On the rupture of a round liquid jet: the primary atomization process

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• 作者：Felix Barreras ; Antonio Lozano…
• 关键词：Atomization ; Pressure ; Sprays ; Scaling ; SMD
• 刊名：Journal of the Brazilian Society of Mechanical Sciences and Engineering
• 出版年：2016
• 出版时间：January 2016
• 年：2016
• 卷：38
• 期：1
• 页码：77-83
• 全文大小：642 KB
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• 作者单位：Felix Barreras (1)
  Antonio Lozano (1)
  Oscar Sotolongo-Costa (2)
  Enrique López-Pagés (3)
  
  1. LITEC, CSIC-Univ, Zaragoza. Maria de Luna 10, 50018, Saragossa, Spain
  2. Departamento de Física Teórica, Facultad de Física, Universidad de la Habana, 10400, La Habana, Cuba
  3. Fluid Mechanics Group, School of Engineering, University of Zaragoza, Maria de Luna 3, 50015, Saragossa, Spain
  
• 刊物主题：Mechanical Engineering;
• 出版者：Springer Berlin Heidelberg
• ISSN：1806-3691

文摘

The present study analyzes the process of fragmentation of a liquid volume into a cloud of droplets, a well-known phenomenon usually denoted as primary atomization. The experimental work was performed in a single-orifice pressure-swirl atomizer. For the first time, a transition was observed in the droplet size distribution function (DSDF) that transforms from a Nukiyama–Tanasawa type to a power law dependence described by the function d −x . A non-dimensional group including atomizing pressure was identified as the controlling parameter in the transition, as in other similar fracture processes, for example in solid materials. The value obtained for the critical exponent of a power law function that best fitted the DSDF for the maximum atomizing pressure is a quantitative evidence of the three-dimensional characteristics of this process. Keywords Atomization Pressure Sprays Scaling SMD