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  • Three-dimensional numerical simulation of an external gear pump with decompression slot and meshing contact point

     Castilla Lopez, Roberto; Gamez Montero, Pedro Javier; Del Campo Sud, David; Raush Alviach, Gustavo Adolfo; García Vílchez, Mercedes; Codina Macià, Esteban
    Journal of fluids engineering. Transactions of ASME
    DOI: 10.1115/1.4029223
    Date of publication: 2014-11-12
    Journal article

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    Recently several works have been published on numerical simulation of an external gear pump. Such kind of pumps are simple and relatively inexpensive, and are frequently used in fluid power applications, such as fluid power in aeronautical, mechanical and civil engineering. Nevertheless, considerable effort is being undertaken to improve efficiency and reduce noise and vibration produced by the flow and pressure pulsations. Numerical simulation of an external gear pump is not straightforward principally due to two reasons. Firstly, the gearing mechanism between gears makes difficult to handle a dynamic mesh without a considerable decrement of cells quality. Secondly, the dynamic metal-metal contact simulation is important when high pressure outflow has to be reproduced. The numerical studies published so far are based in a two-dimensional approximation. The aim of the present work is to contribute to the understanding of the fluid flow inside an external gear pump by means of a complete three-dimensional parallel simulation on a cluster. The three-dimensional flow is simulated in a linux cluster with a solver developed with the OpenFoam Toolbox. The hexahedral mesh quality is maintained by periodically replacing the mesh and interpolating the physical magnitudes fields. The meshing contact point is simulated with the viscous wall approach, using a viscosity model based on wall proximity. The results for the flow rate ripples show a similar behavior to that obtained with two-dimensional simulations. However, the flow presents important differences inside the suction and the discharge chambers, principally in the regions of the pipes connection. Moreover, the decompression slot below the gearing zone, that can not be simulated with a two-dimensional approximation, enables a more realistic simulation of a contact ratio larger than 1. The results are compared with experimental measurements recently published.

  • Pressure effects on the performance of external gear pumps under cavitation

     Del Campo Sud, David; Castilla Lopez, Roberto; Raush Alviach, Gustavo Adolfo; Gamez Montero, Pedro Javier; Codina Macià, Esteban
    Proceedings of the Institution of Mechanical Engineers. Part C, journal of mechanical engineering science
    Vol. 228, num. 16, p. 2925-2937
    DOI: 10.1177/0954406214522990
    Date of publication: 2014-11
    Journal article

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    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 volumetric efficiency has been studied numerically. First, the Particle Image Velocimetry method was used to analyze the two-dimensional velocity field in the middle plane of the suction chamber of the gear pump. The main improvement, with respect to previous similar analysis is the use of alginate micro particles as tracers. It is seen that the two-dimensional model is able to characterize the flow field of the real pump in the region of the inlet chamber in which cavitation is expected. In a previous study, it was seen that a cavitation cloud acted as a virtual contact point at low pressure, being responsible for an increase on the volumetric efficiency. The first set of simulations represents the pump working with high outlet pressure. Now, the cavitation cloud is not present and cavitation no longer helps to improve the efficiency of the pump. The second set of simulations represents the pump with an inlet loss factor, which implies a mean inlet pressure below atmospheric conditions. This allows cavitation clouds to propagate upstream. Despite the larger cavitation clouds, volumetric efficiency only drops at high operating velocities, when some clouds become trapped between gears and casing and are transported to the pressure side.

