Articles de revista

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  • 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
    Open Access
    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 ...

  • A review of gerotor technology in hydraulic machines 

    Gámez Montero, Pedro Javier; Codina Macià, Esteban; Castilla López, Roberto (2019-06-24)
    Article
    Open Access
    Over the years, numerous investigations have established the gerotor fundamentals. This work aims to provide a complete review of the literature from the last decade, focusing on the articles published in the past five ...

  • A novel method to determine the discharge coefficient of constant section nozzles under compressible dynamic flow conditions 

    Comas Amengual, Ángel; Río Cano, Carlos; Bergadà Granyó, Josep Maria (2019-07)
    Article
    Restricted access - publisher's policy
    The present paper introduces a novel transient experimental method employed to determine the discharge coefficient of constant section nozzles of small diameters of 1 to 3 mm and with a length/diameter ratio of around one. ...

  • Bond graph simulation of error propagation in position estimation of a hydraulic cylinder using low cost accelerometers 

    Algar, Antonio; Codina Macià, Esteban; Freire Venegas, Francisco Javier (2018-10-01)
    Article
    Open Access
    The indirect calculation from acceleration of transversal displacement of the piston inside the body of a double effect linear hydraulic cylinder during its operating cycle is assessed. Currently an extensive effort exists ...

  • A simplified methodology to evaluate the design specifications of hydraulic components 

    Roquet, Pedro; Gámez Montero, Pedro Javier; Castilla López, Roberto; Raush Alviach, Gustavo Adolfo; Codina Macià, Esteban (Multidisciplinary Digital Publishing Institute, 2018-09-11)
    Article
    Open Access
    The fatigue of a hydraulic component inherently varies due to various factors that can be divided into two categories: structural and load spectrum variability. The effects of both variabilities must be considered when ...

  • Additioning alfa fibres in cement mortar 

    Bernat Masó, Ernest; Puigvert Cobos, Francesc; Abdelmoulac, Hichem; Gil Espert, Lluís (Universidad Católica de Chile (UC), 2018)
    Article
    Open Access
    Cement mortar is a broadly used construction material. Adding fibres into the fresh mortar is an effective reinforcing technique to overcome the drawbacks related with the little tensile and flexural strength. Using natural ...

  • Mechanical performance of vegetal fabric reinforced cementitious matrix (FRCM) composites 

    Mercedes Cedeño, Luis Enrique; Gil Espert, Lluís; Bernat Masó, Ernest (Elsevier, 2018-06-30)
    Article
    Restricted access - publisher's policy
    In order to pursue sustainable objectives in the construction industry, a new composite material using vegetal fibre mesh coated with resin and embedded in mortar is developed and characterized. In this study, meshes of ...

  • 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
    Open Access
    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 ...

  • Magnet-sleeve-sealed mini trochoidal-gear pump prototype with polymer composite gear 

    Gámez Montero, Pedro Javier; Antoniak, Piotr; Castilla López, Roberto; Freire Venegas, Francisco Javier; Krawczyk, Justyna; Stryczek, Jaroslaw; Codina Macià, Esteban (2017-09-21)
    Article
    Open Access
    The trochoidal-gear technology has been growing in groundbreaking fields. Forthcoming applications are demanding to this technology a step forward in the conceiving stage of positive displacement machines. The compendium ...

  • Experimental study of 3D movement in cushioning of hydraulic cylinder 

    Algar, Antonio; Codina Macià, Esteban; Freire Venegas, Francisco Javier (2017-05-25)
    Article
    Open Access
    A double acting cylinder operation has been fully monitored in its key functional parameters, focused on characterization of end-of-stroke cushioning and starting phases. Being the cylinder performance reliant in the piston ...

  • Method for fluid flow simulation of a gerotor pump using OpenFOAM 

    Castilla López, Roberto; Gámez Montero, Pedro Javier; Raush Alviach, Gustavo Adolfo; Codina Macià, Esteban (2017-07-21)
    Article
    Restricted access - publisher's policy
    A new approach based on the open source tool OpenFOAM is presented for the numerical simulation of a mini gerotor pump working at low pressure. The work is principally focused on the estimation of leakage flow in the ...

  • Experimental study on the impulsion port of a trochoidal wheeled pump 

    Raush Alviach, Gustavo Adolfo; Gámez Montero, Pedro Javier; Castilla López, Roberto; Codina Macià, Esteban (2017-06-01)
    Article
    Open Access
    All positive displacement pumps produce a pulsating flow. The present paper reports the experimental measurement of steady flow pulsations in the outlet of the internal wheeled pump. In the measured flow, the manufacturing ...

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