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Dive into the research topics where Jorge Fernández Arroyo is active.

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Featured researches published by Jorge Fernández Arroyo.


Journal of Energy Engineering-asce | 2016

Combustion Analysis of a Spark-Ignition Engine Fueled on Methane-Hydrogen Blend with Variable Equivalence Ratio Using a Computational Fluid Dynamics Code

George M. Kosmadakis; F Moreno; Jorge Fernández Arroyo; M. Muñoz; C.D. Rakopoulos

AbstractThe main scope of the present work is to examine the combustion processes inside the cylinder of a spark-ignition (SI) engine fueled with a methane-hydrogen blend with variable equivalence ratio. This combustion analysis is conducted with a computational fluid dynamics code, which is an in-house code and has been initially developed for simulating hydrogen-fueled SI engines. Lately, its combustion model has been extended with the introduction of methane fuel and various routes are used for the calculation of the nitric oxide (NO) emissions. The first task is to conduct the validation of this code, focusing on this newly developed combustion model. This validation is based on both performance and emissions comparison with experimental data, in order to gain a complete view of the code capabilities. The available experimental data are from a two-cylinder SI engine with complete sets of measured values. For the current study, it was decided to focus on the effect of the equivalence ratio (from 0.7 up...


Archive | 2016

Spark-Ignition Engine Fueled with Methane-Hydrogen Blends

George M. Kosmadakis; F. Moreno; Jorge Fernández Arroyo; M. Muñoz; C.D. Rakopoulos

The motivation of the present work is first to conduct the validation of a Computational Fluid Dynamics (CFD) code, for different methane-hydrogen fuel blends in a spark-ignition (SI) engine, focusing on the newly developed combustion model. This validation is based on both performance and emissions comparison with experimental data, in order to gain a complete view of the code capabilities. Then, a detailed combustion analysis is conducted, by further processing the results of the numerical code, providing insight of the flame front propagation and emissions production inside the engine cylinder. The available experimental data are from a two-cylinder SI engine with complete sets of measured values. For the current study it has been decided to focus on the effect of variable hydrogen content (from 0 up to 50% by vol. hydrogen). The CFD code is an in-house code and has been initially developed for simulating hydrogen-fueled SI engines. Lately, its combustion model has been extended with the introduction of methane fuel and the reaction rates are calculated with the characteristic conversion time-scale method, while the flame front is tracked using a laminar and turbulent combustion velocity. The nitric oxide (NO) emissions are calculated according to the widely-used Zeldovich mechanism. The CFD code validation includes the comparison of calculated performance values (pressure history and heat release rates) with the measured ones for variable hydrogen content. The calculated NO emissions are also compared with the measured ones for the same conditions. From this comparison it has been revealed that a good match exists for both performance and emissions, showing that the code can be applied for detailed investigation of such combustion processes. Finally, a detailed combustion analysis is implemented with the support of the measured data, in order to examine the combustion processes and flame propagation for the different fuel blends.


International Journal of Hydrogen Energy | 2012

Combustion analysis of a spark ignition engine fueled with gaseous blends containing hydrogen

F. Moreno; Jorge Fernández Arroyo; M. Muñoz; C. Monné


International Journal of Hydrogen Energy | 2012

Efficiency and emissions in a vehicle spark ignition engine fueled with hydrogen and methane blends

F. Moreno; M. Muñoz; Jorge Fernández Arroyo; O. Magén; C. Monné; I. Suelves


Fuel | 2014

Combustion behavior of a spark ignition engine fueled with synthetic gases derived from biogas

Jorge Fernández Arroyo; F. Moreno; M. Muñoz; C. Monné; Nuria Bernal


International Journal of Hydrogen Energy | 2013

Efficiency and emissions of a spark ignition engine fueled with synthetic gases obtained from catalytic decomposition of biogas

Jorge Fernández Arroyo; F. Moreno; M. Muñoz; C. Monné


Energy Conversion and Management | 2015

Experimental study of ignition timing and supercharging effects on a gasoline engine fueled with synthetic gases extracted from biogas

Jorge Fernández Arroyo; F. Moreno; M. Muñoz; C. Monné


Applied Acoustics | 2013

Diagnostic method based on the analysis of the vibration and acoustic emission energy for emergency diesel generators in nuclear plants

Jorge Fernández Arroyo; M. Muñoz; F. Moreno; Nuria Bernal; C. Monné


Fuel | 2018

Performance and emissions of a diesel engine using sunflower biodiesel with a renewable antioxidant additive from bio-oil

Cristina Dueso; M. Muñoz; F. Moreno; Jorge Fernández Arroyo; Noemí Gil-Lalaguna; Ana Bautista; Alberto Gonzalo; José Luis Sánchez


Energy Conversion and Management | 2018

CFD-based method with an improved ignition model for estimating cyclic variability in a spark-ignition engine fueled with methane

George M. Kosmadakis; D.C. Rakopoulos; Jorge Fernández Arroyo; F. Moreno; M. Muñoz; C.D. Rakopoulos

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M. Muñoz

University of Zaragoza

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F. Moreno

University of Zaragoza

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C. Monné

University of Zaragoza

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C.D. Rakopoulos

National Technical University of Athens

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George M. Kosmadakis

National Technical University of Athens

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