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  • Fluid-structure interaction based on HPC multicode coupling 

    Cajas García, Juan Carlos; Houzeaux, Guillaume; Vazquez, Mariano; Garcia Gasulla, Marta; Casoni Rero, Eva; Calmet, Hadrien; Artigues, Antoni; Borrell Pol, Ricard; Lehmkuhl Barba, Oriol; Pastrana Maldonado, Daniel; Yáñez, David; Pons, Ramon; Martorell Lopez, Jordi (2018)
    Article
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    The fluid-structure interaction (FSI) problem has received great attention in the last few years, mainly because it is present in many physical systems, industrial applications, and almost every biological system. In the ...

  • On a Proper Tensor-Diffusivity Model for Large-Eddy Simulation of Buoyancy-Driven Turbulence 

    Trias Miquel, Francesc Xavier; Dabbagh, Firas; Gorobets, Andrei; Oliet Casasayas, Carles (Springer, 2020-03-26)
    Article
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    In this work, we aim to shed light to the following research question: can we find a nonlinear tensorial subgrid-scale (SGS) heat flux model with good physical and numerical properties, such that we can obtain satisfactory ...

  • Flow topology dynamics in a three-dimensional phase space for turbulent Rayleigh-Bénard convection 

    Dabbagh, Firas; Trias Miquel, Francesc Xavier; Gorobets, Andrey; Oliva Llena, Asensio (2020-02-28)
    Article
    Open Access

  • Eigensensitivity analysis of subgrid-scale stresses in large-eddy simulation of a turbulent axisymmetric jet 

    Jofre Cruanyes, Lluís (2019)
    Article
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    The study of complex turbulent flows by means of large-eddy simulation approaches has become increasingly popular in many scientific and engineering applications. The underlying filtering operation of the approach enables ...

  • A framework for characterizing structural uncertainty in large-eddy simulation closures 

    Jofre Cruanyes, Lluís (springer-Verlag, 2018)
    Article
    Open Access
    Motivated by the sizable increase of available computing resources, large-eddy simulation of complex turbulent flow is becoming increasingly popular. The underlying filtering operation of this approach enables to represent ...

  • A numerical approach for non-Newtonian two-phase flows using a conservative level-set method 

    Amani, Ahmad; Balcázar Arciniega, Néstor; Naseri, Alireza; Rigola Serrano, Joaquim (2020-04-01)
    Article
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    A finite-volume based conservative level-set method is presented to numerically solve the non-Newtonian multiphase flow problems. One set of governing equations is written for the whole domain, and different phases are ...

  • Numerical study of droplet deformation in shear flow using a conservative level-set method 

    Amani, Ahmad; Balcázar Arciniega, Néstor; Castro González, Jesús; Oliva Llena, Asensio (2019-11-02)
    Article
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    This paper is concerned with a numerical study on the behavior of a single Newtonian droplet suspended in another Newtonian fluid, all subjected to a simple shear flow. Conservative finite-volume approximation on a collocated ...

  • An energy-preserving level set method for multiphase flows 

    Valle Marchante, Nicolás; Trias Miquel, Francesc Xavier; Castro González, Jesús (2020-01-01)
    Article
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    The computation of multiphase flows presents a subtle energetic equilibrium between potential (i.e., surface) and kinetic energies. The use of traditional interface-capturing schemes provides no control over such a dynamic ...

  • A dynamic load balancing method for the evaluation of chemical reaction rates in parallel combustion simulations 

    Muela Castro, Jordi; Borrell Pol, Ricard; Ventosa Molina, Jordi; Jofre Roca, Lluís; Lehmkuhl Barba, Oriol; Pérez Segarra, Carlos David (Elsevier, 2019-08-15)
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    The development and assessment of an efficient parallelization method for the evaluation of reaction rates in combustion simulations is presented. Combustion simulations where the finite-rate chemistry model is employed ...

  • Thermal and fluid dynamic analysis of Direct Steam Generation Parabolic Trough Collectors 

    Ferchichi, Souha; Kessentini, Hamdi; Morales Ruíz, Sergio; Rigola Serrano, Joaquim; Bouden, Chiheb; Oliva Llena, Asensio (Elsevier, 2019-09-15)
    Article
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    Direct Steam Generation (DSG) has attracted considerable attention in comparison with conventional technologies based on Heat Transfer Fluids (HTF) for electricity generation due to its higher temperatures. In this context, ...

  • A level-set model for mass transfer in bubbly flows 

    Balcázar Arciniega, Néstor; Antepara Zambrano, Óscar; Rigola Serrano, Joaquim; Oliva Llena, Asensio (2019-08-01)
    Article
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    A level-set model is presented for simulating mass transfer or heat transfer in two-phase flows. The Navier-Stokes equations and mass transfer (or heat transfer) equation are discretized using a finite volume method on a ...

  • Experimental investigation of inlet distortion effect on performance of a micro gas turbine 

    Naseri, Alireza; Sammak, Shervin; Boroomand, Masoud; Alihosseini, Alireza; Tousi, Abolghasem M. (2018-09-01)
    Article
    Open Access
    An experimental study has been carried out to determine how inlet total-pressure distortion affects the performance of a micro gas turbine. An inlet simulator is designed and developed to produce and measure distortion ...

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