  • Design tools applied to a trochoidal gear pump  Open access

     García Vílchez, Mercedes
    Universitat Politècnica de Catalunya
    Theses

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    Las bombas de desplazamiento positive, en su diseño actual, producen pulsaciones de caudal significantes que resultan en pulsaciones de presión. Estas pulsaciones contribuyen al ruido global generado por la instalación. Además, interactúan con el sistema al cual se encuentra conectada la bomba, reduciendo la vida útil tanto de la bomba como de los componentes del circuito. La bomba rotativa de engranajes trocoidales, un tipo de máquina rotativa de desplazamiento volumétrico, tiene características que hacen que sea adecuada en muchos campos de aplicación. Actualmente, en casos como la aditivación o la dosificación, estas aplicaciones no han sido completamente desarrolladas, y prestan un creciente potencial en el mundo industrial, como en nuevas generaciones de motores diesel o en aplicaciones médicas. La tesis presenta un conjunto de herramientas de diseño aplicadas a bombas de engranajes trocoidales, desde el punto de vista del comportamiento fluidodinámico de la bomba. Estas herramientas de diseño están orientadas a ayudar a la mejora de dos de los principales índices de la bomba: la capacidad volumétrica y la irregularidad en el caudal, dirigiendo al diseñador a nuevos diseños de bombas gerotor más eficientes. Por un lado, la capacidad volumétrica está relacionada con la eficiencia de la bomba, e incrementos en este índice resultan en una mayor eficiencia de la bomba. Por otro lado, la irregularidad en el caudal mide el las fluctuaciones en el caudal generado por la bomba, y reduciendo este índice, la vida útil de la bomba y de la instalación puede ser aumentada, ya que fenómenos como la fatiga se ven atenuados. Esto se consigue a través del uso de procedimientos analíticos, de simulación y experimentales. Desde el punto de vista analítico, se han creado dos nuevos módulos para el software GeroLAB Package, denominados Minimum Clearance Module y Effective Port Areas. También se ha llevado a cabo una simulación dinámica de BondGraph, estudiando la influencia de la geometría de las lumbreras. En esta tesis, el modelo se ha mejorado añadiendo la información de las secciones efectivas de las lumbreras, obteniendo así un modelo más realista. En relación con la simulación numérica, se presenta un modelo de dinámica de fluidos computacional (CFD) tridimensional y con malla deformable. El modelo incluye los efectos de las tolerancias de fabricación y las fugas en el interior de la bomba. Además, también se estudia la influencia de simular los puntos de contactos entre dientes. Se crea una nueva condición de contorno para la simulación del contacto sólido en las holguras radiales entre dientes, establecida como una condición fluidodinámica. El estudio experimental de la bomba se lleva a cabo mediante resolución en tiempo de Velocimetría de Imágenes de Partículas (TRPIV). Esta técnica se adapta a la bomba gerotor, y las medidas obtenidas son capturas en la tubería de salida y en las cámaras entre perfiles trocoidales. Los resultados se evalúan cualitativamente gracias a las herramientas analíticas y de simulación. El procedimiento experimental presentados responde a la necesidad de una metodología para medir de manera directa el caudal generado por la bomba, con una técnica no intrusiva. Constituye una alternativa al método de la fuente secundaria, y es la primera aproximación de TRPIV aplicado a una bomba de engranajes trocoidales, de acuerdo con el conocimiento de la autora.

    Positive displacements pumps, as currently designed, produce significant flow pulsations that result in pressure pulsations. These pulsations contribute to the global noise generated by the installation. Moreover, they interact with the system where the pump is connected shortening the life of both the pump and circuit components. Rotary trochoidal gear pump, a type of rotary positive displacement machine, has characteristics that make it suitable for many applications fields. Nowadays, in cases like additivation and dosage, these applications have not been completely developed, and present a growing potential in the industrial world, such as in new diesel engines generation or in medical applications. The thesis presents a set of design tools applied to trochoidal gear pumps, from the viewpoint of the fluid dynamical performance of the pump. These design tools are aimed to help improving two of the main performance indices of the pump: the volumetric capacity and the flow irregularity, leading the designer to more efficient new designs of gerotor pumps. On the one hand, the volumetric capacity is related with the pump's efficiency, and increases in this particular index result in a higher efficiency of the pump. On the other hand, flow irregularity measures de flow ripple generated by the pump, and by reducing this index, the life of both the pump and the installation can be extended, as phenomena like fatigue are attenuated. This is achieved through the use of analytical, simulation and experimental procedures. From the analytical side, two new modules of GeroLAB Package are created, Minimum Clearance Module and Effective Port Areas. Also, a dynamical simulation through BondGraph is conducted, studying the influence of the port areas geometry. In the present thesis, the model has been improved by adding the information of the effective port areas, thus making it more realistic. Regarding the numerical simulation, a three-dimensional with deforming mesh Computational Fluid Dynamics model is presented. The model includes the effects of the manufacturing tolerance and the leakage inside the pump. Also, the influence of simulating the contact points is studied. A new boundary condition is created for the simulation of the solid contact in the interteeth radial clearance, established as a fluid-dynamic condition. The experimental study of the pump is carried out by means of Time-Resolved Particle Image Velocimetry. This technique is developed in order to adapt it to the gerotor pump, and measurements are captures in the outlet pipe and in the chambers between trochoidal profiles. Results are qualitatively evaluated thanks to the analytical and simulation tools. The presented experimental procedure meets the need of a methodology to directly measure the flow ripple generated by the pump, with a non-intrusive technique. It constitutes an alternative to the Secondary Source Method, and it is the first approach of Time-Resolved Particle Image Velocimetry applied to a trochoidal gear pump, according to the author's knowledge.

