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Listar por autor "Martínez López, Jorge"

Mostrando ítems 1-14 de 14

A contribution to the understanding of cavitation effects in Diesel injector nozzles through a combined experimental and computational investigation

Payri González, Francisco; Payri, Raul; Salvador Rubio, Francisco Javier; Martínez López, Jorge (Elsevier, 2012-04-15)

In this paper a combined experimental and computational study was carried out in order to assess the ability of a homogeneous equilibrium model in predicting the experimental behaviour observed from the hydraulical ...
Ajuste de los parámetros de suspensión de un Mitsubishi Montero mediante la simulación del comportamiento dinámico

Martínez López, Jorge (Universitat Politècnica de València, 2013-12-19)

Consulta en la Biblioteca ETSI Industriales (7799)
Analysis of the combined effect of hydrogrinding process and inclination angle on hydraulic performance of diesel injection nozzles

Salvador Rubio, Francisco Javier; Carreres Talens, Marcos; Jaramillo Císcar, David; Martínez López, Jorge (Elsevier, 2015-11-15)

A computational study to investigate the influence of the orifices inclination and the rounding radius at the orifice inlet (consequence of the hydro-erosive grinding process applied after the orifices machining) over the ...
Assessment of compressibility effects on internal nozzle flow in diesel injectors at very high injection pressures

Salvador, F.J.; De La Morena, Joaquín; Martínez López, Jorge; Jaramillo-Císcar, David (Elsevier, 2017)

[EN] Diesel fuel injection systems are being used at higher injection pressure conditions over time because of more stringent emissions requirements. Thus, the importance to properly take into account the fluid compressibility ...
Comparative study of the internal flow in diesel injection nozzles at cavitating conditions at different needle lifts with steady and transient simulations approaches

Salvador, Francisco Javier; De La Morena, Joaquín; Crialesi Esposito, Marco; Martínez López, Jorge (SAGE Publications, 2018)

[EN] The motion of the needle during the injection process of a diesel injector has a marked influence on the internal flow, the fuel characteristics at the nozzle exit, the spray pattern and the fuel-air mixing process. ...
Comparison of microsac and VCO diesel injector nozzles in terms of internal nozzle flow characteristics

Salvador Rubio, Francisco Javier; Carreres Talens, Marcos; Jaramillo Císcar, David; Martínez López, Jorge (Elsevier, 2015-10)

A computational study focused on the inner nozzle flow and cavitation phenomena has been reported in this paper in order to investigate the two most common types of diesel injector nozzles at the present: microsac and valve ...
Computational study of the cavitation phenomenon and its interaction with the turbulence developed in diesel injector nozzles by Large Eddy Simulation (LES)

Salvador Rubio, Francisco Javier; Martínez López, Jorge; Romero Bauset, José Vicente; Roselló Ferragud, María Dolores (Elsevier, 2013-04)

Firstly, the code has been validated at real operating diesel engine conditions with experimental data in terms of mass flow, momentum flux and effective velocity, showing that the model is able to predict with a high level ...
Estudio computacional de la influencia del levantamiento de aguja sobre el flujo interno y el fenómeno de la cavitación en toberas de inyección diésel

Martínez López, Jorge (Universitat Politècnica de València, 2013-05-30)

Durante el proceso de apertura y cierre de un inyector Diesel, las características del combustible a la salida de la tobera cambian significativamente como consecuencia del movimiento de la aguja. Este hecho tiene una ...
ESTUDIO DE LA INFLUENCIA DEL FENÓMENO DE LA CAVITACIÓN SOBRE EL FLUJO INTERNO EN TOBERAS DE INYECCIÓN DIESEL

Martínez López, Jorge (Universitat Politècnica de València, 2011-07-27)

El objetivo principal de la presente tesis es el modelado computacional de la cavitación en el interior de los orificios de las toberas de inyección Diesel durante el proceso de inyección, prestando especial atención a la ...
Influence of biofuels on the internal flow in diesel injector nozzles

Salvador, F.J.; Martínez López, Jorge; Romero Bauset, José Vicente; Roselló, M.D. (Elsevier, 2011)

[EN] In this paper, the behavior of the internal nozzle flow of a standard diesel fuel has been compared against a biodiesel fuel (soybean oil) at cavitating and non-cavitating conditions, using a homogeneous equilibrium ...
Large-eddy simulation analysis of the influence of the needle lift on the cavitation in diesel injector nozzles

Desantes Fernández, José Mª; Salvador Rubio, Francisco Javier; Carreres Talens, Marcos; Martínez López, Jorge (SAGE Publications (UK and US), 2015-03)

The cavitation phenomenon has a strong influence on the internal flow and spray development in diesel injector nozzles. Despite its importance, there are many aspects which still remain unclear, especially for partial ...
Numerical simulation and extended validation of two-phase compressible flow in diesel injector nozzles

Salvador Rubio, Francisco Javier; Hoyas, S; Novella Rosa, Ricardo; Martínez López, Jorge (Professional Engineering Publishing, 2011)

In this paper, the ability of a computational fluid dynamics code to reproduce cavitation phenomena accurately is checked by comparing data acquired by numerical simulations against those obtained from different experiments ...
Study of the influence of the needle lift on the internal flow and cavitationphenomenon in diesel injector nozzles by CFD using RANS methods

Salvador, F. J.; Martínez López, Jorge; Caballer Fernández, Miguel; Alfonso Laguna, Carlos de (Elsevier, 2013-02)

It is well known that cavitation phenomenon in diesel injector nozzles has a strong influence on the internal flow during the injection process and spray development. However, its influence on the flow during needle opening ...
Using one-dimensional modeling to analyse the influence of the use of biodiesels on the dynamic behavior of solenoid-operated injectors in common rail systems: Detailed injection system model

Payri Marín, Raúl; Salvador Rubio, Francisco Javier; Marti Aldaravi, Pedro; Martínez López, Jorge (Elsevier, 2012-02)

A combined experimental and computational investigation has been performed in order to evaluate the influence of physical properties of biodiesel on the injection process in a common-direct injection system with second ...