Now showing items 13-24 of 60

    • Wakes and instabilities of static and freely vibrating cylinders 

      Rodríguez Pérez, Ivette María; Lehmkuhl, Oriol; Pastrana Maldonado, Daniel; Cajas García, Juan Carlos; Houzeaux, Guillaume (Springer, 2019)
      Conference report
      Open Access
      The flow around static and freely vibrating cylinders are of interest in understanding different phenomena encountered in many practical applications.
    • A constellation of horrors: analysis and visualization of the #Cuéntalo movement 

      Bucalo Mana, María Soledad; Calvo, Luz; Cucchietti, Fernando; García Povedano, David; García Sáez, Artur; Gómez Celis, Juan Felipe; Arcadio González, Camilo; Marín, Guillermo; Reyes, Patricio; Serra Burriel, Feliu; Vélez García, Diana Fernanda; Meta, Irene (Association for Computing Machinery (ACM), 2019)
      Conference report
      Open Access
      In this work, we analyze content and structure of the Twitter trending topic #cuentalo with the purpose of providing a visualization of the movement. A supervised learning methodology is used to train the classifying ...
    • Local bisection for conformal refinement of unstructured 4D simplicial meshes 

      Belda Ferrín, Guillem; Gargallo Peiró, Abel; Roca Navarro, Francisco Javier (Springer, 2018)
      Conference report
      Open Access
      We present a conformal bisection procedure for local refinement of 4D unstructured simplicial meshes with bounded minimum shape quality. Specifically, we propose a recursive refine to conformity procedure in two stages, ...
    • Defining a stretching and alignment aware quality measure for linear and curved 2D meshes 

      Aparicio Estrems, Guillermo; Gargallo Peiró, Abel; Roca Navarro, Francisco Javier (Springer, 2018)
      Conference report
      Open Access
      We define a regularized shape distortion (quality) measure for curved high-order 2D elements on a Riemannian plane. To this end, we measure the deviation of a given 2D element, straight-sided or curved, from the stretching ...
    • A semantic model to fight social exclusion 

      Ortiz Santiago, Víctor Alejandro; Estañol Lamarca, Montserrat; Marinescu, Maria Cristina; Sancho Samsó, María Ribera; Teniente López, Ernest; Rueda Palenzuela, Carmen (Institute of Electrical and Electronics Engineers (IEEE), 2019)
      Conference lecture
      Open Access
      This work presents a semantic model meant to help with the identification and prediction of individuals at risk of social exclusion. The model is based on the self-sufficiency matrix, a tool that evaluates a person's ...
    • Long short-term memory networks for earthquake detection in Venezuelan regions 

      Mus León, Sergi; Gutiérrez Escobar, Norma; Tous Liesa, Rubén; Otero Calviño, Beatriz; Cruz de la Cruz, Stalin Leonel; Llácer Giner, David; Alvarado Bermúdez, Leonardo; Rojas, Otilio (Springer, 2019)
      Conference lecture
      Open Access
      Reliable earthquake detection and location algorithms are necessary to properly catalog and analyze the continuously growing seismic records. This paper reports the results of applying Long Short-Term Memory (LSTM) networks ...
    • Noise Radiated by an Open Cavity at Low Mach Number 

      Martín Navarrete, Rocío; Soria Guerrero, Manel; Lehmkuhl, Oriol; Gorobets, Andrei; Cante Terán, Juan Carlos; Vidal Pairot, Pere (2018)
      Conference report
      Restricted access - publisher's policy
      The present work focuses on the study of noise generation and radiation of unsteady laminar flow over an open three dimensional cavity at low Mach number, that is of interest to understand noise generation mechanisms in ...
    • 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 ...
    • A Massively Parallel Algorithm for the Approximate Calculation of Inverse p-th Roots of Large Sparse Matrices 

      Lass, Michael; Mohr, Stephan; Wiebeler, Hendrik; Kühne, Thomas D.; Plessl, Christian (Association for Computing Machinery (ACM), 2018-07)
      Conference lecture
      Open Access
      We present the submatrix method, a highly parallelizable method for the approximate calculation of inverse p-th roots of large sparse symmetric matrices which are required in different scientific applications. Following ...
    • On the boundary layer development and heat transfer from a sphere at moderate Reynolds numbers 

      Rodríguez Pérez, Ivette María; Lehmkuhl, Oriol; Soria Guerrero, Manel; Gómez, Samuel; Domínguez Pumar, Manuel; Kowalski, Lukasz (2018)
      Conference report
      Restricted access - publisher's policy
      Direct and large-eddy numerical simulations have been performed for a heated sphere at Reynolds numbers 200, 300, 500, 750, 1000 and 104, in the context of the development of a spherical wind sensor for Mars atmosphere ...
    • 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)
      Conference lecture
      Open Access
      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 ...
    • Modelling of combined ICRF and NBI heating in JET hybrid plasmas 

      Gallart, Dani; Mantsinen, Mervi; Challis, Clive; Frigione, Domenico; Graves, Jonathan; Hobirk, Joerg; Belonohy, Eva; Czarnecka, Agata; Eriksson, Jacob; Goniche, Marc; Hellesen, Carl; Jacquet, Philippe; Joffrin, Emmanuel; Krawczyk, Natalia; King, Damian; Lennholm, Morten; Lerche, Ernesto; Pawelec, Ewa; Sips, George; Solano, Emilia; Tsalas, Maximos; Valisa, Marco; JET Contributors (EDP Sciences, 2017-10-23)
      Article
      Open Access
      During the 2015-2016 JET campaigns many efforts have been devoted to the exploration of high performance plasma scenarios envisaged for ITER operation. In this paper we model the combined ICRF+NBI heating in selected key ...