    Las bombas de desplazamiento positivo, en su diseño actual, producen pulsaciones de caudal significantes que resultan en pulsaciones de presión. Estas pulsaciones contribuyen al ruido global generado por la instalación. Además, interactúan con el sistema al cual se encuentra conectada la bomba, reduciendo la vida útil tanto de la bomba como de los componentes del circuito. La bomba rotativa de engranajes trocoidales, un tipo de máquina rotativa de desplazamiento volumétrico, tiene características que hacen que sea adecuada en muchos campos de aplicación. Actualmente, en casos como la aditivación o la dosificación, estas aplicaciones no han sido completamente desarrolladas, y prestan un creciente potencial en el mundo industrial, como en nuevas generaciones de motores diesel o en aplicaciones médicas. La tesis presenta un conjunto de herramientas de diseño aplicadas a bombas de engranajes trocoidales, desde el punto de vista del comportamiento fluidodinámico de la bomba. Estas herramientas de diseño están orientadas a ayudar a la mejora de dos de los principales índices de la bomba: la capacidad volumétrica y la irregularidad en el caudal, dirigiendo al diseñador a nuevos diseños de bombas gerotor más eficientes. Por un lado, la capacidad volumétrica está relacionada con la eficiencia de la bomba, e incrementos en este índice resultan en una mayor eficiencia de la bomba. Por otro lado, la irregularidad en el caudal mide el las fluctuaciones en el caudal generado por la bomba, y reduciendo este índice, la vida útil de la bomba y de la instalación puede ser aumentada, ya que fenómenos como la fatiga se ven atenuados. Esto se consigue a través del uso de procedimientos analíticos, de simulación y experimentales. Desde el punto de vista analítico, se han creado dos nuevos módulos para el software GeroLAB Package, denominados Minimum Clearance Module y Effective Port Areas. También se ha llevado a cabo una simulación dinámica de BondGraph, estudiando la influencia de la geometría de las lumbreras. En esta tesis, el modelo se ha mejorado añadiendo la información de las secciones efectivas de las lumbreras, obteniendo así un modelo más realista. En relación con la simulación numérica, se presenta un modelo de dinámica de fluidos computacional (CFD) tridimensional y con malla deformable. El modelo incluye los efectos de las tolerancias de fabricación y las fugas en el interior de la bomba. Además, también se estudia la influencia de simular los puntos de contactos entre dientes. Se crea una nueva condición de contorno para la simulación del contacto sólido en las holguras radiales entre dientes, establecida como una condición fluidodinámica. El estudio experimental de la bomba se lleva a cabo mediante resolución en tiempo de Velocimetría de Imágenes de Partículas (TRPIV). Esta técnica se adapta a la bomba gerotor, y las medidas obtenidas son capturas en la tubería de salida y en las cámaras entre perfiles trocoidales. Los resultados se evalúan cualitativamente gracias a las herramientas analíticas y de simulación. El procedimiento experimental presentados responde a la necesidad de una metodología para medir de manera directa el caudal generado por la bomba, con una técnica no intrusiva. Constituye una alternativa al método de la fuente secundaria, y es la primera aproximación de TRPIV aplicado a una bomba de engranajes trocoidales, de acuerdo con el conocimiento de la autora

  • Innovadora minibomba de engranajes magneticos, compacta y estanca, aplicada a la microdosificación

     Freire Venegas, Francisco Javier; Raush Alviach, Gustavo Adolfo; Rio Cano, Carlos; Castilla Lopez, Roberto; Gamez Montero, Pedro Javier
    Competitive project

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  • Flexible rod design for educational wind balance

