Ponències/Comunicacions de congressos

Recent Submissions

  • Parallel Unstructured Conservative Level-Set (UCLS) method for liquid-vapor phase change phenomena 

    Balcázar Arciniega, Néstor; Rigola Serrano, Joaquim; Oliva Llena, Asensio (Forschungszentrum Jülich GmbH, 2024)
    Conference report
    Restricted access - publisher's policy
    This work introduces a parallel unstructured conservative level-set method for liquid-vapor phase change phenomena. The finite-volume method discretizes transport equations on three-dimensional collocated unstructured ...

  • Thermal digital twin of a LH2 aircraft storage tank 

    Oliet Casasayas, Carles; Mosqueda Otero, Marcial Francisco; Schillaci, Eugenio; Amani, Ahmad; Rigola Serrano, Joaquim; Castro González, Jesús (Multidisciplinary Digital Publishing Institute (MDPI), 2024)
    Conference lecture
    Open Access
    The decarbonisation of the economy is impacting all activities and sectors worldwide. Transport and particularly aircraft are involved in this endeavour; shifting to an H2-powered aircraft is one of the identified options, ...

  • Study of photonic radiative coolers based on semispheres for silicon photovoltaic cells 

    Silva-Oelker, Gerardo; Jaramillo Fernández, Juliana (Optica Publishing Group, 2022)
    Conference report
    Restricted access - publisher's policy
    We propose a photonic structure of semispheres for radiative cooling of silicon photovoltaic cells. Two materials are studied numerically: soda-lime and polydimethyl-siloxane. Results show an output power increment of ~ ...

  • Heat Transfer Modeling in Server Refrigeration: A 0D-1D Transient Box 

    Vera i Fernández, Jordi; Oliet Casasayas, Carles; Kizildag, Deniz; Rigola Serrano, Joaquim; Oliva Llena, Asensio; Sanmartí Perona, Oriol (Purdue University, 2024)
    Conference report
    Open Access
    A 0D-lD transient and computationally inexpensive model is used to simulate the thermal behavior of a server that is placed in an exterior environment. This model consists of N-interconnected boxes that are modeled with a ...

  • Lightweight AMG preconditioners for CFD simulations on symmetric domains 

    Alsalti Baldellou, Àdel; Janna, Carlo; Álvarez Farré, Xavier; Trias Miquel, Francesc Xavier (2024)
    Conference report
    Open Access
    Divergence constraints appear in the governing equations of many physical phenomena, often leading to a Poisson equation whose solution is one of the most challenging parts of incompressible CFD codes. Algebraic Multigrid ...

  • Mathematical and Numerical Approach of Encapsulated Phase Change Material in Structured Thermocline Systems 

    Sanmartí Perona, Oriol; Vera i Fernández, Jordi; Torras Ortiz, Santiago; Pérez Segarra, Carlos David (2024)
    Conference report
    Open Access
    An unsteady one-dimensional computational model has been developed to investigate the integration of encapsulated phase change materials in a structured thermal energy storage system. The model has been validated against ...

  • On the Conditions for a Stable Projection Method on Collocated Unstructured Grids 

    Santos Serrano, Daniel; Hopman, Johannes Arend; Pérez Segarra, Carlos David; Trias Miquel, Francesc Xavier (2024)
    Conference report
    Open Access
    In this work, the conditions for a projection method, such as FSM or PISO, to be unconditionally stable are discussed for staggered and collocated configurations. In this regard, energy stability is guaranteed by preserving ...

  • On the Evaluation of Large Eddy Simulation of a Wind-turbine Array Boundary Layer 

    Folch Flórez, David; Trias Miquel, Francesc Xavier; Oliva Llena, Asensio (2024)
    Conference report
    Open Access
    Direct numerical simulations of the incompressible Navier-Stokes equations at higher Reynolds numbers are not yet feasible, so dynamically less complex mathematical formulations such as Large Eddy Simulation (LES) have ...

  • A One-Dimensional Model and the Influence of the Mass Flow Rate in a Structured Thermal Energy Storage System for Concentrated Solar Power Plants 

    Sanmartí Perona, Oriol; Vera i Fernández, Jordi; Torras Ortiz, Santiago; Pérez Segarra, Carlos David (Springer, 2024)
    Conference report
    Restricted access - publisher's policy
    This study presents a one-dimensional model to simulate structured thermocline thermal energy storage tanks. The structure consists of a solid filler material made of waste ceramic products and a series of channels through ...

  • Thermal modeling of industrial environments using transient 0D and 1D models 

    Vera i Fernández, Jordi; Pavon Montoliu, Octavi; Oliva Llena, Asensio; Kizildag, Deniz; Sanmartí Perona, Oriol; Alcalá Hidalgo, Domingo (Purdue University, 2024)
    Conference report
    Open Access
    This work presents a fast and simplified numerical model designed to simulate the temporal evolution of temperature and humidity within industrial and residential buildings. A case study of an industrial plant in Spain is ...

  • Cost-accuracy analysis for symmetry-preserving methods 

    Hopman, Johannes Arend; Alsalti Baldellou, Àdel; Rigola Serrano, Joaquim; Trias Miquel, Francesc Xavier (International Centre for Numerical Methods in Engineering (CIMNE), 2024)
    Conference report
    Open Access
    Reducing computational cost is of essence to make computational fluid dynamics as a viable tool for industrial design purposes. This work focuses on increasing solution accuracy by applying the symmetry-preserving method, ...

  • Numerical Study of an Inertial Particle Separator Efficiency Under the Effect of Ice Accretion Caused by the Water Impingement 

    Bahramian, Linda; Amani, Ahmad; Rigola Serrano, Joaquim; Oliet Casasayas, Carles; Pérez Segarra, Carlos David (International Centre for Numerical Methods in Engineering (CIMNE), 2024)
    Conference report
    Open Access
    The inertial particle separator (IPS) can face ice accretion due to the impingement of super-cooled water droplets on its inner surface. This work studies a numerical study using Computational Fluid Dynamics (CFD) for the ...

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