ライブラリ登録: Guest
Begell Digital Portal Begellデジタルライブラリー 電子書籍 ジャーナル 参考文献と会報 リサーチ集
Atomization and Sprays
インパクトファクター: 1.737 5年インパクトファクター: 1.518 SJR: 0.814 SNIP: 1.18 CiteScore™: 2.2

ISSN 印刷: 1044-5110
ISSN オンライン: 1936-2684

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

Atomization and Sprays

DOI: 10.1615/AtomizSpr.2015013501
pages 939-959

EFFECTS OF ASYMMETRIC INFLOW ON CAVITATION IN FUEL INJECTOR AND DISCHARGED LIQUID JET

Akira Sou
Graduate School of Maritime Sciences, Kobe University, Japan
Raditya Hendra Pratama
Graduate School of Maritime Sciences, Kobe University, 5-1-1, Fukaeminami, Higashinada, Kobe 658-0022, Japan; Research Institute for Energy Conservation, National Institute of Advanced Industrial Science and Technology, Japan

要約

Fuel injection technology plays an important role in improving the thermal efficiency and reduction of exhaust gas emissions of diesel engines. In the nozzle of a fuel injector, cavitation takes place and enhances the atomization of fuel spray. In a multihole injector, an asymmetric inflow into the nozzle may play a dominant role in cavitation and discharged liquid jet. In this study cavitation in various nozzles with different needle lifts and different nozzle lengths with an asymmetric inflow and discharged liquid jet are visualized and analyzed. As a result, we conclude that (1) cavitation occurs asymmetrically due to the asymmetric inflow; (2) an asymmetric cavitation induces asymmetric liquid jet and spray; (3) thick and long cavitation is formed due to large lateral momentum at the inlet corner of the nozzle, which induces a large deformation of the liquid jet especially when the needle lift is small; (4) jet angle is large in short nozzles; and (5) a modified cavitation number which takes into account the flow contraction at vena contracta can be utilized to predict cavitation length in a nozzles with various needle lifts.


Articles with similar content:

STRING CAVITATION IN A FUEL INJECTOR
Atomization and Sprays, Vol.27, 2017, issue 3
Tokihiro Katsui, Akira Sou, Shigeru Nishio, Raditya Hendra Pratama
SPRAY CHARACTERISTICS OF AN OPEN-END SWIRL INJECTOR
Atomization and Sprays, Vol.22, 2012, issue 5
Wei Zhang, Qing-Fei Fu, Kun-Da Cui, Li-Jun Yang
EFFECT OF NOZZLE GEOMETRY ON BREAKUP LENGTH AND TRAJECTORY OF LIQUID JET IN SUBSONIC CROSSFLOW
Atomization and Sprays, Vol.21, 2011, issue 10
Baafour Nyantekyi-Kwakye, Madjid Birouk, Neil Popplewell
Characteristics of the Internal Flow in a Diesel Injection Nozzle
International Journal of Fluid Mechanics Research, Vol.24, 1997, issue 1-3
Keiya Nishida, Hiroyuki Hiroyasu, J. H. Kim
MACROSCOPIC SPRAY CHARACTERISTICS OF A POROUS INJECTOR
Atomization and Sprays, Vol.24, 2014, issue 1
Inchul Lee, Dohun Kim, Jaye Koo