Ara es mostren els items 44-61 de 61

    • Numerical analysis of the shaft motion in the journal bearing of a gear pump 

      Castilla López, Roberto; Gutés Serra, Mario; Gámez Montero, Pedro Javier; Codina Macià, Esteban (2010-01)
      Article
      Accés restringit per política de l'editorial
      This paper describes a numerical analysis of the dynamics of the shaft in the journal bearing of a gear pump.
    • Numerical simulation of a supersonic ejector for vacuum generation with explicit and implicit solver in openfoam 

      Macià Cid, Llorenç; Castilla López, Roberto; Gámez Montero, Pedro Javier; Camacho, Sergi; Codina Macià, Esteban (2019-09-17)
      Article
      Accés obert
      Supersonic ejectors are used extensively in all kind of applications: compression of refrigerants in cooling systems, pumping of volatile fluids or in vacuum generation. In vacuum generation, also known as zero-secondary ...
    • Numerical simulations of the flow and aerosol dispersion in a violent expiratory event: Outcomes of the "2022 International Computational Fluid Dynamics Challenge on violent expiratory events" 

      Pallarès Curto, Jordi; Fabregat Tomàs, Alexandre; Lavrinenko, Akim; Castilla López, Roberto; Gámez Montero, Pedro Javier; Raush Alviach, Gustavo Adolfo; Calmet, Hadrien (2023-03-11)
      Article
      Accés obert
      This paper presents and discusses the results of the "2022 International Computational Fluid Dynamics Challenge on violent expiratory events" aimed at assessing the ability of different computational codes and turbulence ...
    • Numerical study in a mini trochoidal-gear pump with multi-meshing contact points 

      Gámez Montero, Pedro Javier; Castilla López, Roberto; Buza Barambones, Alexis; Khamashta Shahin, Munir Andrawes; Codina Macià, Esteban (American Society of Mechanical Engineers (ASME), 2016)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      A numerical study in a mini trochoidal-gear pump based on an ingenious strategy to adapt the background mesh to the profiles shape and a new boundary condition is presented. The strategy achieves a final background mesh ...
    • Numerical study of impingement location of liquid jet poured from a tilting ladle with lip spout 

      Castilla López, Roberto; Gámez Montero, Pedro Javier; Raush Alviach, Gustavo Adolfo; Khamashta Shahin, Munir Andrawes; Codina Macià, Esteban (2017-04)
      Article
      Accés obert
      A new approach for simulating liquid poured from a tilting lip spout is presented, using neither a dynamic mesh nor the moving solid solution method. In this case only the tilting ladle is moving, so we propose to rotate ...
    • Numerical study of the aerodynamics of sound sources in a bass-reflex port 

      García Alcaide, V. M.; Pallejà Cabré, S.; Castilla López, Roberto; Gámez Montero, Pedro Javier; Romeu Garbí, Jordi; Pàmies Gómez, Teresa; Amate, Joan; Milán, Natalia (Engineering Applications of Computational Fluid Mechanics, 2017-01-20)
      Article
      Accés obert
      The aim of this paper is to study the aerodynamics phenomena of a bass-reflex port that causes noise in the audible frequency range. After discarding structural and mechanical vibration issues, the hypothesis considered ...
    • Parameterization, modeling, and validation in real conditions of an external gear pump 

      Torrent Gelmà, Miquel; Gámez Montero, Pedro Javier; Codina Macià, Esteban (2021-03-11)
      Article
      Accés obert
      This article presents a methodology for predicting the fluid dynamic behavior of a gear pump over its operating range. Complete pump parameterization was carried out through standard tests, and these parameters were used ...
    • Particle dispersion in two-dimensional turbulence: a comparison with 2-D kinematic simulation 

      Castilla López, Roberto; Redondo Apraiz, José Manuel; Gámez Montero, Pedro Javier; Babiano, Armando (University of Thechnology and Agriculture Nicholas Copernicus University, 2007-03)
      Article
      Accés obert
      We study numerically the comparison between Lagrangian experiments on turbulent particle dispersion in 2-D turbulent flows performed, on the one hand, on the basis of direct numerical simulations (DNS) and, on the ...
    • Pressure effects on the performance of external gear pumps under cavitation 

