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Atomization and Sprays
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ISSN Print: 1044-5110
ISSN Online: 1936-2684

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Atomization and Sprays

DOI: 10.1615/AtomizSpr.v11.i2.20
14 pages

ENHANCEMENT OF THE ATOMIZATION OF A LIQUID JET BY CAVITATION IN A NOZZLE HOLE

N. Tamaki
Department of Mechanical Engineering, Kinki University Takaya, Umenobe, Higashi Hiroshima, 739-2116, Japan
M. Shimizu
Department of Mechanical Engineering, Kinki University Takaya, Umenobe, Higashi Hiroshima, 739-2116, Japan
Hiroyuki Hiroyasu
Institute of Industrial Technology, Kinki University, Higashi-Hiroshima, Japan

ABSTRACT

It has been clarified that great turbulence in the nozzle hole, due to cavitation phenomena, contributes greatly to the disintegration of the liquid jet. When cavitation occurs in the nozzle hole, the atomization of the liquid jet is enhanced considerably. On the basis of the result, this article presents a method for obtaining an excellent spray under low injection pressure, using the disturbance of the liquid flow caused by cavitation. The results of the present study indicate that enhancement of the atomization of the liquid jet is possible by simply installing a wire net over the inlet of the nozzle bole and making a gap at the nozzle hole.


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