Suscripción a Biblioteca: Guest
Portal Digitalde Biblioteca Digital eLibros Revistas Referencias y Libros de Ponencias Colecciones
Atomization and Sprays
Factor de Impacto: 1.737 Factor de Impacto de 5 años: 1.518 SJR: 0.814 SNIP: 1.18 CiteScore™: 2.2

ISSN Imprimir: 1044-5110
ISSN En Línea: 1936-2684

Volumes:
Volumen 30, 2020 Volumen 29, 2019 Volumen 28, 2018 Volumen 27, 2017 Volumen 26, 2016 Volumen 25, 2015 Volumen 24, 2014 Volumen 23, 2013 Volumen 22, 2012 Volumen 21, 2011 Volumen 20, 2010 Volumen 19, 2009 Volumen 18, 2008 Volumen 17, 2007 Volumen 16, 2006 Volumen 15, 2005 Volumen 14, 2004 Volumen 13, 2003 Volumen 12, 2002 Volumen 11, 2001 Volumen 10, 2000 Volumen 9, 1999 Volumen 8, 1998 Volumen 7, 1997 Volumen 6, 1996 Volumen 5, 1995 Volumen 4, 1994 Volumen 3, 1993 Volumen 2, 1992 Volumen 1, 1991

Atomization and Sprays

DOI: 10.1615/AtomizSpr.v21.i1.30
pages 31-40

CFD Study of Needle Motion Influence on the Spray Conditions of Single-Hole Injectors

Xandra Margot
CMT-Motores Térmicos Edificio 6D Universitat Politècnica de València Camino de Vera s/n 46022 Valencia. Spain
Sergio Hoyas
School of Aeronautics, Universidad Politecnica de Madrid 28040 Madrid, Spain; CMT - Motores Térmicos, Universidad Politécnica de Valencia, Camino de Vera S/N, 46022 Valencia, Spain
P. Fajardo
CMT - Motores Térmicos, Universidad Politécnica de Valencia, Camino de Vera S/N, 46022 Valencia, Spain
S. Patouna
CMT - Motores Térmicos, Universidad Politécnica de Valencia, Camino de Vera S/N, 46022 Valencia, Spain

SINOPSIS

The spray characteristics and consequently the success of the diesel combustion process is strongly affected by the manner in which fuel is introduced in the combustion chamber. This work consists in studying the effect of needle motion of typical single-hole sac-type injectors on nozzle exit conditions. Three-dimensional moving mesh simulations have been carried out to calculate the injection process using cylindrical and conical nozzle geometries. The CFD analysis includes a study of the effect of cavitation on kinetic turbulent energy and velocity profiles. Results show that the flow within the nozzle and at the exit varies depending on the nozzle geometry and needle position. The model predicts clouds of cavitation that grow and exit the nozzle at low needle lifts. A kind of hysteresis in the development of the flow has also been observed between needle opening and closing. The existing correlation between turbulence and cavitation at the nozzle hole exit during the needle motion has been quantified.


Articles with similar content:

A COMPARATIVE RANS/LES STUDY OF TRANSIENT GAS JETS AND SPRAYS UNDER DIESEL CONDITIONS
Atomization and Sprays, Vol.17, 2007, issue 5
Xi Jiang, Hua Zhao, Mariafrancesca Valentino
EXPERIMENTAL AND NUMERICAL STUDY OF THE ATOMIZATION OF A PLANAR LIQUID SHEET
Atomization and Sprays, Vol.6, 1996, issue 1
Antonio Garcia-Olivares, Charles J. Call, Cesar Dopazo, Antonio Lozano
3D SIMULATION OF TURBULENT AND CAVITATING FLOW FOR THE ANALYSIS OF PRIMARY BREAKUP MECHANISMS IN REALISTIC DIESEL INJECTION PROCESSES
Atomization and Sprays, Vol.29, 2019, issue 10
Henrik Rusche, Lukas Weiß, Philip Schwarz, Michael Wensing, Romuald Skoda, Martin Blume
EFFECT OF BUBBLE GENERATION CHARACTERISTICS ON EFFERVESCENT ATOMIZATION AT LOW GAS-LIQUID RATIO OPERATION
Atomization and Sprays, Vol.20, 2010, issue 3
David S. Nobes, Sina Ghaemi, Payam Rahimi
NUMERICAL SIMULATION OF THE CAVITATING FLOW IN AN ELLIPTICAL NOZZLE
Atomization and Sprays, Vol.21, 2011, issue 3
Choong-Won Lee, Kun Woo Ku, Jung Goo Hong