• Title, Summary, Keyword: Stewartson layer

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Flow Analysis in a Rotating Container with Axial Injection and Radial Ejection (축방향 유입과 반경방향 유출이 있는 회전용기 내의 유동해석)

  • Park, Jun-Sang;Sohn, Jin-Gug
    • Journal of the Korean Society of Visualization
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    • v.9 no.1
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    • pp.49-54
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    • 2011
  • An investigation has been made of a viscous incompressible flow in a circular cylindrical tank. The flow is driven by the spinning bottom disk of tank together with/without central injection and radial uniform-ejection through the sidewall. Numerical solutions of steady and unsteady flows to 3-dimensional Navier-Stokes equation were obtained for several cases of injection strength. In a moderate flow rate of injection, the mass transfer occurs through the boundary layers but, as the flow rate increases, the inner region far from the container walls takes part in mass transfer.

Flows in a confined cylindrical container with differential rotating top and bottom disks (속도차를 갖는 두 회전판에 의해 유도되는 원통 내부 유동)

  • Park, Jun-Sang
    • 한국전산유체공학회:학술대회논문집
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    • pp.487-490
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    • 2008
  • A theoretical study is made of the flow in a confined cylindrical container with differential rotating top and bottom disks. Two kinds of theoretical solution for the azimuthal velocity were obtained: one is an exact solution of Bessel function type and the other is an approximate solution of exponential function type which comes from WKB approximation. Both theoretical solutions are shown to be self consistent with each other as well as a good agreement with previous studies. Moreover, in a range of relatively low Reynolds number, the obtained solution of Bessel function type shows better result than previous solutions.

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