Enviaments recents

  • New differential operators and discretization methods for large-eddy simulation and regularization modeling 

    Trias Miquel, Francesc Xavier; Gorobets, Andrei; Pérez Segarra, Carlos David; Oliva Llena, Asensio (International Association for Computational Mechanics (IACM), 2014)
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    Direct numerical simulations (DNS) of the incompressible Navier-Stokes equations are limited to relatively low-Reynolds numbers. Therefore, dynamically less complex mathematical formulations are necessary for coarse-grain ...
  • Analysis of IAQ based on modeling of building envelope coupled with CFD&HT room airflow 

    Capdevila Paramio, Roser; Lehmkuhl Barba, Oriol; Rigola Serrano, Joaquim; López Mas, Joan; Oliva Llena, Asensio (Purdue University, 2014)
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    Buildings represent a major part of the world energy requirement. The simulation of combined heat, air and moisture (HAM) and pollutant transfer in this context is important to predict the indoor air quality (IAQ), along ...
  • Numerical analysis of suction mufflers 

    Rigola Serrano, Joaquim; López Mas, Joan; Papakokkinos, Giorgos; Lehmkuhl Barba, Oriol; Oliva Llena, Asensio (Purdue University, 2014)
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    The aim of this paper is to present the numerical resolution of suction muffler configurations (by means of a tridimensional, unstructured, parallel and object oriented CFD&HT TermoFluids code (Lehmkuhl, et al. 2007) ...
  • Characteristics of the near wake region behind a cylinder at critical and super-critical Reynolds numbers 

    Rodríguez Pérez, Ivette María; Lehmkuhl Barba, Oriol; Chiva Segura, Jorge; Borrell Pol, Ricard; Oliva Llena, Asensio (Begell House, 2015)
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    Large-eddy simulations (LES) of the flow past a circular cylinder are used to investigate the characteristics of the near wake region at Reynolds numbers Re = 2.5 × 105 - 8.5 × 105. This range encompasses both the critical ...
  • A dynamic wall model for large eddy simulation on unstructured meshes. Application to wind turbine dedicated airfoils 

    Calafell Sandiumenge, Joan; Lehmkuhl Barba, Oriol; Rodríguez Pérez, Ivette María; Oliva Llena, Asensio; Pérez Segarra, Carlos David (Begell House, 2015)
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    Large eddy simulations (LES) of wall resolved flows at high Reynolds number are still computation-ally demanding. In the present work, a new Dynamic Wall Model (DWM) for LES is presented. The methodology, implemented on ...
  • Non-Oberbeck-Boussinesq effects in a turbulent tall water-filled differentially heated cavity 

    Kizildag, Deniz; Rodríguez Pérez, Ivette María; Trias Miquel, Francesc Xavier; Oliva Llena, Asensio; Pérez Segarra, Carlos David (Begell House, 2015)
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    The present work studies the non-Oberbeck-Boussinesq (NOB) effects in a tall water-filled differentially heated cavity by means of direct numerical simulation. The obtained results reveal significant NOB effects for this ...
  • Building a new subgrid characteristic length for LES 

    Trias Miquel, Francesc Xavier; Gorobets, Andrey; Duben, Alexey; Oliva Llena, Asensio (Keldysh Institute of Applied Mathematics, 2016)
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  • Parallel object-oriented algorithms for building performance simulation. Application to an existing dwelling 

    López Mas, Joan; Capdevila Paramio, Roser; Souaihi, Oussama; Rigola Serrano, Joaquim; Oliva Llena, Asensio (Purdue University, 2017)
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    In the present work an existing dwelling, situated in the Netherlands, has been modeled by means of a parallel object-oriented simulation tool, called NEST-Buildings. The model is based on a pre-defined collection of ...
  • On the use of a parallel object-oriented code for solving the heat transfer in hermetic reciprocating compressors 

    López Mas, Joan; Rigola Serrano, Joaquim; Lehmkuhl Barba, Oriol; Oliva Llena, Asensio (Purdue University, 2016)
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    The heat transport phenomenon in a hermetic reciprocating compressor is addressed in this work. This is far from straightforward. It involves several transient physical phenomena interacting to each other. The heat is ...
  • 3D compressible simulation of a muffler with pseudosound prediction levels 

    Ruano Pérez, Jesús; López Mas, Joan; Lehmkuhl Barba, Oriol; Rigola Serrano, Joaquim; Pérez Segarra, Carlos David (Purdue University, 2016)
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    The main objective of this paper is to present a numerical resolution of a suction muffler configuration by using an in-house object oriented CFD & HT code TermoFluids (Lehmkuhl et al. 2007), able to handle tridimensional ...

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