Enviaments recents

  • Numerical simulation of turbulence at lower costs: regularization modeling 

    Trias Miquel, Francesc Xavier; Gorobets, Andrei; Soria Guerrero, Manel; Oliva Llena, Asensio (2011)
    Comunicació de congrés
    Accés restringit per política de l'editorial
    This work is devoted to the development of efficient methods for the numerical simulation of incompressible flows on modern supercomputers. Direct simulation of the Navier-Stokes equations is nowadays an essential tool ...
  • Numerical resolution in a PCM accumulator in cryogenic conditions 

    Morales Ruíz, Sergio; Rigola Serrano, Joaquim; Castro González, Jesús; Oliva Llena, Asensio (2011)
    Comunicació de congrés
    Accés restringit per política de l'editorial
    A numerical study of the thermal and fluid-dynamic behaviour of the two-phase flow inside ducts working under cryogenic conditions, coupled with the analysis of a phase change material PCM accumulator is presented. The ...
  • Simulaton of absorption of H2O in falling film of LiBr aqueous in vertical tubes in wavy regime 

    García-Rivera, Eduardo; Castro González, Jesús; Farnós Baulenas, Joan; Oliva Llena, Asensio (2011)
    Comunicació de congrés
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    A mathematical model of falling film absorption of H2O by LiBr aqueous solutions which considers wavy regimes has been implemented. The model is semi-empirical, based on Navier Stokes equations together with energy and ...
  • Coupling CFD models of airflow with building simulation with an object-oriented and parallel infrastructure 

    Damle, Rashmin; Lehmkuhl Barba, Oriol; Rodríguez Pérez, Ivette María; Oliva Llena, Asensio (2012)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    Integrating CFD & HT models with the general building program raises the computational time of building simulations as these simulations are usually performed over a period of one year. Within this context, our aim is ...
  • Study of turbulent natural convection in a tall differentially heated cavity filled with either non-participating, participating grey and participating semigrey media 

    Capdevila Paramio, Roser; Lehmkuhl Barba, Oriol; Colomer Rey, Guillem; Pérez Segarra, Carlos David (Université de Poitiers, 2012)
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    Turbulent natural couvection in a tall differentially heated cavity of aspect ratio 5:1, filled with air under a Rayleigh number based on the height of 4.5.10(10), is studied numerically. Three different situations have ...
  • Numerical solutions for the fluid flow and the heat transfer of viscoplastic-type non-Newtonian fluids 

    Carmona Muñoz, Ángel; Pérez Segarra, Carlos David; Lehmkuhl Barba, Oriol; Oliva Llena, Asensio (Université de Poitiers, 2012)
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    The aim of this work is to provide numerical solutions for the fluid flow and the heat transfer generated in closed systems containing viscoplastic-type non-Newtonian fluids. A lid driven cavity (LDC) and a differentially ...
  • Three dimensional numerical simulations of combined conduction and radiation in transparent insulation material 

    Kessentini, Hamdi; Capdevila Paramio, Roser; Castro González, Jesús; Oliva Llena, Asensio (2012)
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    A coupled radiative and conductive three dimensional numerical model of transparent insulation material (TIM) is presented and the simulation results are compared with experimental results found in the literature. Since ...
  • Low Mach Navier-Stokes equations on unstructured meshes 

    Ventosa Molina, Jordi; Chiva Segura, Jorge; Lehmkuhl Barba, Oriol; Pérez Segarra, Carlos David; Oliva Llena, Asensio (2012)
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    Numerical methods for fluxes with strong density variations but with speeds much lower than the sound speed, known as low Mach flows, present some particularities with respect to incompressible formulations. Despite ...
  • Direct numerical simulation of the turbulent natural convection flow in an open cavity of aspect ratio 4 

    Chiva Segura, Jorge; Lehmkuhl Barba, Oriol; Borrell Pol, Ricard; Oliva Llena, Asensio (Begell House, 2012)
    Text en actes de congrés
    Accés obert
    In this paper, three-dimensional turbulent natural convection heat transfer in an open cavity with an isothermal wall facing the overture has been studied. The aspect ratio chosen for the cavity has been 4 to complement the ...
  • Large-eddy simulation of turbulent dynamic fluid-structure interaction 

    Estruch Pérez, Olga; Lehmkuhl Barba, Oriol; Borrell Pol, Ricard; Pérez Segarra, Carlos David (Begell House, 2012)
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  • Coherent structures in a flow past a circular cylinder at critical and super-critical Reynolds numbers 

    Rodríguez Pérez, Ivette María; Lehmkuhl Barba, Oriol; Chiva Segura, Jorge; Borrell Pol, Ricard; Oliva Llena, Asensio (Springer, 2015)
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    It is well known that the wake topology in the flow past a circular cylinder remains almost unchanged up to Reynolds number ~105 Williamson (Annu Rev Fluid Mech 28(1), 477–539 (1996)) [1]. Then, at Re~2×105 major changes ...
  • Study of stochastic models for subgrid dispersion in Lagrangian-Eulerian formulation 

    Muela Castro, Jordi; Lehmkuhl Barba, Oriol; Oliva Llena, Asensio (Springer, 2018)
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    Dispersed multiphase turbulent flows are present in many industrial and commercial applications like internal combustion engines, turbofans, dispersion of contaminants, steam turbines, etc. Therefore, there is a clear ...

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