Enviaments recents

• Parametric study of structured thermocline storage systems 

  Vera i Fernández, Jordi; Sanmartí Perona, Oriol; Torras Ortiz, Santiago; Pérez Segarra, Carlos David (2022)
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  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)
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  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)
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  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 ...
• Energy analysis of resilient cooling technologies in Mediterranean buildings – A case study 

  Capdevila Paramio, Roser; Garrido Soriano, Núria; Tontodonati, Enrico (International Building Performance Simulation Association (IBPSA), 2023)
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  Buildings represent 40% of energy consumption and residential buildings accounted for 27% of final energy consumption in Europe. It could be even more due to the effects of climate change. The severity of weather will ...
• Recent developments in the design of a new air-cooled, hot-water-driven H2O-LiBr absorption chiller 

  Castro González, Jesús; Oliva Llena, Asensio; Pérez Segarra, Carlos David; Oliet Casasayas, Carles (ASHRAE, 2008)
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  This paper explains the up-to-date stage of development of an air-cooled H2O-LiBr absorption chiller. The methodology of development is based on the systematic application of advanced numerical and experimental techniques, ...
• Exa, zetta, yotta and beyond: on the evolution of Poisson solvers 

  Trias Miquel, Francesc Xavier; Alsalti Baldellou, Àdel; Oliva Llena, Asensio (Parallel Computational Fluid Dynamics (ParCFD), 2023)
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  In this work, we aim to shed light to the following research question: is the complexity of numerically solving Poisson’s equation increasing or decreasing for very large DNS and LES simulations of incompressible flows? ...
• Low-rank corrections for increasing the arithmetic intensity of the preconditioners 

  Alsalti Baldellou, Àdel; Janna, Carlo; Álvarez Farré, Xavier; Trias Miquel, Francesc Xavier (Parallel Computational Fluid Dynamics (ParCFD), 2023)
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  Spatial reflection symmetries are common in many academic and industrial CFD configurations. Given a mesh with s symmetries, it is possible to transform Poisson’s equation into a set of 2^s fully-decoupled subsystems. By ...
• 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)
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  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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  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 ...
• A coupled LSVOF-adaptive mesh refinement-moving mesh technique to study complex multiphase problems 

  Amani, Ahmad; Pérez Segarra, Carlos David; Oliva Llena, Asensio (Begell House, 2023)
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  The Piecewise-Linear-Interface-Calculation (PLIC) reconstruction algorithm in the Volume-of-Fluid (VOF) method is widely used in numerical simulations of interfacial flows across various fields. However, a significant ...
• Unstructured Conservative Level-Set (UCLS) method for mass transfer in bubble swarms with high physical properties ratios 

  Balcázar Arciniega, Néstor; Rigola Serrano, Joaquim; Oliva Llena, Asensio (Begell House, 2024)
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  This work introduces a parallel Unstructured Conservative Level-Set (UCLS) method for reactive mass transfer in two-phase flows with a high-density ratio. The proposed method employs the multiple-marker approach to circumvent ...
• 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)
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  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. ...

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