     Raush Alviach, Gustavo Adolfo; Castilla Lopez, Roberto; Gamez Montero, Pedro Javier; Wojciechowski, Jakub; Codina Macià, Esteban
    Experimental techniques
    DOI: 10.1111/ext.12047
    Date of publication: 2013-08-05
    Journal article

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    This article provides a technical description of a flexible hinge for wind tunnel rigs. For academic purposes, the device was integrated into several rod flexures to build a home-made external wind balance system. The cylindrical elastic element incorporates several notches, and the flexure linkage is able to transmit force in the main axial direction without hindering perpendicular movement. The flexural element described here is simple and easily manufactured, and can also be used with other types of wind balance. The flexure described in this article has similar functionality to those mentioned in the reference section, but has a more compact element. The project's effectiveness was demonstrated in a series of experimental comparisons of forces and moments measured on a wing using the N.A.C.A. Clark-Y airfoil profile.

  • ROBUST, AND FLEXIBLE CAST IRON MANUFACTURING

     Khamashta Shahin, Munir; Gamez Montero, Pedro Javier; Castilla Lopez, Roberto; Raush Alviach, Gustavo Adolfo; Freire Venegas, Francisco Javier; Torres Lopez, Antonio Luis; Bonastre Marti, Jaime; Zoyo Garzon, Justo; Rio Cano, Carlos; Rajadell Carreras, Manuel; Codina Macià, Esteban
    Competitive project

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  • Numerical analysis of external gear pumps including cavitation

     Del Campo Sud, David; Castilla Lopez, Roberto; Raush Alviach, Gustavo Adolfo; Gamez Montero, Pedro Javier; Codina Macià, Esteban
    Journal of fluids engineering. Transactions of ASME
    Vol. 134, num. 8
    DOI: 10.1115/1.4007106
    Date of publication: 2012-08
    Journal article

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  • Prediseño suspensión altas prestaciones (activa/semi-activa): 2º informe

     Gamez Montero, Pedro Javier; Khamashta Shahin, Munir; Codina Macià, Esteban
    Date: 2012-02-27
    Report

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  • Prestaciones básicas de la suspensión GUTMAR: 1er informe

     Gamez Montero, Pedro Javier; Codina Macià, Esteban; Khamashta Shahin, Munir
    Date: 2012-02-10
    Report

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  • Influence of the interteeth clearances on the flow ripple in a gerotor pump for engine lubrication

     Gamez Montero, Pedro Javier; Castilla Lopez, Roberto; Del Campo Sud, David; Ertürk, Nihal; Raush Alviach, Gustavo Adolfo; Codina Macià, Esteban
    Proceedings of the Institution of Mechanical Engineers. Part D, Journal of automobile engineering
    Vol. 226, num. 7, p. 930-942
    DOI: 10.1177/0954407011431545
    Date of publication: 2012-01-10
    Journal article

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  • Teeth clearance and relief grooves effects in a trochoidal-gear pump using new modules of GeroLAB

     Gamez Montero, Pedro Javier; García Vílchez, Mercedes; Raush Alviach, Gustavo Adolfo; Freire Venegas, Francisco Javier; Codina Macià, Esteban
    Journal of mechanical design
    Vol. 134, num. 5
    DOI: 10.1115/1.400644
    Date of publication: 2012
    Journal article

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  • Actes dels seminaris de recerca 1r, 2n i 3r, del Departament de Mecànica de Fluids - UPC

     De Las Heras Jimenez, Salvador Augusto; Carbo Bech, Alberto Antonio; Moreno Llagostera, Hipolit; Valle, L. J.; Poeata, I.; López, J.; Torres Camara, Ricardo; Barraco Serra, Marc; Fernandez Aguado, Enrique; Escaler Puigoriol, Francesc Xavier; Hutter, J.K.; Egusquiza Estevez, Eduardo; Farhat, Mohamed; Avellan, François; Esque de los Ojos, Daniel; Dalmau Andreu, Roger; Principe Rubio, Ricardo Javier; Roe Vellve, Nuria; Codina Rovira, Ramon; Badia Rodriguez, Santiago I.; García Vílchez, Mercedes; Gamez Montero, Pedro Javier; Codina Macià, Esteban; Watton, John
    Date of publication: 2011-11-01
    Book

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  • Suspensiones hidro-neumáticas para vehículos pesados: diseño de una suspensión activa

