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Browsing by Author "García Oliver, José María"

Now showing items 1-20 of 134

A combined 1D3D CFD approach for reducing mesh dependency in Diesel spray calculations

García-Oliver, José M; Margot , Xandra; Chávez Cobo, Mariany de Jesús; Karlsson, A (PERGAMON-ELSEVIER SCIENCE LTD, 2011)

[EN] A 1D3D-CFD coupled spray model is proposed in this work for the simulation of Diesel sprays under non-evaporative conditions and constant injection velocity in time. The basic idea of the model is to reduce the poor ...
A comparison of diesel sprays CFD modeling approaches: DDM versus Sigma-Y Eulerian atomization model

Desantes Fernández, José Mª; García Oliver, José María; Pastor Enguídanos, José Manuel; Pandal-Blanco, Adrián (Begell House, 2016)

[EN] A comparison between the Σ-Y atomization model and a classical DDM approach has been carried out for diesel spray CFD simulations. The Σ-Y model, originally proposed by Vallet and Borghi (1999), is based on an Eulerian ...
A computational analysis of local flow for reacting Diesel sprays by means of an Eulerian CFD model

Pandal-Blanco, Adrián; García-Oliver, José M; Novella Rosa, Ricardo; Pastor Enguídanos, José Manuel (Elsevier, 2018)

[EN] An implementation and validation of the coupled Sigma-gamma ADF model is presented in this work for reacting Diesel spray CFD simulations under a RANS turbulence modeling approach. An Approximated Diffusion Flamelet ...
A consistent, scalable model for Eulerian spray modeling

Pandal-Blanco, Adrián; Pastor Enguídanos, José Manuel; García Oliver, José María; Baldwin, E.; Schmidt, D.P. (Elsevier, 2016-07)

Despite great practical interest in how sprays emanate from fuel injectors, the near-nozzle region has remained a challenge for spray modelers. Recently, Eulerian models have shown promise in capturing the fast gas-liquid ...
A numerical study of the effect of nozzle diameter on diesel combustion ignition and flame stabilization

Desantes Fernández, José Mª; García-Oliver, José M; Novella Rosa, Ricardo; Pachano-Prieto, Leonardo Manuel (SAGE Publications, 2020-01)

[EN] The role of nozzle diameter on diesel combustion is studied by performing computational fluid dynamics calculations of Spray A and Spray D from the Engine Combustion Network. These are well-characterized single-hole ...
A phenomenological explanation of the autoignition propagation under HCCI conditions

Desantes, J.M.; López, J. Javier; García-Oliver, José M; López-Pintor, Darío (Elsevier, 2017)

[EN] A phenomenological explanation about the autoignition propagation under HCCI conditions is developed in this paper. To do so, diffusive effects from the burned zones to the fresh mixture, pressure waves based effects ...
A spectroscopy study of gasoline partially premixed compression ignition spark assisted combustion

Pastor Soriano, José Vicente; García Oliver, José María; García Martínez, Antonio; Micó Reche, Carlos; Durret, R. (Elsevier, 2013-04)

Nowadays many research efforts are focused on the study and development of new combustion modes, mainly based on the use of locally lean air–fuel mixtures. This characteristic, combined with exhaust gas recirculation, ...
A study on diesel spray tip penetration and radial expansion under reacting conditions

Payri, Raul; García Oliver, José María; Xuan, Tiemin; Bardi, Michele (Elsevier, 2015-11-05)

The shape of Diesel spray was investigated at real engine conditions in a constant pressure combustion chamber. Schlieren imaging technique was used to make quantitative measurements of spray tip penetration and radial ...
A study on the interaction between local flow and flame structure for mixing-controlled Diesel sprays

García-Oliver, José M; Malbec, Louis-Marie; Toda, Hubert Baya; Bruneaux, Gilles (Elsevier, 2017-05)

[EN] A detailed study on the spray local flow and flame structure has been performed by means of PIV and laser-sheet LIF techniques under Diesel spray conditions. Operating conditions were based on Engine Combustion Network ...
A study on tip penetration velocity and radial expansion of reacting diesel sprays with different fuels

Desantes J.M.; García-Oliver, José M.; Xuan, Tiemin; Vera-Tudela-Fajardo, Walter Martin (Elsevier, 2017)

