Mass transport using the series of vortex rings with swirl

• NAITOH Takashi

  Graduate School of Engineering, Nagoya Institute of Technology

• OKURA Nobuyuki

  Department of Vehicle and Mechanical Engineering, Meijo University

• SUMITOMO Osamu

  Graduate School of Engineering, Nagoya Institute of Technology

抄録

Behavior of the series of laminar vortex rings with circumferential flow, so-called swirl, were investigated using flow visualization, to evaluate the transport efficiency of the ejected fluid as vortex rings. In this study, the interval time of the vortex ring ejection, the formation number of vortex ring L_O/D_O (the normalized length of the ejected slug of fluid), and the angular velocity of the ejected fluid ω are changed, while the mean ejection velocity is fixed. When vortex rings were generated at a short time interval, independent of L_O/D_O and ω, they were broken, and most of the fluid included in them was diffused near the orifice. When the vortex rings with little mutual interference were generated at an appropriate interval time, the breakdown of vortex ring structure is suppressed with moderate swirling flow. In those cases, each vortex ring moves separately for a long distance and the distribution area becomes wider as L_O/D_O increases.

収録刊行物

• Journal of Fluid Science and Technology

  Journal of Fluid Science and Technology 9 (3), JFST0060-JFST0060, 2014

  一般社団法人 日本機械学会

キーワード

• Vortex rings
• Swirl
• Mass transport
• Formation number
• Flow visualization

詳細情報

• CRID: 1390282680223774720
• NII論文ID: 120006667593
• NII論文ID: 130004695329
• DOI: 10.1299/jfst.2014jfst0060
• ISSN: 18805558
• Web Site: http://id.nii.ac.jp/1476/00005947/
• Web Site: https://www.jstage.jst.go.jp/article/jfst/9/3/9_2014jfst0060/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • IRDB
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可