Recent Submissions

  • Parametric study of structured thermocline storage systems 

    Vera i Fernández, Jordi; Sanmartí Perona, Oriol; Torras Ortiz, Santiago; Pérez Segarra, Carlos David (2022)
    Conference report
    Restricted access - publisher's policy
    A thermal accumulator system for concentrated solar power is modeled to perform a parametric study. The thermal accumulation system is a type of structured thermocline where there is a solid filler material with some ...
  • Optimized approach for CFD simulations of HVAC systems with grill air diffusers 

    Vera i Fernández, Jordi; Schillaci, Eugenio; Rigola Serrano, Joaquim; Oliet Casasayas, Carles (International Institute of Refrigeration, 2023)
    Conference report
    Restricted access - publisher's policy
    A proper CFD simulation of air distribution within a room requires the correct representation of inlet conditions from ventilation grids. Those elements are usually characterized by blades with a certain inclination angle ...
  • DNS and RANS simulations of a coil heat exchanger immersed in a tank 

    Vera i Fernández, Jordi; Torras Ortiz, Santiago; Schillaci, Eugenio; Oliva Llena, Asensio (Begell House, 2023)
    Conference lecture
    Restricted access - publisher's policy
    The operation of heat exchangers in a thermal system can be described by simple heat transfer equations. The heat exchange is normally defined by a global heat transfer coefficient, which takes into account internal and ...
  • Assessment of LES models for a fully developed windturbine array boundary layer 

    Folch Flórez, David; Trias Miquel, Francesc Xavier; Oliva Llena, Asensio (Begell House, 2023)
    Conference report
    Restricted access - confidentiality agreement
    Direct numerical simulations of the incompressible Navier-Stokes equations at high Reynolds numbers are not yet feasible, so dynamically less complex mathematical formulations such as Large Eddy Simulation (LES) have been ...
  • Strategies for increasing the arithmetic intensity on ensemble averaged parallel-in-time simulations 

    Plana Riu, Josep; Trias Miquel, Francesc Xavier; Alsalti Baldellou, Àdel; Oliva Llena, Asensio (Parallel Computational Fluid Dynamics (ParCFD), 2023)
    Conference report
    Restricted access - confidentiality agreement
    Extracting flow statistics from flow simulations requires generally long in- tegration intervals in which a good deal of the time is spent time-averaging the results. In order to avoid this, ensemble averaging can be applied ...
  • Combustion and air flows simulations of an industrial kiln for sanitary ware manufacture 

    Liu, Jiannan; Ruano Pérez, Jesús; Schillaci, Eugenio; Rigola Serrano, Joaquim; Pérez Segarra, Carlos David (Begell House, 2023)
    Conference lecture
    Restricted access - publisher's policy
    The implementation of green hydrogen as fuel in industrial kilns, such as those required in ceramic ware manufacturing processes, would be a disruptive milestone in the decarbonization process of the energyintensive industry. ...
  • Reliable overnight industrial LES: challenges and limitations. Application to CSP technologies 

    Alsalti Baldellou, Àdel; Colomer Rey, Guillem; Hopman, Johannes Arend; Álvarez Farré, Xavier; Gorobets, Andrei; Trias Miquel, Francesc Xavier; Pérez Segarra, Carlos David; Oliva Llena, Asensio (European Research Community on Flow, Turbulence, and Conbustion (ERCOFTAC), 2023)
    Conference report
    Open Access
    Preserving the operators’ symmetries at the discrete level is crucial to enable reliable DNS and LES simulations of turbulent flows. Moreover, real-world applications demand robust and stable numerical methods suitable for ...
  • On a conservative solution to checkerboarding: examining the causes of non-physical pressure modes 

    Hopman, Johannes Arend; Alsalti Baldellou, Àdel; Trias Miquel, Francesc Xavier; Oliva Llena, Asensio (European Research Community on Flow, Turbulence, and Conbustion (ERCOFTAC), 2023)
    Conference report
    Open Access
    In computational fluid dynamics (CFD), the checkerboard problem remains a challenging issue when employing collocated grid arrangements for complex geometries. It manifests as oscillatory and non-physical pressure modes, ...
  • On a high-order energy-preserving unconditionally stable discretization on collocated unstructured grids 

    Santos Serrano, Daniel; Trias Miquel, Francesc Xavier; Verstappen, R.W.C.P.; Pérez Segarra, Carlos David (European Research Community on Flow, Turbulence, and Conbustion (ERCOFTAC), 2023)
    Conference report
    Open Access
    In this work, an energy-preserving unconditionally stable fractional step method on collocated unstructured grids is presented. Its formulation is based on preserving the underlying symmetries of the differential operators. ...
  • Robust and reliable DNS and LES on unstructured grids 

    Trias Miquel, Francesc Xavier; Hopman, Johannes Arend; Santos Serrano, Daniel; Gorobets, Andrei; Oliva Llena, Asensio (European Research Community on Flow, Turbulence, and Conbustion (ERCOFTAC), 2023)
    Conference report
    Open Access
    Preserving the operators symmetries at discrete level is the key aspect to enable reliable DNS and LES simulations of turbulent flows. On the other hand, realworld applications demand robust and stable numerical methods ...
  • Numerical assessment of parcel modeling in large eddy simulation for dispersed multiphase flows 

    Bahramian, Linda; Trias Miquel, Francesc Xavier; Oliet Casasayas, Carles; Pérez Segarra, Carlos David (2023)
    Conference report
    Open Access
    The particle-laden turbulent flow benchmark case of a confined jet by Hishida (1987) was selected for validation purposes of the Eulerian-Lagrangian method in Large Eddy Simulation (LES). After validation, a particle size ...
  • Pressure-velocity coupling on unstructured collocated grids: reconciling stability and energy-conservation 

    Santos Serrano, Daniel; Trias Miquel, Francesc Xavier; Hopman, Johannes Arend; Pérez Segarra, Carlos David (Begell House, 2023)
    Conference report
    Restricted access - publisher's policy
    In this work, an energy-preserving unconditionally stable fractional step method on collocated unstructured grids is presented. Its formulation is based on preserving the underlying symmetries of the differential operators. ...

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