한국전산유체공학회:학술대회논문집

Korean Society of Computational Fluids Engineering (한국전산유체공학회)
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DNS of Vortex Cavitations in Turbulent Separated Layer

  • Kajishima, Takeo (Department of Mechanical Engineering, Osaka University) ;
  • Ohta, Takashi (Department of Mechanical Engineering, Osaka University) ;
  • Sakai, Hiroki (Department of Mechanical Engineering, Osaka University) ;
  • Okabayashi, Kie (Department of Mechanical Engineering, Osaka University)
  • Published : 2006.10.13
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Abstract

We conducted a direct numerical simulation (DNS) to establish database for the purpose of improvement of practical method which is applicable to cavitating turbulent flows. Cavitations caused by spanwise and streamwise vortices, which are typical features in high shear layer, is represented by a simple model and interaction between vortices and cavities is reproduced. The qualitative agreement between computation and experiment are reasonable. Cavities due to streamwise vortices in a shear layer seem to attenuate turbulent eddies.

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