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.v7.i2.40
pages 161-181

INDEPENDENT CONTROL OF LIQUID FLOW RATE AND SPRAY DROPLET SIZE FROM HYDRAULIC ATOMIZERS

D. Ken Giles
Department of Biological and Agricultural Engineering, University of California—Davis, Bainer Hall, One Shields Avenue, Davis, CA 95616, USA

要約

Independent control of the temporally averaged liquid flow rate and the droplet size spectrum emitted from hydraulic atomizers was achieved by coupling control of liquid supply pressure and pulse-width modulation (PWM) of instantaneous nozzle flow. Experimental results for a number of atomizer types, typical of agrochemical spraying, indicated that 10:1 flow turndown ratios could be achieved affixed liquid supply pressures. Such capability is useful when a wide range of application rate and rapid response are desired. The spray droplet volume median diameter of emitted spray could be concurrently controlled over a two- to threefold range. The technique is useful when off-target movement of spray material can be reduced by decreasing the volume fraction of spray material contained in small droplets. The dynamic control range allowed eightfold reductions in the spray volume contained in droplets less than 105 μm diameter. The technique was designed for integration into spray application controllers with flow and pressure feedback loops. The technique is limited to spray applications where the nozzle flow is the predominant mechanism for atomization. In situations such as high-speed air flow past a nozzle, the secondary breakup of the emitted spray can reduce the effectiveness of the technique significantly.


Articles with similar content:

ENTRAINMENT CONTROL FOR LIGAMENT-CONTROLLED EFFERVESCENT ATOMIZER SPRAYS
Atomization and Sprays, Vol.13, 2003, issue 5&6
Michael W. Plesniak, T. J. Kuta
INEXPENSIVE AIR-ASSIST ATOMIZATION FROM 80,000 ORIFICES
Atomization and Sprays, Vol.16, 2006, issue 7
Steven Collicott, Thomas J. Hoverman
EFFERVESCENT ATOMIZATION OF HIGH-VISCOSITY FLUIDS: PART I. NEWTONIAN LIQUIDS
Atomization and Sprays, Vol.1, 1991, issue 3
Paul E. Sojka, Harry N. Buckner
DEVELOPMENT OF AN AIR-BLAST ATOMIZER FOR INDEPENDENT CONTROL OF DROPLET SIZE AND SPRAY DENSITY
Atomization and Sprays, Vol.14, 2004, issue 3
C. P. Koshland, R. F. Sawyer, H. L. Clack, D. Lucas
CHALLENGES FOR FUTURE RESEARCH IN ATOMIZATION AND SPRAY TECHNOLOGY: ARTHUR LEFEBVRE MEMORIAL LECTURE
Atomization and Sprays, Vol.16, 2006, issue 7
Norman Chigier