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Listar por palabra clave "Chemical kinetics"

Mostrando ítems 1-11 de 11

A piecewise-linearized algorithm based on the Krylov subspace for solving stiff ODEs

Ibáñez González, Jacinto Javier; Hernández García, Vicente; Ruiz Martínez, Pedro Antonio; Arias, Enrique (Elsevier, 2011-02)

Numerical methods for solving Ordinary Differential Equations (ODEs) have received considerable attention in recent years. In this paper a piecewise-linearized algorithm based on Krylov subspaces for solving Initial Value ...
Analysis of the aging effects on the thermal runaway characteristics of Lithium-Ion cells through stepwise reactions

Pastor, José V.; García Martínez, Antonio; Monsalve-Serrano, Javier; Golke, Diego (Elsevier, 2023-07-25)

[EN] The current political vision to drastically reduce carbon emissions pushes the electrified powertrain into an increasingly important role in the transport sector. However, concerns related to the battery's effectiveness ...
Desarrollo de nuevos catalizadores de descomposición de ozono basados en óxidos de manganeso (IV) con aplicaciones en eliminación de contaminantes ambientales

Vidal Barreiro, Isabel (Universitat Politècnica de València, 2021-11-16)

[ES] La integridad humana y medioambiental se ha visto perjudicada por el incremento de emisiones de agentes contaminantes a raíz de la industrialización y el desarrollo de tecnologías avanzadas. Dentro de este grupo se ...
Development of a fast-virtual CFR engine model and its use on autoignition studies

García Martínez, Antonio; Monsalve-Serrano, Javier; Lago-Sari, Rafael; Fogué-Robles, Álvaro; Alemahdi, Nika; Tunér, Martin; López Pintor, Darío (Elsevier, 2021-12-15)

[EN] Homogenous charge compression ignition engines have been studied as an alternative to the conventional diesel combustion to attain high efficiency with ultra-low NOx and soot emissions for a wide variety of fuels. ...
Evaluation of the approximated diffusion flamelet concept using fuels with different chemical complexity

Payri, F.; Novella Rosa, Ricardo; Pastor Enguídanos, José Manuel; Pérez-Sánchez, Eduardo Javier (Elsevier, 2017)

[EN] The ability of flamelet models to reproduce turbulent combustion in devices such as diesel engines or gas turbines has enhanced the usage of these approaches in Computational Fluid Dynamics (CFD) simulations. The ...
Fundamental insights on ignition and combustion of natural gas in an active fueled pre-chamber spark-ignition system

Rajasegar, Rajavasanth; Niki, Yoichi; García-Oliver, José M; Li, Zheming; Musculus, Mark P.B. (Elsevier, 2021-10)

[EN] Pre-chamber spark-ignition (PCSI), either fueled or non-fueled, is a leading concept with the potential to enable diesel-like efficiency in medium-duty (MD) and heavy-duty (HD) natural gas (NG) engines. However, the ...
Modeling of the nitrogen oxides formation process applicable to several diesel combustion modes

Redón Lurbe, Pau (Universitat Politècnica de València, 2013-11-04)

Como consecuencia de las exigentes legislaciones medioambientales actualmente en vigor, como las Euro Emission Standards en Europa, los investigadores e ingenieros se ven forzados a "re-desarrollar" el proceso de combustión ...
New 0-D methodology for predicting NO formation under continuously varying temperature and mixture composition conditions

Benajes Calvo, Jesus Vicente; López Sánchez, José Javier; Molina Alcaide, Santiago Alberto; Redón Lurbe, Pau (Elsevier, 2015-02)

The development of new diesel combustion modes characterized by low combustion temperatures, to minimize the NOx emissions, has caused a noticeable change in the diesel spray s structure and in the NOx chemistry, gaining ...
Thermal runaway evaluation and thermal performance enhancement of a lithium-ion battery coupling cooling system and battery sub-models

García Martínez, Antonio; Monsalve-Serrano, Javier; Lago-Sari, Rafael; Martínez-Boggio, Santiago Daniel (Elsevier, 2022-02-05)

[EN] This paper presents a novelsimulation approach consisting of coupling fundamental and applicate aspects of Lithium-Ion battery simulations. A battery module representative of a complete battery pack is built using ...
Utilizing neural networks to supplant chemical kinetics tabulation through mass conservation and weighting of species depletion

Rohrhofer, Franz M.; Posch, Stefan; Goessnitzer, Clemens; García-Oliver, José M; Geiger, Bernard C. (Elsevier BV, 2024-05)

[EN] Artificial Neural Networks (ANNs) have emerged as a powerful tool in combustion simulations to replace memory -intensive tabulation of integrated chemical kinetics. Complex reaction mechanisms, however, present a ...
Verification of diesel spray ignition phenomenon in dual-fuel diesel-piloted premixed natural gas engine

Niki, Yoichi; Rajasegar, Rajavasanth; Li, Zheming; Musculus, Mark P.B.; García-Oliver, José M; Takasaki, Koji (SAGE Publications, 2022-02)

[EN] Dual-fuel (DF) engines, in which premixed natural gas and air in an open-type combustion chamber is ignited by diesel-fuel pilot sprays, have been more popular for marine use than pre-chamber spark ignition (PCSI) ...