Large Eddy Simulation of Turbulent Flow in Concentric Annuli with a Thin Inner Rod

  • Shin-ichi Satake
  • Hiroshi Kawamura
Conference paper


The large eddy simulations are performed for annular flows with radius ratios of 0.1,0.04, and 0.02. Comparison with the existing experimental data of Rehme revealed that the asymmetrical velocity field and the turbulence quantities are well reproduced by the present calculations. The production rate of turbulence energy is suppressed in the inner wall region; and thus the decrease in the peak of the turbulence energy is observed. The turbulence structures in the inner wall region are visualized by using computer graphics. The high and low speed streaks, which exist in the channel flow, are also observed over the surface of an inner rod. In the case of a thick rod, a lateral pairing of the ejection and the sweep is observed over an inner rod. In the case of a thin rod, a wake-like low pressure region is caused by a high speed streak on the opposite side of the high pressure region.


Turbulent Kinetic Energy Large Eddy Simulation Radius Ratio Reynolds Shear Stress Shear Stress Distribution 
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Copyright information

© Springer-Verlag Berlin Heidelberg 1995

Authors and Affiliations

  • Shin-ichi Satake
    • 2
  • Hiroshi Kawamura
    • 1
  1. 1.Department of Mechanical Engineering, Faculty of Science and EngineeringScience University of TokyoNoda-shi, Chiba-kenJapan
  2. 2.Department of Mechanical EngineeringThe University of TokyoHongo, Bunkyo-kuJapan

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