Доступ предоставлен для: Guest
Портал Begell Электронная Бибилиотека e-Книги Журналы Справочники и Сборники статей Коллекции
Atomization and Sprays
Импакт фактор: 1.262 5-летний Импакт фактор: 1.518 SJR: 0.814 SNIP: 1.18 CiteScore™: 1.6

ISSN Печать: 1044-5110
ISSN Онлайн: 1936-2684

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

Atomization and Sprays

DOI: 10.1615/AtomizSpr.2013006361
pages 97-118

NUMERICAL ANALYSIS OF THE INFLUENCE OF DIESEL NOZZLE DESIGN ON INTERNAL FLOW CHARACTERISTICS FOR 2-VALVE DIESEL ENGINE APPLICATION

Joaquin De la Morena
Engine Research Center, University of Wisconsin-Madison, Madison, WI 53076, USA
Kshitij Neroorkar
Department of Mechanical & Industrial Engineering, University of Massachusetts, Amherst, MA 01003, USA
Alejandro H. Plazas
General Motors Global Research and Development, Warren, MI 48090-9055, USA
Richard C. Peterson
General Motors Global Research and Development, Warren, MI 48090-9055, USA
David P. Schmidt
Department of Mechanical and Industrial Engineering, University of Massachusetts Amherst, Amherst, Massachusetts 01003, USA

Краткое описание

The current paper studies the potential effect of using tilted injectors on internal nozzle flow characteristics. This kind of injector has been commonly chosen for 2-valve diesel engines. In order to achieve similar spray targeting in a 4-valve configuration, the injector design needs to be modified, inducing a different angle on each of the nozzle holes with respect to the injector axis. To study the implications of this kind of nozzle design, a vertical and a tilted injector have been analyzed for two kinds of hole shape: tapered, which suppresses cavitation; and cylindrical, which is more prone to cavitating flow. A two-component surrogate model has been used to emulate the physical properties of a typical commercial diesel fuel. Full three-dimensional flow simulations have been performed, using a flash boiling model to capture the phase transition induced by cavitation. The simulations have been conducted at the full needle lift condition. The results show that there is a significant influence of hole angle on the mass flow distribution through the nozzle, as well as on the flow pattern and the outlet velocity profile, leading to an asymmetric spray distribution inside the combustion chamber. It is also demonstrated that cavitation formation is affected by the hole angle.

Ключевые слова: diesel, fuel injector, modeling, cavitation

Articles with similar content:

INFLUENCE OF VORTEX FLOW AND CAVITATION ON NEAR-NOZZLE DIESEL SPRAY DISPERSION ANGLE
Atomization and Sprays, Vol.19, 2009, issue 3
Manolis Gavaises, A. Andriotis
INVESTIGATION OF RAPID ATOMIZATION AND COLLAPSE OF SUPERHEATED LIQUID FUEL SPRAY UNDER SUPERHEATED CONDITIONS
Atomization and Sprays, Vol.26, 2016, issue 12
Hujie Pan, David L. S. Hung, Tianyun Li, Min Xu, Shengqi Wu
EFFECT OF NOZZLE CONFIGURATION ON MACROSCOPIC SPRAY CHARACTERISTICS OF MULTI-HOLE FUEL INJECTORS UNDER SUPERHEATED CONDITIONS
Atomization and Sprays, Vol.26, 2016, issue 5
Gele Aori, Ming Zhang, David L. S. Hung, Tianyun Li, Gaomimg Zhang
SPRAY VISUALIZATION AND HYDRAULIC CHARACTERIZATION OF THE HOLES OF A FIVE-HOLE, VALVE-COVERED-ORIFICE NOZZLE OF AN ELECTRONICALLY CONTROLLED DIESEL INJECTOR
Atomization and Sprays, Vol.6, 1996, issue 3
D. Laforgia, V. Damiani, R. Campanella
VISUALIZATION OF THE MIXING OF INTERMITTENT NATURAL GAS AND LIQUID DIESEL FUEL SPRAYS FROM HIGH-PRESSURE NOZZLES
Journal of Flow Visualization and Image Processing, Vol.18, 2011, issue 1
Brian E. Milton, Timothy R. White