Exploració per títol

Ara es mostren els items 70320-70339 de 245486

    • DNS of a Backward-Facing Step at high Reynolds number. Towards a better understanding of RANS-LES transition in DES models 

      Pont Vilchez, Arnau; Trias Miquel, Francesc Xavier; Oliva Llena, Asensio (2018)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      A DNS of an incompressible fluid flow over a Backward Facing Step (BFS ) with an Expansion Ratio (ER ) equal to 2, ER = H/(H - h), has been performed. Where h and H represent the step and the outlet heights, respectively. ...

    • 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 (Springer, 2019)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Mass transfer processes in bubbly flows are relevant in both nature and industry. Multiple examples arise from the so-called unit operations of the chemical engineering, where bubble columns are used for separation processes, ...

    • 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)
      Text en actes de congrés
      Accés restringit per política de l'editorial

    • DNS of falling droplets in a vertical channel 

      Balcázar Arciniega, Néstor; Castro González, Jesús; Chiva Segura, Jorge; Oliva Llena, Asensio (WIT Press, 2018-02-01)
      Article
      Accés obert
      This paper presents Direct Numerical Simulation (DNS) of the falling motion of single and multiple deformable drops in a vertical channel. A systematic study of the wall effect on the motion of single drop is performed for ...

    • DNS of Mass Transfer from Bubbles Rising in a Vertical Channel 

      Balcázar Arciniega, Néstor; Rigola Serrano, Joaquim; Oliva Llena, Asensio (Springer, 2019)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      This work presents Direct Numerical Simulation of mass transfer from buoyancy-driven bubbles rising in a wall-confined vertical channel, through a multiple markers level-set method. The Navier-Stokes equations and mass ...

    • DNS of Mass Transfer in Bi-dispersed Bubble Swarms 

      Balcázar Arciniega, Néstor; Rigola Serrano, Joaquim; Oliva Llena, Asensio (2022)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      This work presents Direct Numerical Simulation of mass transfer in a bi-dispersed bubble swarm at high Reynolds number, by using a multiple marker level-set method. Transport equations are discretized by the finite-volume ...

    • DNS of mass transfer in bi-dispersed bubbly flows in a vertical pipe 

      Balcázar Arciniega, Néstor; Rigola Serrano, Joaquim; Oliva Llena, Asensio (Springer, 2022)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Mass transfer in bubbly flows is ubiquitous in nature and industry. For instance, bubble chemical reactors and mass-transfer operations of chemical engineering (e.g., distillation columns) employ bubbly flows to produce ...

    • DNS of mass transfer in turbulent bubbly flow in a vertical pipe 

      Balcázar Arciniega, Néstor; Rigola Serrano, Joaquim; Oliva Llena, Asensio (2021)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The present research focuses on the DNS of mass transfer in gravity-driven turbulent bubbly flow in a vertical pipe, at a high Reynolds number (Re approximates to 1000). The objective is to compute the mass transfer ...

    • DNS of multiphase flows: study of atomization and free-surface phenomena 

      Schillaci, Eugenio (Universitat Politècnica de Catalunya, 2017-12-11)
      Tesi
      Accés obert
      The present thesis focuses on the numerical analysis of some diverse physical set-up that involve the interaction of two -or three immiscible and incompressible phases. The simulations are carried out by means of finite-volume ...

    • DNS of the rising motion of a swarm of bubbles in a confined vertical channel 

      Balcázar Arciniega, Néstor; Lehmkuhl Barba, Oriol; Castro González, Jesús; Oliva Llena, Asensio (Springer, 2018)
      Comunicació de congrés
      Accés restringit per política de l'editorial

    • DNS of the wall effect on the motion of bubble swarms 

      Balcázar Arciniega, Néstor; Castro González, Jesús; Rigola Serrano, Joaquim; Oliva Llena, Asensio (Elsevier, 2017)
      Text en actes de congrés
      Accés obert
      This paper presents a numerical study of the gravity-driven motion of single bubbles and bubble swarms through a vertical channel, using High-Performance Computing (HPC) and Direct Numerical Simulation (DNS) of the ...

    • DNS of thermocapillary migration of a bi-dispersed suspension of droplets 

      Balcázar Arciniega, Néstor; Rigola Serrano, Joaquim; Oliva Llena, Asensio (Springer, 2023)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The multiple markers unstructured conservative level-set method for two-phase flow with variable surface tension is applied in the Direct Numerical Simulation of thermocapillary-migration of a bi-dispersed suspension of ...

    • DNS of Thermocapillary Migration of Deformable Droplets 

      Balcázar Arciniega, Néstor; Antepara Zambrano, Óscar; Rigola Serrano, Joaquim; Oliva Llena, Asensio (Springer Nature, 2019)
      Text en actes de congrés
      Accés restringit per política de l'editorial

    • DNS of turbulent natural convection flows on the MareNostrum supercomputer 

      Trias Miquel, Francesc Xavier; Gorobets, Andrei; Soria Guerrero, Manel; Oliva Llena, Asensio (2009)
      Article
      Accés restringit per política de l'editorial
      A code for the direct numerical simulation (DNS) of incompressible turbulent flows that provides a fairly good scalability for a wide range of computer architectures has been developed. The spatial discretization of the ...

    • DNS of un-equal size droplets collision using a moving-mesh/level-set method 

      Amani, Ahmad; Balcázar Arciniega, Néstor; Gutiérrez Álvarez, Enrique; Oliva Llena, Asensio (2019)
      Text en actes de congrés
      Accés restringit per política de l'editorial

    • DNS of unequal size droplets collision using a moving-mesh/level-set method 

      Amani, Ahmad; Balcázar Arciniega, Néstor; Gutierrez, Enrique; Oliva Llena, Asensio (Springer, 2019)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The dynamics of binary droplets collision is of huge importance in different fields, from multiphase reactors (Dudukovic et al in Chem Eng Sci 54:1975–1995, 1999 [11]), raindrop formation, ink-jet printing, spray combustion, ...

    • DNS simulation environment to study email worm epidemics 

      Pujol Gil, Enric (Universitat Politècnica de Catalunya, 2008-01)
      Projecte/Treball Final de Carrera
      Accés obert

    • DNS/LES using a minimal set of algebraic Kernels: challenges and opportunities 

      Trias Miquel, Francesc Xavier; Álvarez Farré, Xavier; Alsalti Baldellou, Àdel; Gorobets, Andrei; Oliva Llena, Asensio (Parallel Computational Fluid Dynamics (ParCFD), 2022)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      In the last decades, CFD has become a standard design tool in many fields such as automotive, aeronautical and wind power industries. The driven force behind this is the development of numerical techniques in conjunction ...

    • DNSCHARM : Denisse Chacon Armenta Portfolio 

      Chacón Armenta, Martha Denisse (Universitat Politècnica de Catalunya, 2020-01)
      Treball Final de Grau
      Accés obert

    • Do board gender quotas affect how people perceive firms? A study of the California board gender quota law with Twitter sentiment data 

      Toran Mercadé, Daniel (Universitat Politècnica de Catalunya, 2022-10-20)
      Projecte Final de Màster Oficial
      Accés obert
      Realitzat a/amb:   HEC Paris
      The first compulsory board gender diversity quota law in the United States was approved in 2018 in California. In this study, we aim to analyse how public perception has been influenced by the application of this gender ...