Now showing items 1-12 of 216

    • Design and execution of a verification, validation, and uncertainty quantification plan for a numerical model of left ventricular flow after LVAD implantation 

      Santiago, Alfonso; Butakoff, Constantine; Eguzkitza, Beatriz; Gray, Richard A.; May-Newman, Karen; Pathmanathan, Pras; Vu, Vi; Vázquez, Mariano (Public Library of Science, 2022-06)
      Article
      Open Access
      BACKGROUND: Left ventricular assist devices (LVADs) are implantable pumps that act as a life support therapy for patients with severe heart failure. Despite improving the survival rate, LVAD therapy can carry major ...
    • Overview of JET results for optimising ITER operation 

      Mailloux, Joelle; Abid, N.; Abraham, K.; Abreu, Paulo; Adabonyan, O.; Adrich, P.; Gadariya, G.; Gallart Escolà, Daniel; Manyer Fuertes, Jordi; Mantsinen, Mervi Johanna (2022)
      Article
      Open Access
      The JET 2019–2020 scientific and technological programme exploited the results of years of concerted scientific and engineering work, including the ITER-like wall (ILW: Be wall and W divertor) installed in 2010, improved ...
    • Introducing polyglot-based data-flow awareness to time-series data stores 

      García Calatrava, Carlos; Becerra Fontal, Yolanda; Cucchietti, Fernando (Institute of Electrical and Electronics Engineers (IEEE), 2022-06-30)
      Article
      Open Access
      The rising interest in extracting value from data has led to a broad proliferation of monitoring infrastructures, most notably composed by sensors, intended to collect this new oil. Thus, gathering data has become fundamental ...
    • Systematic Comparison of Tsunami Simulations on the Chilean Coast Based on Different Numerical Approaches 

      Harig, Sven; Zamora, Natalia; Gubler, Alejandra; Rakowsky, Natalja (MDPI, 2022-06)
      Article
      Open Access
      Tsunami inundation estimates are of crucial importance to hazard and risk assessments. In the context of tsunami forecast, numerical simulations are becoming more feasible with the growth of computational power. Uncertainties ...
    • Dynamic resource allocation for efficient parallel CFD simulations 

      Houzeaux, Guillaume; Badia Sala, Rosa Maria; Borrell Pol, Ricard; Dosimont, Damien; Ejarque Artigas, Jorge; García Gasulla, Dario; López Herrero, Víctor (Elsevier, 2022-06-28)
      Article
      Restricted access - publisher's policy
      CFD users of supercomputers usually resort to rule-of-thumb methods to select the number of subdomains (partitions) when relying on MPI-based parallelization. One common approach is to set a minimum number of elements or ...
    • Discriminating the occurrence of inundation in tsunami early warning with one-dimensional convolutional neural networks 

      Núñez, Jorge; Catalán, Patricio A.; Valle, Carlos; Zamora, Natalia; Valderrama, Alvaro (Nature Research, 2022-06)
      Article
      Open Access
      Tsunamis are natural phenomena that, although occasional, can have large impacts on coastal environments and settlements, especially in terms of loss of life. An accurate, detailed and timely assessment of the hazard is ...
    • A hybrid meshing framework adapted to the topography to simulate atmospheric boundary layer flows 

      Gargallo Peiró, Abel; Avila, Matias; Folch, Arnau (Elsevier, 2022)
      Article
      Restricted access - publisher's policy
      A new topography adapted mesh generation framework tailored to simulate Atmospheric Boundary Layer (ABL) flows on complex terrains is presented. The mesher is fully automatic given: the maximum and minimum surface mesh ...
    • The power threshold of H-mode access in mixed hydrogen–tritium and pure tritium plasmas at JET with ITER-like wall 

      Birkenmeier, Gregor; Solano, Emilia R; Lerche, E.; Taylor, David; Gallart Escolà, Dani; Mantsinen, Mervi (IOP Publishing, 2022-05-24)
      Article
      Open Access
      The heating power to access the high confinement mode (H-mode), PLH, scales approximately inversely with the isotope mass of the main ion plasma species as found in (protonic) hydrogen, deuterium and tritium plasmas in ...
    • Validation of tsunami numerical simulation models for an idealized coastal industrial site 

      Watanabe, Masashi; Arikawa, Taro; Kihara, Naoto; Tsurudome, Chiaki; Hosaka, Koichi; Houzeaux, Guillaume (World Scientific Publishing, 2022)
      Article
      Open Access
      Numerous tsunami numerical models have been proposed, but their prediction accuracies have not been directly compared. For quantifying the modeling uncertainties, the authors statistically analyzed the prediction results ...
    • Enabling dynamic and intelligent workflows for HPC, data analytics, and AI convergence 

      Ejarque Artigas, Jorge; Badia Sala, Rosa Maria; Becerra Fontal, Yolanda; Rodrigo Berlín, Julián; Folch Duran, Arnau; Lordan Gomis, Francesc; Monterrubio Velasco, Marisol; de la Puente, Josep; Queralt Calafat, Anna; Rodríguez Rodríguez, Juan E.; Rossi, Riccardo (Elsevier, 2022-09)
      Article
      Restricted access - publisher's policy
      The evolution of High-Performance Computing (HPC) platforms enables the design and execution of progressively larger and more complex workflow applications in these systems. The complexity comes not only from the number ...
    • Effect of inclusion of pitch-angle dependence on a simplified model of RF deposition in tokamak plasma 

      Taylor, David; Mantsinen, Mervi J.; Gallart Escolà, Dani; Manyer Fuertes, Jordi; Sirén, P.; JET Contributors (IOP Publishing, 2022-04)
      Article
      Open Access
      Using the PION ICRH modelling code and comparisons against JET tokamak experiments, the effect of including pitch angle dependence within the RF diffusion operator on the fast ion particle distribution functions is quantified. ...
    • Parametric and model uncertainties induced by reduced order chemical mechanisms for biogas combustion 

      Freitas, Rodolfo S.M; Rochinha, Fernando A.; Mira, Daniel; Jiang, Xi (Elsevier, 2020)
      Article
      Open Access
      This study investigates the impact of chemical kinetic uncertainties on biogas combustion using a Uncertainty Quantification (UQ)-based methodology. The results indicate that the variation of physicochemical properties ...