      Campo Sud, David del; Castilla López, Roberto; Raush Alviach, Gustavo Adolfo; Gámez Montero, Pedro Javier; Codina Macià, Esteban (2014-11)
      Article
      Accés restringit per política de l'editorial
      The numerical analysis of an external gear pump with cavitation effects has been validated with experimental data obtained by applying Time-Resolved Particle Image Velocimetry. The effect of inlet and outlet pressure on ...
    • Pressure-drop coefficients for cushioning system of hydraulic cylinder with grooved piston: a computational fluid dynamic simulation 

      Castilla López, Roberto; Alemany, Ignasi; Algar, Antonio; Gámez Montero, Pedro Javier; Roquet, Pedro; Codina Macià, Esteban (2017-10-25)
      Article
      Accés obert
      Cushioning is an important aspect in hydraulic cylinder performance. The piston has to be decelerated before it strikes the end cap in order to avoid stresses in the cylinder components and reduce vibration that can be ...
    • Promoting lab engagement in experimental compressible flow modelling 

      Armengol Sans, Sílvia; Raush Alviach, Gustavo Adolfo; Gámez Montero, Pedro Javier (Universitat Politècnica de Catalunya, 2022-09)
      Text en actes de congrés
      Accés obert
      The present work depicts the development of an experimental equipment that reveals compressible fluid dynamics, while collecting data from an incompressible flow like water in an open-channel. It consists of an extensive ...
    • Promoting lab engagement in experimental compressible flow modelling 

      Armengol Sans, Sílvia; Raush Alviach, Gustavo Adolfo; Gámez Montero, Pedro Javier (European Society for Engineering Education (SEFI), 2022)
      Text en actes de congrés
      Accés obert
      The present work depicts the development of an experimental equipment that reveals compressible fluid dynamics, while collecting data from an incompressible flow like water in an open-channel. It consists of an extensive ...
    • Simulation of ejector for vacuum generation 

      Macià Cid, Llorenç; Castilla López, Roberto; Gámez Montero, Pedro Javier (Institute of Physics (IOP), 2019-10-31)
      Article
      Accés obert
      Supersonic ejectors are used in a wide range of applications such as compression of refrigerants in cooling systems, pumping of volatile fluids, or vacuum generation. The objective of the present paper is to mesh and ...
    • Study of the effect of vertical airfoil endplates on diffusers in vehicle aerodynamics 

      Porcar, Laura; Toet, Willem; Gámez Montero, Pedro Javier (Multidisciplinary Digital Publishing Institute, 2021-07-21)
      Article
      Accés obert
      Diffusers and the floor ahead of them create the majority of the downforce a vehicle creates. Outside motorsports, the diffuser is relatively unused, although its interaction with the ground is a consistent field of study ...
    • Taguchi techniques as an effective simulation-based strategy in the design of numerical simulations to assess contact stress in gerotor pumps 

      Gámez Montero, Pedro Javier; Bernat Masó, Ernest (2022-09-28)
      Article
      Accés obert
      The contact problem of a trochoidal gear is a drawback and a well-known performance indicator of a gerotor pump. Although numerical simulations aid in the evaluation of contact stress, the difficult task of determining ...
    • Thin liquid film entrainment by moving solids 

      Virto Albert, Saturnino-Luis; Gámez Montero, Pedro Javier (2015-06-18)
      Article
      Accés restringit per política de l'editorial
      The thin liquid film entrained by a continuous immersed solid pulled through a tank is of the main interest in many industrial processes. In order to appraise the state of art, it has been reviewed the experimental and ...
    • Three dimensional simulation of gerotor with deforming mesh by using OpenFOAM 

      Castilla López, Roberto; Gámez Montero, Pedro Javier; Raush Alviach, Gustavo Adolfo; Codina Macià, Esteban (2018)
      Text en actes de congrés
      Accés obert
      A new-born design and construction of a mini gerotor metering pump with trochoidal-teeth is presented. The technical innovation in this new-born design is to study the fluid dynamic effects of interteeth and lateral ...
    • Three-dimensional numerical simulation of an external gear pump with decompression slot and meshing contact point 

      Castilla López, Roberto; Gámez Montero, Pedro Javier; Campo Sud, David del; Raush Alviach, Gustavo Adolfo; García Vilchez, Mercedes; Codina Macià, Esteban (2015-04-01)
      Article
      Accés restringit per política de l'editorial
      Recently several works have been published on numerical simulation of an external gear pump (EGP). Such kinds of pumps are simple and relatively inexpensive, and are frequently used in fluid power applications, such as ...