     Gamez Montero, Pedro Javier; Khamashta Shahin, Munir; Codina Macià, Esteban
    Date: 2011-09-14
    Report

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  • Two axes sun tracking system (parte nº6): estudio circuito hidráulico con válvula reductora

     Khamashta Shahin, Munir; Codina Macià, Esteban; Freire Venegas, Francisco Javier; Gamez Montero, Pedro Javier
    Date: 2011-07-02
    Report

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  • Two axes sun tracking system (parte nº5): estudio estrangulador compensados diámetros 0,4 y 0,5 mm con diferentes secuencias

     Khamashta Shahin, Munir; Codina Macià, Esteban; Freire Venegas, Francisco Javier; Gamez Montero, Pedro Javier
    Date: 2011-06-12
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  • Two axes sun tracking system (parte nº4): estudio de descompresión rápida a través de válvula chicle compensado con diferentes secuencias

     Khamashta Shahin, Munir; Codina Macià, Esteban; Freire Venegas, Francisco Javier; Gamez Montero, Pedro Javier
    Date: 2011-05-30
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  • Experimental test two axes sun tracking system: parte nº3

     Khamashta Shahin, Munir; Codina Macià, Esteban; Freire Venegas, Francisco Javier; Gamez Montero, Pedro Javier
    Date: 2011-05-15
    Report

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  • Experimental test two axes sun tracking system: parte nº2

     Khamashta Shahin, Munir; Codina Macià, Esteban; Freire Venegas, Francisco Javier; Gamez Montero, Pedro Javier
    Date: 2011-04-30
    Report

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  • Prediseño banco de ensayo para VYC Industrial (Terrassa)

     Gamez Montero, Pedro Javier; Codina Macià, Esteban
    Date: 2011-03
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  • Experimental analysis of the flow dynamics in the suction chamber of an external gear pump

     Ertürk, Nihal; Vernet Peña, Anton; Castilla Lopez, Roberto; Gamez Montero, Pedro Javier; Ferre, Josep Anton
    International journal of mechanical sciences
    Vol. 53, num. 2, p. 135-144
    DOI: 10.1016/j.ijmecsci.2010.12.003
    Date of publication: 2011-02
    Journal article

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    Time-Resolved Particle Image Velocimetry (TRPIV) has been used to investigate the flow inside the suction chamber of an external gear pump where the movement of the fluid through the pump is maintained by the rotation of the gears. The main purpose of this paper is to study the characteristics of the complex flow pattern of this pump system in order to help in improving its total performance. The applied experimental techniques establish a method that allows visualising the flow inside the gear pump with a high rotational velocity system. Small micro air bubbles have been used as flow seeding. The images have been processed using domestic PIV software that uses specific aspects of the TRPIV technique. Instantaneous and phase-locked ensemble average fluid motions have been obtained for different gear pump rotational velocities to investigate the turbulence effect of rotating gears to the system.

  • J-01707

     Codina Macià, Esteban; Freire Venegas, Francisco Javier; Garcia Vilchez, Mercedes; García Vílchez, Mercedes; Gamez Montero, Pedro Javier
    Competitive project

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  • Numerical simulation of turbulent flow in the suction chamber of a gearpump using deforming mesh and mesh replacement

     Castilla Lopez, Roberto; Gamez Montero, Pedro Javier; Ertürk, Nihal; Vernet Peña, Anton; Coussirat Nuñez, Miguel Gustavo; Codina Macià, Esteban
    International journal of mechanical sciences
    num. 52, p. 1334-1342
    DOI: 10.1016/j.ijmecsci.2010.06.009
    Date of publication: 2010-10
    Journal article

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    The flow in the suction chamber of an external gearpump is numerically analysed. The evolution of the boundaries of the domain is very complex, and an arbitrary Lagrangian–Eulerian (ALE) formulation is used with mesh deformation and local remeshing. Nevertheless, a mesh replacement strategy is also adopted in order to avoid skewed meshes and allow for simulation of solid contact between gears. This process approximates a more realistic flow behaviour when the working pressure is larger than 10 bar, which is an important in fluid power systems where the pressure is usually greater than 100 bar. Aside from the laminar model, which fails as a result of the vortex configuration in the suction chamber, Standard k–e, RNG k–e, Realizable k–e and Reynolds Stress Models (RSM) are tested. The numerical flow is compared with experimental data obtained with Time Resolved Particle Image Velocimetry. Although all of the models failed in some respect, the RSM and RNG k–e were the best choice provided its behaviour close to the gearing zone and general shape of the vortex distribution.

