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Listar por autor "Novella Rosa, Ricardo"

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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 computational analysis of the impact of bore-to-stroke ratio on emissions and efficiency of a HSDI engine

Benajes, Jesús; Novella Rosa, Ricardo; Pastor Enguídanos, José Manuel; Hernández-López, A.; Duverger, T. (Elsevier, 2017-11-01)

[EN] Research on combustion systems for Internal Combustion Engines (ICE) is guided by the necessity of improving engine efficiency while achieving the pollutant regulations. In this framework, this study identifies and ...
A methodology to develop multi-physics dynamic fuel cell system models validated with vehicle realistic drive cycle data

López-Juárez, Marcos; Rockstroh, T.; Novella Rosa, Ricardo; Vijayagopal, R. (Elsevier, 2024-03-15)

[EN] Fuel cell (FC) technology has been identified as a technically attractive solution to decarbonize the transportation sector, especially for heavy-duty vehicles. In this context, the industry and the scientific community ...
A modeling framework for predicting the effect of the operating conditions and component sizing on fuel cell degradation and performance for automotive applications

Desantes J.M.; Novella Rosa, Ricardo; Pla Moreno, Benjamín; López-Juárez, Marcos (Elsevier, 2022-07-01)

[EN] In this study, durability and performance prediction were integrated in the sizing process of the FC stack of a fuel cell range-extender (FCREx) vehicle together with the design of a dynamics-limited control strategy. ...
A New Methodology to Evaluate Engine Ignition Systems in High Density Conditions

Payri Marín, Raúl; Novella Rosa, Ricardo; García Martínez, Antonio; Domenech Llopis, Vicente (Society for Experimental Mechanics (SEM), 2014-06)

In this research, a new methodology to evaluate the operation of spark ignition systems in high density conditions is presented. New requirements in engines and new combustion modes demand more from these systems. One of ...
A numerical investigation of the performance of oxymethylene ethers blended with fossil diesel to reduce soot emissions in compression ignition engines

García-Oliver, José M; Novella Rosa, Ricardo; Micó, Carlos; Khalid, Usama Bin (Elsevier, 2022-06-14)

[EN] The reduction of the carbon footprint of internal combustion engines and the pollutant emissions is mandatory for the survival of this technology. In this sense, e-fuels are considered as a potential pathway to achieve ...
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 particle swarm optimization algorithm with novelty search for combustion systems with ultra-low emissions and minimum fuel consumption

Martínez-Rodríguez, David; Novella Rosa, Ricardo; Bracho Leon, Gabriela; Gómez-Soriano, Josep; Fernandes, Cássio; Lucchini, Tommaso; Della Torre, Augusto; Villanueva Micó, Rafael Jacinto; Hidalgo, J. Ignacio (Elsevier, 2023-08)

[EN] The particle swarm optimization algorithm is primarily inspired by the natural behaviour of swarms and achieves important results in different applications. However, it is not exempt from stagnation in local optima ...
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) ...
Acoustic characterization of combustion chambers in reciprocating engines: An application for low knocking cycles recognition

Novella Rosa, Ricardo; Pla Moreno, Benjamín; Bares-Moreno, Pau; Jimenez, Irina Ayelen (SAGE Publications, 2022-01)

[EN] In this paper the acoustic response of a combustion chamber is studied by assuming different pressure field excitation. The viscous effects on the combustion chamber and the finite impedance of the walls have been ...
Adapting an internal combustion engine to oxy-fuel combustion with in-situ oxygen production

Arnau Martínez, Francisco José; Novella Rosa, Ricardo; García-Cuevas González, Luis Miguel; Gutierrez-Castro, Fabio Alberto (American Society of Mechanical Engineers (ASME), 2021-10-15)

[EN] In transport applications, reciprocating internal combustion engines still have important advantages in terms of endurance and refueling time and available infrastructure when compared against fuel cell or battery-based ...
Adaptive ECMS based on speed forecasting for the control of a heavy-duty fuel cell vehicle for real-world driving

