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Listar por palabra clave "INGENIERIA AEROESPACIAL"

Mostrando ítems 1-20 de 1208

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A bias correction method for fast fuel-to-air ratio estimation in diesel engines

Guardiola, Carlos; Plá Moreno, Benjamín; Blanco-Rodriguez, David; Mazer, Alexandre; Hayat, Olivier (SAGE Publications (UK and US), 2013-08)

l probes in turbocharged diesel engines are usually located downstream of the turbine, exhibiting a good dynamic response but a significant delay because of the exhaust line transport and the hardware itself. With the ...
A CFD STUDY OF CAVITATION IN REAL SIZE DIESEL INJECTORS

Patouna, Stavroula (Universitat Politècnica de València, 2012-02-17)

In Diesel engines, the internal flow characteristics in the fuel injection nozzles, such as the turbulence level and distribution, the cavitation pattern and the velocity profile affect significantly the air-fuel mixture ...
A Code for Simulating Heat Transfer in Turbulent Channel Flow

Lluesma-Rodríguez, Federico; Alcántara-Ávila, Francisco; Pérez Quiles, María Jezabel; Hoyas, S (MDPI AG, 2021-04-01)

[EN] One numerical method was designed to solve the time-dependent, three-dimensional, incompressible Navier-Stokes equations in turbulent thermal channel flows. Its originality lies in the use of several well-known methods ...
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 combustion phasing control-oriented model applied to an RCCI engine

Guardiola, Carlos; Pla Moreno, Benjamín; Bares-Moreno, Pau; Barbier, Alvin Richard Sebastien (Elsevier, 2018-09-22)

[EN] Low temperature combustions such as Reactivity Controlled Compression Ignition (RCCI) have been shown to be a promising way to reduce pollutants at the exhaust, i.e. NOx and soot emissions, and increase the thermal ...
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 computational fluid dynamics analysis of vorticity redution for turbocharged internal combustion engines

Wilczynski, Daniel (Universitat Politècnica de València, 2017-09-26)

El trabajo consiste en la utilización de la mecánica de fluidos computacional (CFD) para el análisis, diseño y optimización de sistemas de atenuación de la vorticidad (swirl) para su instalación en instalaciones de ensayo ...
A computational investigation on the influence of the use of elliptical orifices on the inner nozzle flow and cavitation development in diesel injector nozzles

Molina, Santiago; Salvador Rubio, Francisco Javier; Carreres Talens, Marcos; Jaramillo, D. (Elsevier, 2014-03)

In this paper a computational study was carried out in order to investigate the influence of the use of elliptical orifices on the inner nozzle flow and cavitation development. With this aim, a large number of injection ...
A computational methodology to account for the liquid film thickness evolution in Direct Numerical Simulation of prefilming airblast atomization

Payri, Raul; Salvador, Francisco Javier; Carreres, Marcos; Moreno-Montagud, C. (Elsevier, 2023-04)

[EN] Prefilming airblast atomization is becoming widely used in current aero engines. Fundamental studies on the actual annular configuration of airblast atomizers are difficult to realize. For this reason, researchers ...
A computationally efficient Kalman filter based estimator for updating look-up tables applied to NOx estimation in diesel engines

Guardiola, Carlos; Plá Moreno, Benjamín; Blanco-Rodriguez, David; Eriksson, L. (International Federation of Automatic Control (IFAC), 2013-11)

No-x estimation in diesel engines is an up-to-date problem but still some issues need to be solved. Raw sensor signals are not fast enough for real-time use while control-oriented models suffer from drift and aging. A ...
A conceptual energy desing for O'Hare International Airport using wing and building integrated photovoltaic system

Gomez Soriano, Maria del Pilar (Universitat Politècnica de València, 2014-09-22)

Consulta en la Biblioteca ETSI Industriales (Riunet)
A decision framework to repair or eliminate failures in engineering systems according to their Net present value

Burgos Moreno, Luna (Universitat Politècnica de València, 2020-05-05)

[ES] Esta tesis considera el impacto de los fallos en términos del efecto que estos tienen en el valor del sistema. Se desarrolla un modelo analítico que cuantifica el valor neto actual del sistema bajo unas condiciones ...
A Design Study of a Mid-Size Hybrid-Electric Aircraft

Estrela Colomina, María Eugenia (Universitat Politècnica de València, 2020-09-25)

[ES] El trabajo se centrará en el diseño conceptual y la evaluación de actuaciones de configuraciones de aeronaves híbridas-eléctricas. Análisis convencionales de restricciones y misión se integrarán con un modelo de planta ...
A fluid dynamic model for unsteady compressible flow in wall-flow diesel particulate filters

Torregrosa Huguet, Antonio José; Serrano Cruz, José Ramón; Arnau Martínez, Francisco José; Piqueras Cabrera, Pedro (Elsevier, 2011-01)

The use of particulate filters (DPF) in Diesel engines has become in recent years the standard technology for the control of soot aerosol emissions. Once emissions reduction through the management of filtration and ...
A fuzzy logic map-based knock control for spark ignition engines

Pla Moreno, Benjamín; Bares-Moreno, Pau; Jimenez, Irina Ayelen; Guardiola, Carlos; Zhang, Y.; Shen, Tielong (Elsevier, 2020-12-15)

[EN] Knock control represents one of the most critical aspects to reach optimal thermal efficiency in spark ignition engines, and its research is crucially important because it determines thermal efficiency, engine durability, ...
A generalized methodology for lithium-ion cells characterization and lumped electro-thermal modelling

Broatch, A.; Olmeda, P.; Margot , Xandra; Agizza, Luca (Elsevier, 2022-11-25)

[EN] This paper deals with the experimental characterization and electro-thermal modeling of lithium-ion batteries. This aspect is of considerable importance to be able to have an understanding of the phenomena of heat ...
A holistic framework for training business data analysts in the digital era

Abouali Sánchez, Said (Universitat Politècnica de València, 2020-04-27)

[ES] Las empresas y las organizaciones están avanzando hacia una transformación digital. En este contexto, su necesidad de Analistas de Datos de Negocios, los empleados que entienden y manejan la creciente cantidad de ...
A large-eddy simulation of diesel-like gas jets

Hoyas, S; Gil, A.; Mompó Laborda, Juan Manuel; Khuong ., Anh Dung (Inderscience, 2011)

[EN] Some aspects of the transient evolution of diesel-like gas jets by means of large-eddy simulation (LES) are discussed in this work. In order to understand the relationship between the inlet boundary condition and the ...
A learning algorithm concept for updating look-up tables for automotive applications

Guardiola García, Carlos; Plá Moreno, Benjamín; Blanco Rodríguez, David; Cabrera López, Pedro (Elsevier, 2013-04)

Look-up tables are commonly used in the automotive field for handling operating point variations. However, constant maps cannot cope with systems variations and ageing. Methods, such as Kalman filter or Extended Kalman ...
A Methodology for Measuring Turbocharger Adiabatic Maps in a Gas-Stand and Its Usage for Calibrating Control Oriented and One-Dimensional Models at Early ICE Design Stages

Serrano, J.R.; Arnau Martínez, Francisco José; García-Cuevas González, Luis Miguel; Gómez-Vilanova, Alejandro; Guilain, Stephane; Batard, Samuel (ASME International, 2021-04-01)

[EN] In this work, a methodology is proposed to standardize turbochargers testing based on measuring the maps twice: in close to adiabatic and in diathermal conditions. Along the paper, it is discussed with special detail ...