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

     Castilla Lopez, Roberto; Gutes Serra, Mario; Gamez Montero, Pedro Javier; Codina Macià, Esteban
    Journal of engineering for gas turbines and power. Transactions of the ASME
    Vol. 132, num. 1, p. 012504-1-012504-10
    DOI: 10.1115/1.3126771
    Date of publication: 2010-01
    Journal article

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    This paper describes a numerical analysis of the dynamics of the shaft in the journal bearing of a gear pump.

  • Experimental analysis of the three-phase induction motor with spiral sheet rotor

     Mujal Rosas, Ramon Maria; Boix Aragonès, Oriol; Gamez Montero, Pedro Javier; Castilla Lopez, Roberto; Lloberas Valls, Joaquim
    Electrical engineering
    Vol. 91, num. 4-5, p. 251-261
    DOI: 10.1007/s00202-009-0141-y
    Date of publication: 2009-12
    Journal article

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  • Heating of saturated porous media in practice: several causes of local thermal non-equilibrium

     Virto Albert, Saturnino Luis; Carbonell Ventura, Montserrat; Castilla Lopez, Roberto; Gamez Montero, Pedro Javier
    International journal of heat and mass transfer
    Vol. 52, num. 23-24, p. 5412-5422
    DOI: doi:10.1016/j.ijheatmasstransfer.2009.07.003
    Date of publication: 2009-11
    Journal article

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    In recent years the industrial applications of porous materials has shown a growing relevance. Most of the technological thermal processes in porous media involve time-dependent thermal conditions. Therefore, the temperature at each point of the material also changes in time. In order to correctly carry out the technological process, it becomes necessary to know the temperature distribution inside the material. This is a problem of heat conduction in a fluid saturated porous media subject to a lack of local thermal equilibrium (LTNE). The purpose of this paper is to elucidate the several causes of LTNE, even in steady or quasi steady heat transfer processes in saturated porous media, and to evaluate the influence of structural characteristic of porous media and the presence of surfactant in the saturating liquid phase.

  • GEROLAB Package System: Innovative Tool to Design a Trochoidal-Gear Pump

     Gamez Montero, Pedro Javier; Castilla Lopez, Roberto; Mujal Rosas, Ramon Maria; Khamashta Shahin, Munir; Codina Macià, Esteban
    Journal of mechanical design
    Vol. 131, num. 074502, p. 1
    Date of publication: 2009-07
    Journal article

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  • Experimental Study of the shaft motion in the journal bearing of a gear pump

     Castilla Lopez, Roberto; Gutes, M; Gamez Montero, Pedro Javier; Codina Macià, Esteban
    Journal of engineering for gas turbines and power. Transactions of the ASME
    Vol. 131, p. 9
    DOI: 10.1115/1.3078202
    Date of publication: 2009-05-26
    Journal article

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  • Labson exploitation plan Nº 4

     Gamez Montero, Pedro Javier; Khamashta Shahin, Munir; Codina Macià, Esteban
    Date: 2009-04
    Report

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  • Rainflow counting method for fatigue analysis: Methodology for PROHIPP partners.

     Gamez Montero, Pedro Javier; Codina Macià, Esteban; Khamashta Shahin, Munir
    Date: 2009-03
    Report

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  • Misalignment effects on the load capacity of a hydraulic cylinder.

     Gamez Montero, Pedro Javier; Salazar, Edgar; Castilla Lopez, Roberto; Freire Venegas, Francisco Javier; Khamashta Shahin, Munir; Codina Macià, Esteban
    International journal of mechanical sciences
    Vol. 51, num. 2, p. 105-113
    DOI: 10.1016/j.ijmecsci.2009.01.001
    Date of publication: 2009-02
    Journal article

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  • Friction effects on the load capacity of a column and a hydraulic cylinder

     Gamez Montero, Pedro Javier; Salazar, Edgar; Castilla Lopez, Roberto; Freire Venegas, Francisco Javier; Khamashta Shahin, Munir; Codina Macià, Esteban
    International journal of mechanical sciences
    Vol. 51, num. 2, p. 145-151
    DOI: 10.1016/j.ijmecsci.2008.12.007
    Date of publication: 2009-02
    Journal article