[EN] The reacting diesel spray structure was investigated using n-dodecane, n-heptane and one binary blend of Primary Reference Fuels (80% n-heptane and 20% iso-octane in mass) based on the existing database from previous ...
A two-equation soot-in-flamelet modeling approach applied under Spray A conditions

Pachano, Leonardo; Xu, Chao; García-Oliver, José M; Pastor Enguídanos, José Manuel; Novella Rosa, Ricardo; Kundu, Prithwish (Elsevier, 2021-09)

[EN] Soot production (including formation and oxidation) is studied in the transient, high-pressure and turbulent n -dodecane Spray A flames from the Engine Combustion Network (ECN) using computational fluid dynamics (CFD) ...
An experimental analysis on the evolution of the transient tip penetration in reacting Diesel sprays

Desantes Fernández, José Mª; Pastor, José V.; García Oliver, José María; Briceño Sánchez, Francisco Javier (Elsevier, 2014-08)

Schlieren imaging has helped deeply characterize the behavior of Diesel spray when injected into an oxygen-free ambient. However, when considering the transient penetration of the reacting spray after autoignition, i.e. ...
An experimental study of the effects of fuel properties on diesel spray processes using blends of single-component fuels

Vera-Tudela Fajardo, Walter Martin (Universitat Politècnica de València, 2015-12-16)

[EN] This last few years, the trend in diesel engines has been to use different kinds of fuels to identify their influence and behaviour on the emissions and performance. Among the wide variety of fuels employed are the ...
An experimental study of the effects of fuel properties on reactive spray evolution using Primary Reference Fuels

Pastor Soriano, José Vicente; García Oliver, José María; López, J. Javier; Vera-Tudela-Fajardo, Walter Martin (Elsevier, 2016-01-01)

An experimental study on the ignition and combustion of diesel-type sprays using n-heptane, iso-octane and four intermediate blends is presented. The choice of components was done in order to represent the transition from ...
An Experimental Study on Diesel Spray Injection into a Non-Quiescent Chamber

Pastor, José V.; García-Oliver, José M; García Martínez, Antonio; Zhong, Wenjun; Micó Reche, Carlos; Xuan, Tiemin (SAE International, 2017)

[EN] Visualization of single-hole nozzles into quiescent ambient has been used extensively in the literature to characterize spray mixing and combustion. However in-cylinder flow may have some meaningful impact on the spray ...
An experimental study with renewable fuels using ECN Spray A and D nozzles

Pastor, José V.; García-Oliver, José M; Micó, Carlos; Garcia-Carrero, Alba Andreina (SAGE Publications, 2021)

[EN] The decarbonization process of the automotive industry and the road transport sector has raised the interest on the development of cleaner fuels. A proper characterization of their properties and behavior under different ...
Analysis of the Influence of Diesel Spray Injection on the Ignition and Soot Formation in Multiple Injection Strategy

Payri, Raul; García-Oliver, José M; Mendoza, Victor; Viera, Alberto (MDPI AG, 2020-07)

[EN] Multiple injection strategies have increased their capabilities along with the evolution of injection system technologies up to the point that nowadays it is possible to inject eight different pulses, permitting to ...
Analysis of transient liquid and vapor phase penetration for diesel sprays undervariable injection conditions

Pastor Soriano, José Vicente; Payri Marín, Raúl; García Oliver, José María; Briceño Sánchez, Francisco Javier (Begell House, 2011)

The objective of this study is to investigate liquid length and vapor penetration for diesel sprays under highly transient injection conditions. High-speed Mie-scattering and shadowgraphy imaging of the spray evolution ...
Análisis computacional de la combustión de OMEx en condiciones de motores de encendido por compresión

Sanz Vila, Adrià (Universitat Politècnica de València, 2022-04-12)

[ES] El uso de combustibles líquidos de origen renovable en motores de combustión es un ámbito de gran actividad actual en el sector del transporte, especialmente en aplicaciones en las que la autonomía del vehículo juega ...
Análisis de la combustión en un quemador de turbina de gas mediante la aplicación del modelado CFD

Gómez-Arias Mateos, Lorenzo Luis (Universitat Politècnica de València, 2021-10-13)

[ES] En este TFM se lleva a cabo el análisis de la combustión en un quemador de turbina de gas mediante la aplicación del modelado de la Dinámica de Fluidos Computacional (CFD). Dada la complejidad y coste económico que ...