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: 1.262 5年インパクトファクター: 1.518 SJR: 0.814 SNIP: 1.18 CiteScore™: 1.6

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

巻:
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.v20.i1.40
pages 41-55

EFFECT OF RECESS ON MIXING AND ATOMIZATION CHARACTERISTICS OF LIQUID-LIQUID SWIRL COAXIAL INJECTORS

Dongjun Kim
School of Mechanical and Aerospace Engineering, Seoul National University, Shinlim-dong, Gwanak-gu, Seoul, Korea, 151-742
Sunghyuk Kim
Institute of Advanced Aerospace Technology, School of Mechanical and Aerospace Engineering, Seoul National University, San 56-1, Shillim-dong, Gwanak-gu, Seoul, 151-742, KOREA
Poonggyoo Han
School of Mechanical and Aerospace Engineering, Seoul National University, Shinlim-dong, Gwanak-gu, Seoul, Korea, 151-742
Youngbin Yoon
Department of Mechanical and Aerospace Engineering, Seoul National University, Seoul, 08826, Republic of Korea

要約

The effects of recess on the mixing and atomization characteristics of a liquid-liquid swirl coaxial injector were investigated in eight cases of recess length. The orifice recess, a geometric parameter, has a strong influence on the coaxial spray because it varies the interaction position between two liquid sheets. The concentration-sensitive mass distribution and mixing efficiency were measured by using the planar liquid laser-induced fluorescence method. It was found that the mixing efficiencies in the internal mixing injection were higher than those in the external or tip mixing injection by about 10% at axial locations of more than 3 cm. The mixing efficiency slightly decreased in the internal mixing injection as the recess number increased. This is due to the increase of the discharge coefficient and breakup length with the increase of the recess number in internal mixing injection. In addition, the mean drop sizes according to the recess number were measured using an image-processing method. The internal interaction of two propellants led to the increase of the effective film thickness at the injector exit, and thus the disintegrated drop size increased. As a result, the increase in the recess number resulted in the increase in SMD of liquid-liquid swirl coaxial injectors.


Articles with similar content:

EFFECT OF NOZZLE HOLE GEOMETRY ON NON-EVAPORATING DIESEL SPRAY CHARACTERISTICS AT HIGH-PRESSURE INJECTION
Atomization and Sprays, Vol.22, 2012, issue 1
Jangsik Kong, Choongsik Bae
SPRAY CHARACTERISTICS OF AN AIR-DRIVEN ROTARY ATOMIZER WITH A DOUBLE-LAYER CUP FOR USE IN AN INDUSTRIAL OIL BURNER
Atomization and Sprays, Vol.20, 2010, issue 7
Daejin Cho, Suckju Yoon, Youngha Choi, Jaiho Lee
A COMPARISON OF DIESEL AND JATROPHA METHYL ESTER (JME) SPRAY CHARACTERISTICS: EFFECT OF NOZZLE ENTRY RADIUS
Atomization and Sprays, Vol.26, 2016, issue 10
R. V. Ravikrishna, Prasad Boggavarapu
ROLE OF GEOMETRIC PARAMETERS ON THE DROP SIZE CHARACTERISTICS OF LIQUID-LIQUID COAXIAL SWIRL ATOMIZERS
Atomization and Sprays, Vol.8, 1998, issue 5
D. Sivakumar, B. N. Raghunandan
INTERNAL FLOW CHARACTERISTICS OF LIQUID-LIQUID SWIRL COAXIAL INJECTORS WITH DIFFERENT RECESS LENGTHS AND OXIDIZER-FUEL RATIOS
Atomization and Sprays, Vol.21, 2011, issue 12
Sunghyuk Kim, Jungsoo Yoon, Youngbin Yoon