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  • Analysis of the turbulence in the suction chamber of an external gear pump using Time Resolved Particle Image Velocimetry

     Castilla Lopez, Roberto; Wojciechowski, J; Gamez Montero, Pedro Javier; Vernet, A; Codina Macià, Esteban
    Flow measurement and instrumentation
    Vol. 19, num. 6, p. 377-384
    DOI: 10.1016/j.flowmeasinst.2008.06.005
    Date of publication: 2008-12
    Journal article

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  • Software for the Advanced Model Matrix Equations Resolution. Several Boundary Conditions

     Gamez Montero, Pedro Javier; Khamashta Shahin, Munir; Codina Macià, Esteban
    Date: 2008-11
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  • Varilla flexible para balanza aerodinámica de plataforma

     Gamez Montero, Pedro Javier; Castilla Lopez, Roberto
    Date of request: 2008-10-30
    Invention patent

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  • Software program for Crookedness Angle Determination. CD Software

     Gamez Montero, Pedro Javier; Khamashta Shahin, Munir; Codina Macià, Esteban
    Date: 2008-10
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  • Backhoe-Kinematics, Dynamics and stress Analysis

     Freire Venegas, Francisco Javier; Gamez Montero, Pedro Javier; Torres Lopez, Antonio Luis
    Date: 2008-10
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  • Periodic Activity Report (full project period)-WP2-

     Rio Cano, Carlos; Gamez Montero, Pedro Javier; Torres Lopez, Antonio Luis
    Date: 2008-09
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  • Hydraulic Cylinder Buckling Experimental Tests Applied on a Test Cylinder Under Frictional and Frictionless Mountings Conditions

     Gamez Montero, Pedro Javier; Khamashta Shahin, Munir; Codina Macià, Esteban
    Date: 2008-09
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  • ISO Norm 13725-Corrections Proposal

     Gamez Montero, Pedro Javier; Khamashta Shahin, Munir; Codina Macià, Esteban
    Date: 2008-09
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  • ISO 13725 Software: Guidelines and Instructions for users.

     Gamez Montero, Pedro Javier; Khamashta Shahin, Munir; Codina Macià, Esteban
    Date: 2008-09
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  • Visual Basic Program for the Advanced UPC theoretical model Calculations. Guidelines and instructions for users.

     Gamez Montero, Pedro Javier; Khamashta Shahin, Munir; Codina Macià, Esteban
    Date: 2008-09
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  • Backhoe Kinematics Analysis.

     Gamez Montero, Pedro Javier; Khamashta Shahin, Munir; Codina Macià, Esteban
    Date: 2008-09
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  • Actuator Load Capacity-Experimental Study with tubular piston rods

     Rio Cano, Carlos; Gamez Montero, Pedro Javier; Torres Lopez, Antonio Luis
    Date: 2008-07
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  • Piston Rod Stresses Measurements by Means of Strain Gauges

     Gamez Montero, Pedro Javier; Freire Venegas, Francisco Javier; Codina Macià, Esteban
    Date: 2008-06
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  • Periodic Activity Report (4th Period)-WP6

     Freire Venegas, Francisco Javier; Gamez Montero, Pedro Javier; Torres Lopez, Antonio Luis
    Date: 2008-06
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  • Field and Lab Buckling Test Results (Final Report)

     Gamez Montero, Pedro Javier; Khamashta Shahin, Munir; Codina Macià, Esteban
    Date: 2008-05
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  • Multimedia CD-Short Videos about Experimental Buckling

     Gamez Montero, Pedro Javier; Khamashta Shahin, Munir; Gutierrez Pascual, Javier
    Date: 2008-05
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  • Hydraulic Cylinder Buckling Tests. Mathematical Model Validation

     Gamez Montero, Pedro Javier; Khamashta Shahin, Munir; Codina Macià, Esteban
    Date: 2008-04
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  • Flow simulation for cushioning of a cylinder

     Castilla Lopez, Roberto; Gamez Montero, Pedro Javier; Rio Cano, Carlos
    Date: 2008-04
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  • EN Standards for Safety of Machinery

     Gamez Montero, Pedro Javier; Torres Lopez, Antonio Luis; Khamashta Shahin, Munir
    Date: 2008-03
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