Now showing items 1-19 of 19

    • A comparative study of interface capturing methods with amr for incompressible two-phase flows 

      Antepara Zambrano, Óscar; Balcázar Arciniega, Néstor; Oliva Llena, Asensio (CIMNE, 2017)
      Conference report
      Open Access
      This paper presents a comparative study of interface capturing methods with adaptive mesh refinement for Direct Numerical Simulation (DNS) of incompressible two- phase flows. The numerical algorithms for fluid motion ...
    • A level-set method for interfacial heat or mass transfer in two-phase flows 

      Balcázar Arciniega, Néstor; Antepara Zambrano, Óscar; Rigola Serrano, Joaquim; Oliva Llena, Asensio (International Centre for Numerical Methods in Engineering (CIMNE), 2018)
      Conference lecture
      Restricted access - publisher's policy
      A level-set model is proposed for simulating interfacial heat or mass transfer in two-phase flows. The Navier-Stokes equations as well as the heat transfer or mass transfer equations are discretized using a finite-volume ...
    • A level-set method for mass transfer in bubble swarms 

      Balcázar Arciniega, Néstor; Antepara Zambrano, Óscar; Castro González, Jesús; Oliva Llena, Asensio (2018)
      Conference lecture
      Restricted access - publisher's policy
    • 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
      Open Access
      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 ...
    • A low-dissipation convection scheme for the stable discretization of turbulent interfacial flow 

      Schillaci, Eugenio; Jofre Cruanyes, Lluís; Balcázar Arciniega, Néstor; Antepara Zambrano, Óscar; Oliva Llena, Asensio (Elsevier, 2017-08-10)
      Article
      Open Access
      This paper analyzes a low-dissipation discretization for the resolution of immiscible, incompressible multiphase flow by means of interface-capturing schemes. The discretization is built on a three-dimensional, unstructured ...
    • A numerical study of liquid atomization regimes by means of conservative level-set simulations 

      Schillaci, Eugenio; Antepara Zambrano, Óscar; Balcázar Arciniega, Néstor; Rigola Serrano, Joaquim; Oliva Llena, Asensio (Elsevier, 2019-01-30)
      Article
      Open Access
      In this work, a conservative level-set finite-volume solver for interface-capturing is employed to perform the direct numerical simulation of Liquid Jets discharging into a quiescent air chamber. The scope is to propose a ...
    • An immersed boundary method to conjugate heat transfer problems in complex geometries. Application to an automotive antenna 

      Favre, F.; Antepara Zambrano, Óscar; Oliet Casasayas, Carles; Lehmkuhl Barba, Oriol; Pérez Segarra, Carlos David (2019-02-05)
      Article
      Open Access
      Considering that the most common reason for electronic component failure is the excessive temperature level, an efficient thermal management design can prolong the operating life of the equipment, while also increasing its ...
    • Direct numerical simulation of multiphase flows with unstable interfaces 

      Schillaci, Eugenio; Lehmkuhl, Oriol; Antepara Zambrano, Óscar; Oliva Llena, Asensio (Institute of Physics (IOP), 2016-09-01)
      Article
      Open Access
      This paper presents a numerical model that intends to simulate efficiently the surface instability that arise in multiphase flows, typically liquid-gas, both for laminar or turbulent regimes. The model is developed on the ...
    • Direct numerical simulation of rising bubble with path instability 

      Antepara Zambrano, Óscar; Balcázar Arciniega, Néstor; Rigola Serrano, Joaquim; Oliva Llena, Asensio (2018)
      Conference report
      Restricted access - publisher's policy
      Present research is focused on combining High- Performance Computing (HPC) and Direct Numerical Simulation (DNS) of two-phase flows, to study the dy- namic behavior of rising bubble whit path instabilities with moderate/high ...
    • DNS of drag-force and reactive mass transfer in gravity-driven bubbly flows 

      Balcázar Arciniega, Néstor; Antepara Zambrano, Óscar; Rigola Serrano, Joaquim; Oliva Llena, Asensio (2019)
      Conference report
      Restricted access - publisher's policy
    • DNS of Thermocapillary Migration of Deformable Droplets 

