Enviaments recents

  • Fast urban flow predictions through Convolutional Neural Networks 

    Calafell Sandiumenge, Joan; Bustillo, Jaime; Gomez Gonzalez, Samuel; Ramírez Jávega, Francisco; Radhakrishnan, Sarath; Lehmkuhl Barba, Oriol (2023)
    Text en actes de congrés
    Accés obert
    Having real-time and accurate numerical predictions of urban wind flow can be extremely useful for developing tools intended to improve citizens’ life quality and health. However, traditional methods such as Computational ...
  • Magnetically induced gluing bifurcations of three-tori in spherical Couette flows 

    García González, Fernando (American Institute of Physics (AIP), 2023-11-27)
    Article
    Accés obert
    The global dynamics of three-tori associated with homoclinic/heteroclinic global (infinite period) bifurcations are investigated for the magnetized spherical Couette problem, a paradigmatic model in geo- and astrophysical ...
  • Flow regime analysis of high-pressure transcritical fluids in microducts 

    Bandarrinha Monteiro, Carlos Alexandre; Jofre Cruanyes, Lluís (2024-06)
    Article
    Accés obert
    Microduct flows are known for their inherent laminar regimes resulting from the characteristic small dimensions and low velocities. In this regard, direct numerical simulations are employed to investigate an innovative ...
  • A hybrid control-oriented PEMFC model based on echo state networks and gaussian radial basis functions 

    Aguilar Plazaola, José Agustín; Chanal, Damien; Chamagne, Didier; Yousfi-Steiner, Nadia; Péra, Marie-Cécile; Husar, Attila Peter; Andrade-Cetto, Juan (2024-01-01)
    Article
    Accés obert
    The goal of increasing efficiency and durability of fuel cells can be achieved through optimal control of their operating conditions. In order to implement such controllers, accurate and computationally efficient fuel cell ...
  • State machine-based architecture to control system processes in a hybrid fuel cell electric vehicle 

    Molavi, Ali; Husar, Attila Peter; Hjortberg, Hampus; Nilsson, Niclas; Kogler, Markus; Monreal, Juan Sanchez; Eldigair, Yousif; Serra, Maria (Elsevier, 2023-07-20)
    Article
    Accés obert
    This paper presents the development and implementation of a system supervisory controller in a hydrogen-based fuel cell electric vehicle. The controller's primary function is to ensure the safe control of the fuel cell ...
  • Exploring the artificial compressibility method in high-pressure transcritical fluids 

    Abdellatif, Ahmed Mohammed Abdelfattah; Ventosa Molina, Jordi; Grau Barceló, Joan; Torres Cámara, Ricardo; Jofre Cruanyes, Lluís (International Centre for Numerical Methods in Engineering (CIMNE), 2023)
    Text en actes de congrés
    Accés obert
    This work presents the investigation of a solution to accelerate computations of high-pressure transcritical fluids at low-Mach number regimes based on the artificial compressibility method. The highly adaptable nature of ...
  • Experimental control of a methanol catalytic membrane reformer 

    Cifuentes López, Alejandro; Serra, Maria; Torres Cámara, Ricardo; Llorca Piqué, Jordi (Multidisciplinary Digital Publishing Institute (MDPI), 2023-11-06)
    Article
    Accés obert
    A simple proportional integral (PI) controller with scheduled gain has been developed and implemented in a catalytic membrane reactor (CMR) to obtain pure hydrogen from a methanol steam reforming process. The controller ...
  • Artificial compressibility method for high-pressure transcritical fluids at low Mach numbers 

    Abdellatif, Ahmed Mohammed Abdelfattah; Ventosa Molina, Jordi; Grau Barceló, Joan; Torres Cámara, Ricardo; Jofre Cruanyes, Lluís (Elsevier, 2024-02-15)
    Article
    Accés obert
    Supercritical fluids possess unique properties that makes them relevant in various scientific and engineering applications. However, the experimental investigation of these fluids is challenging due to the high pressures ...
  • Cost vs accuracy: DNS of turbulent flow over a sphere using structured immersed-boundary, unstructured finite-volume, and spectral-element methods 

    Capuano, Francesco; Beratlis, Nikolaos; Zhang, Fengrui; Peet, Yulia; Squires, Kyle; Balaras, Elias (Elsevier, 2023-11-01)
    Article
    Accés restringit per política de l'editorial
    We report a comparative study of three numerical solvers for the direct numerical simulation of the flow over a sphere at Re = 3700. A high-order spectral-element code (Nek5000), a general purpose, unstructured finite-volume ...
  • Performance and error analysis of structure-preserving time-integration procedures for incompressible-flow simulations 

    de Michele, Carlo; Artiano, Marco; Capuano, Francesco; Coppola, Gennaro (European Research Community on Flow, Turbulence, and Conbustion (ERCOFTAC), 2023)
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    The effects of kinetic-energy preservation errors due to Runge-Kutta (RK) temporal integrators have been analyzed for the case of large-eddy simulations of incompressible turbulent channel flow. Simulations have been run ...
  • Cost vs. accuracy: second-order vs. high-order methods for eddy-resolving simulations of turbulent separated flows 

    Capuano, Francesco; Beratlis, Nikolaos; Zhang, Fengrui; Peet, Yulia; Squires, Kyle; Balaras, Elias (European Research Community on Flow, Turbulence, and Conbustion (ERCOFTAC), 2023)
    Text en actes de congrés
    Accés obert
    We report a comparative study of three numerical solvers for the direct numerical simulation of the flow over a sphere at Re = 3700. A high-order spectral-element code (Nek5000), a general purpose, unstructured finite-volume ...
  • Fluid dynamics of right ventricular filling in the presence of pulmonary regurgitation: assessment using DNS and 4D Flow MRI 

    Yildiran, Ibrahim; Capuano, Francesco; Loke, Yue Hin; Olivieri, Laura Jean; Balaras, Elias (European Research Community on Flow, Turbulence, and Conbustion (ERCOFTAC), 2023)
    Text en actes de congrés
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