Piras, M.; De Bellis, V.; Malfi, E.; Novella Rosa, Ricardo; López-Juárez, Marcos (Elsevier, 2023-08-01)

[EN] Aiming at reducing pollutant emissions, hydrogen and fuel cell hybrid electric vehicles (FCVs) represent a promising technological solution. In this scenario, this paper proposes an adaptive energy management strategy ...
Advanced CFD modeling of a diesel-like spray in reacting condition

Rovira Sacie, Marc (Universitat Politècnica de València, 2015-11-09)

The aim of the present project is to study the turbulent combustion pro-cess in a diesel-like spray by means of CFD modeling. In order to do so a pre-existing unsteady flamelet / progress variable (UFPV) model based on the ...
Advantages of hydrogen addition in a passive pre-chamber ignited SI engine for passenger car applications

Benajes, Jesús; Novella Rosa, Ricardo; Gómez-Soriano, Josep; Barbery-Avila, Ibrahim Ignacio; Libert, C. (John Wiley & Sons, 2021-07)

[EN] Hydrogen is one of the most promising alternative fuels for the transportation industry. The use of hydrogen to enable lean burn in internal combustion engines is an attractive solution for reducing CO2 emissions from ...
Advantages of the unscavenged pre-chamber ignition system in turbocharged natural gas engines for automotive applications

López, J. Javier; Novella Rosa, Ricardo; Gómez-Soriano, Josep; Martínez-Hernándiz, Pablo José; Rampanarivo, F.; Libert, C.; Dabiri, M. (Elsevier, 2021-03-01)

[EN] In view of the increasing restrictions for CO2 mitigation, the evaluation of alternative fuels to ensure sustainability of transportation is becoming increasingly important. Since some of these alternatives can be ...
An adapted heat transfer model for engines with tumble motion

Olmeda González, Pablo Cesar; Martín Díaz, Jaime; Novella Rosa, Ricardo; Carreño, Ricardo (Elsevier, 2015-11-15)

In the last years, a growing interest about increasing the engine efficiency has led to the development of new engine technologies. The accurate determination of the heat transfer across the combustion chamber walls is ...
An experimental and one-dimensional modeling analysis of turbulent gas ejection in pre-chamber engines

García-Oliver, José M; Niki, Y.; Rajasegar, R.; Novella Rosa, Ricardo; Gómez-Soriano, Josep; Martínez-Hernándiz, Pablo José; Li, Z.; Musculus, M. P. B. (Elsevier, 2021-09-01)

[EN] Experimental results from a study on the evolution of gas jets ejected through the orifices of a pre-chamber in a heavy-duty optical engine are presented. The work examines conditions without fuel inside the main-chamber, ...
Analysis of combustion acoustic phenomena in compression-ignition engines using large eddy simulation

Broatch, A.; Novella Rosa, Ricardo; GARCIA TISCAR, JORGE; Gómez-Soriano, Josep; Pal, P. (American Institute of Physics, 2020-08-01)

[EN] As computational capabilities continue to grow, exploring the limits of computational fluid dynamics to capture complex and elusive phenomena, which are otherwise difficult to study by experimental techniques, is one ...
Analysis of combustion concepts in a newly designed two-stroke high-speed direct injection compression ignition engine

Benajes Calvo, Jesus Vicente; Novella Rosa, Ricardo; De Lima Moradell, Daniela Andreina; Tribotté, Pascal (SAGE Publications, 2015-01)

[EN] Two research paths are being followed to develop compression ignition engines, the extreme optimization of the conventional diesel combustion concept and the development of alternative combustion concepts. The ...
Analysis of combustion concepts in a poppet valve two-stroke downsized compression ignition engine designed for passenger car applications

De Lima Moradell, Daniela Andreina (Universitat Politècnica de València, 2016-09-01)

[EN] The research work presented on this thesis has been performed in the framework of the development and optimization of the combustion system of a novel two-stroke CI engine, with a scavenging configuration through ...