대한기계학회논문집B (Transactions of the Korean Society of Mechanical Engineers B)

  • 제26권2호
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  • Pages.194-200
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  • 2002
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  • 1226-4881(pISSN)
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  • 2288-5324(eISSN)
대한기계학회 (The Korean Society of Mechanical Engineers)
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Vortex-in-Cell법에 있어 랜덤워크법에 의한 점성효과

Viscous Effect by Random Walk Method in VIC Method

  • 발행 : 2002.02.01
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초록

A method for simulating flow of extremely low Reynolds number in a vortex-in-cell (VIC) was studied. The viscous diffusion was represented by the random walk method. The validity of this method was proven by applying it to the flows passing over a fence placed vertically at an extremely low Reynolds number. The effects of parameters of the VIC method on the random walk method, such as the number of point vortices, the mesh density and the time increment, were investigated by numerical analysis using a one-dimensional diffusion equation. Changes in the relative error of vorticity depending on those parameters were clarified.

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참고문헌

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