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Listar por palabra clave "Diesel injector"

Mostrando ítems 1-13 de 13

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 moving mesh generation strategy for solving an injector internal flow problem

Margot, Xandra; Hoyas, S.; Fajardo, Pablo; Patouna, Stavroula (Elsevier, 2010)

[EN] The ability to handle complex geometries is an important part of transient calculations; therefore, the need for fully automatic mesh generation capable of dealing with such geometries is quite demanded. In this paper ...
Acoplamiento de las características del flujo interno turbulento de una tobera a cálculos de la atomización primaria en chorro diesel mediante DNS

Crialesi Esposito, Marco (Universitat Politècnica de València, 2017-08-29)

The understanding of the combustion process in energy generation, both for stationary purpose or for propulsion, is becoming more and more demanding as the technology progress toward a cleaner combustion able to reduce the ...
CFD simulations of the diesel jet primary atomization from a multihole injector

Chasos, Charalambos (Editorial Universitat Politècnica de València, 2017-07-28)

[EN] High pressure multi-hole diesel injectors are currently used in direct-injection common-rail diesel engines for the improvement of fuel injection and air/fuel mixing, and the overall engine performance. The resulting ...
Characterization of the pressure losses in a common rail diesel injector

López, J. Javier; Salvador Rubio, Francisco Javier; De La Garza De Leon, Oscar; Arregle, Jean Joseph Pierre (SAGE Publications (UK and US), 2012)

A methodology to characterise the pressure losses in quasi-steady conditions (i.e. at full needle lift) of common rail diesel injectors was developed. The aim was to quantify the error when experimental results of nozzle ...
Computational study of the cavitation phenomenon and its interaction with the turbulence developed in diesel injector nozzles by Large Eddy Simulation (LES)

Salvador Rubio, Francisco Javier; Martínez López, Jorge; Romero Bauset, José Vicente; Roselló Ferragud, María Dolores (Elsevier, 2013-04)

Firstly, the code has been validated at real operating diesel engine conditions with experimental data in terms of mass flow, momentum flux and effective velocity, showing that the model is able to predict with a high level ...
Influence of biofuels on the internal flow in diesel injector nozzles

Salvador, F.J.; Martínez López, Jorge; Romero Bauset, José Vicente; Roselló, M.D. (Elsevier, 2011)

[EN] In this paper, the behavior of the internal nozzle flow of a standard diesel fuel has been compared against a biodiesel fuel (soybean oil) at cavitating and non-cavitating conditions, using a homogeneous equilibrium ...
Influence of Inter-Jet Spacing on the Diesel Spray Formation and Combustion

Montiel Prieto, Tomás Enrique (Universitat Politècnica de València, 2022-03-25)

[ES] La creciente aversión pública contra los motores de combustión interna ha llevado a un fuerte deseo de cambio hacia fuentes de energía renovables y más limpias. Sin embargo, todavía es difícil reemplazar los combustibles ...
Numerical simulation and extended validation of two-phase compressible flow in diesel injector nozzles

Salvador Rubio, Francisco Javier; Hoyas, S; Novella Rosa, Ricardo; Martínez López, Jorge (Professional Engineering Publishing, 2011)

In this paper, the ability of a computational fluid dynamics code to reproduce cavitation phenomena accurately is checked by comparing data acquired by numerical simulations against those obtained from different experiments ...
Quantification of diesel injector dribble using 3D reconstruction from x-ray and DBI imaging

Sechenyh, Vitaliy; Turner, Jack; Sykes, Dan; Duke, Daniel; Swantek, Andrew; Matusik, Katarzyna; Kastengren, Alan; Powell, Christopher; Viera Sotillo, Alberto Antonio; Payri, Raul; Crua, Cyril (Editorial Universitat Politècnica de València, 2017-07-28)

[EN] Post-injection dribble is known to lead to incomplete atomisation and combustion due to the release of slow moving, and often surface-bound, liquid fuel after the end of the injection event. This can have a negative ...
Quantitative analysis of dribble volumes and rates using three-dimensional reconstruction of X-ray and diffused back-illumination images of diesel sprays

Sechenyh, Vitaliy; Duke, Daniel J.; Swantek, Andrew B.; Matusik, Katarzyna E.; Kastengren, Alan L.; Powell, Christopher F.; Viera, Alberto; Payri, Raul; Crua, Cyril (SAGE Publications, 2020-01)

[EN] Post-injection fuel dribble is known to lead to incomplete atomisation and combustion due to the release of slow-moving, and often surface-bound, liquid fuel after the end of injection. This can have a negative effect ...
Study of the influence of the needle eccentricity on the internal flow in diesel injector nozzles by computational fluid dynamics calculations

Salvador Rubio, Francisco Javier; Martínez López, Jorge Eugenio; Romero Bauset, José Vicente; Roselló Ferragud, María Dolores (Taylor & Francis, 2014)

In the present paper, a computational study has been performed in order to clarify the effects of the needle eccentricity in a real multihole microsac nozzle. This nozzle has been simulated at typical operating conditions ...
Using a homogeneous equilibrium model for the study of the inner nozzle flow and cavitation pattern in convergent-divergent nozzles of diesel injectors

Salvador, Francisco Javier; Jaramillo-Císcar, David; Romero, José-Vicente; Roselló, María-Dolores (Elsevier, 2017)

[EN] In this paper, the behaviour of the internal nozzle flow and cavitation phenomenon are numerically studied for non-conventional Diesel convergent-divergent nozzles in order to assess their potential in terms of flow ...