Fehér, T.B.; Kang, K.S.; Leggate, H.; Martone, M.; Mochalskyy, S.; Sáez, Xavier; Ribeiro, T.; Tran, T.-M-; Gutierrez-Milla, A.; Aniel, T.; Figat, D.; Fleury, L.; Hoenen, O.; Hollocombe, J.; Kaljun, D.; Manduchi, G.; Owsiak, M.; Pais, V.; Palak, B.; Plociennik, M.; Signoret, J.; Vouland, C.; Yadykin, D.; Robin, F.; Iannone, F.; Bracco, G.; David, J.; Maslennikov, A.; Noé, J.; Rossi, E.; Kamendje, R.; Heuraux, S.; Hölzl, M.; Pinches, S.D.; da Silva, F.; Tskhakaya, D. (American Nuclear Society, 2018-02-21)
    Article
    Open Access
    Integrated modeling (IM) of present experiments and future tokamak reactors requires the provision of computational resources and numerical tools capable of simulating multiscale spatial phenomena as well as fast transient ...

  • Observations and modelling of ion cyclotron emission observed in JET plasmas using a sub-harmonic arc detection system during ion cyclotron resonance heating 

    McClements, K.G.; Brisset, A.; Chapman, B.; Dendy, R.O.; Jacquet, P.; Kiptily, V.G.; Mantsinen, Mervi; Reman, B.C.G.; JET Contributors (IOP Publishing:, 2018-07-10)
    Article
    Open Access
    Measurements are reported of electromagnetic emission close to the cyclotron frequency of energetic ions in JET plasmas heated by waves in the ion cylotron range of frequencies (ICRF). Hydrogen was the majority ion species ...

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