Ara es mostren els items 1-12 de 84

    • 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)
      Text en actes de congrés
      Accés restringit per acord de confidencialitat
      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)
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      Accés restringit per acord de confidencialitat
      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)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      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)
      Text en actes de congrés
      Accés obert
      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)
      Text en actes de congrés
      Accés obert
      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)
      Text en actes de congrés
      Accés obert
      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)
      Text en actes de congrés
      Accés obert
      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)
      Text en actes de congrés
      Accés obert
      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)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      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. ...
    • An Energy-preserving unconditionally stable fractional step method for DNS/LES on collocated unstructured grids 

      Santos Serrano, Daniel; Trias Miquel, Francesc Xavier; Colomer Rey, Guillem; Oliva Llena, Asensio (Springer, 2022)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      A finite-volume discretization over unstructured meshes is the most used formulation to solve Navier-Stokes equations by many general purpose CFD packages codes such as OpenFOAM or ANSYS-Fluent.
    • On a conservative solution to checkerboarding: examining the discrete Laplacian kernel using mesh connectivity 

      Hopman, Johannes Arend; Trias Miquel, Francesc Xavier; Rigola Serrano, Joaquim (Springer, 2022)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      CFD codes that are used for industrial applications commonly use a collocated grid arrangement to calculate the physical flow variables. When using a central differencing gradient (CDG) to discretise the continuous operators ...
    • On the large-eddy simulation of a fully developed wind-turbine array boundary layer 

      Folch Flórez, David; Trias Miquel, Francesc Xavier; Oliva Llena, Asensio (European Research Community on Flow, Turbulence, and Conbustion (ERCOFTAC), 2023)
      Comunicació de congrés
      Accés obert
      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 ...