      Balcázar Arciniega, Néstor; Antepara Zambrano, Óscar; Rigola Serrano, Joaquim; Oliva Llena, Asensio (Springer Nature, 2019)
      Conference report
      Restricted access - publisher's policy
    • Effectiveness of adaptive mesh refinement strategies in the DNS of multiphase flows 

      Schillaci, Eugenio; Antepara Zambrano, Óscar; Lehmkuhl Barba, Oriol; Balcázar Arciniega, Néstor; Oliva Llena, Asensio (Begell House, 2015)
      Conference report
      Restricted access - publisher's policy
      In this work, a finite-volume Adaptive Mesh Refinement (AMR) method for two phase flows able to dynamically achive the required mesh size in specific parts of the domain has been developed. The Navier-Stokes equations for ...
    • Large-eddy simulations of turbulent flow around a wall-mounted cube using an adaptive mesh refinement approach 

      Antepara Zambrano, Óscar; Lehmkuhl Barba, Oriol; Oliva Llena, Asensio; Favre, Federico (2013)
      Conference report
      Restricted access - publisher's policy
      In the present work two LES models for predicting turbulent flow and an Adaptive Mesh Refinement (AMR) technique are proposed and tested for a fully 3D geometry: turbulent flow around a wall-mounted cube at Reh=7235. The ...
    • Numerical study of an impulse wave generated by a sliding mass 

      Schillaci, Eugenio; Favre Samarra, Federico; Antepara Zambrano, Óscar; Balcázar Arciniega, Néstor; Oliva Llena, Asensio (WIT Press, 2018)
      Article
      Open Access
      In this work, a numerical framework for the direct numerical simulation of tsunami waves generated by landslide events is proposed. The method, implemented on the TermoFluids numerical platform, adopts a free surface model ...
    • Numerical study of rising bubbles with path instability using conservative level-set and adaptive mesh refinement 

      Antepara Zambrano, Óscar; Balcázar Arciniega, Néstor; Rigola Serrano, Joaquim; Oliva Llena, Asensio (Elsevier, 2019-06-15)
      Article
      Open Access
      This paper focuses on three-dimensional direct numerical simulations of rising bubbles in the wobbling regime, and the study of its dynamical behavior for Eötvös number 1  ≤  Eo  ≤  10 and Morton number 1e−11  ≤ M ≤  1e−9. ...
    • On the fast transient spoiler deployment in a NACA0012 profile using LES techniques combined with AMR and IMB methods 

      Favre Samarra, Federico; Antepara Zambrano, Óscar; Lehmkuhl Barba, Oriol; Borrell Pol, Ricard; Oliva Llena, Asensio (2014)
      Conference report
      Restricted access - publisher's policy
    • Parallel adaptive mesh refinement for large-eddy simulations of turbulent flows 

      Antepara Zambrano, Óscar; Lehmkuhl Barba, Oriol; Borrell Pol, Ricard; Chiva Segura, Jorge; Oliva Llena, Asensio (Elsevier, 2015-03-30)
      Article
      Open Access
      In this paper a parallel adaptive mesh refinement (AMR) strategy for large eddy simulations (LES) of turbulent flows is presented. The underlying discretization of the Navier-Stokes equations is based on a finite-volume ...
    • Parallel mesh multiplication and adaptation technique for turbulent flow simulation using unstructured meshes 

      Antepara Zambrano, Óscar; Lehmkuhl Barba, Oriol; Borrell Pol, Ricard; Oliet Casasayas, Carles; Oliva Llena, Asensio (2015)
      Conference report
      Restricted access - publisher's policy
      In this paper, we report the development of a parallel mesh multiplication code to subdivide a base mesh (containing tetrahedral, pyramids, prisms or hexahedral) into a finer mesh without user intervention, taking care of ...
    • Tetrahedral adaptive mesh refinement for two-phase flows using conservative level-set method 

      Antepara Zambrano, Óscar; Balcázar Arciniega, Néstor; Oliva Llena, Asensio (2021-02)
      Article
      Restricted access - publisher's policy
      In this article, we describe a parallel adaptive mesh refinement strategy for two-phase flows using tetrahedral meshes. The proposed methodology consists of combining a conservative level-set method with tetrahedral adaptive ...