Effects of Nozzle Geometry on Cavitation in Nozzles of Pressure Atomizers
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概要
- 論文の詳細を見る
The effects of nozzle geometry on cavitation in the nozzle of pressure atomizers and the liquid jet are examined using various two-dimensional (2D) nozzles with different geometries. Then, whether or not the conventional cavitation numbers can be used to predict the formation of supercavitation, in which liquid jet atomization is enhanced, is examined. As a result, we confirm that (1) the thickness of the cavitation zone increases with the ratio Cu of the cross-sectional area upstream of the nozzle to that of the nozzle, (2) the spray angle increases with Cu, (3) the formation of supercavitation can be predicted using the cavitation number σc in which the effects of the flow contraction and the frictional pressure drop are taken into account, and (4) the conventional cavitation numbers σ, σ2 and σ3 cannot predict the formation of supercavitation in nozzles with different geometries.
- 社団法人 日本機械学会の論文
著者
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TOMIYAMA Akio
Graduate School of Engineering, Kobe University
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Maulana Muhammad
Graduate School Of Engineering Kobe Univ.
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SOU Akira
Graduate School of Engineering, Kobe University
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ISOZAKI Kenji
Graduate School of Engineering, Kobe University
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HOSOKAWA Shigeo
Graduate School of Engineering, Kobe University
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