International Journal of Fluid Machinery and Systems

Korean Society for Fluid machinery (한국유체기계학회)
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Free Surface Vortex in a Rotating Barrel with Rods of Different Heights

  • Zhang, Xiaoyue (School of Energy and Power Engineering, University of Shanghai for Science and Technology) ;
  • Zhang, Min (Department of Mechanical and Electrical Engineering, Henan Mechanical and Electrical Engineering College) ;
  • Chen, Wanyu (School of Energy and Power Engineering, University of Shanghai for Science and Technology) ;
  • Yang, Fan (School of Energy and Power Engineering, University of Shanghai for Science and Technology) ;
  • Guo, Xueyan (School of Energy and Power Engineering, University of Shanghai for Science and Technology)
  • Received : 2016.02.10
  • Accepted : 2016.02.25
  • Published : 2016.12.31
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Abstract

A bathtub vortex above the outlet of a rotating barrel is simulated. By analyzing the Ekman layer theory, it can be found that the main flow circulation is inversely proportional to the thickness of Ekman layer. The thicker the Ekman boundary layer, the weaker the rotational strength and the shorter of the length of gas core is. According to this law, models of barriers with rods of different heights are established. The reduction of air-core length in this air entrainment vortex and weakening the strength of rotation field were achieved.

Keywords

Acknowledgement

Supported by : Science and Technology Commission of Shanghai Municipality, University of Shanghai for Science and Technology

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