• Title/Summary/Keyword: Radial-Exponential Scheme

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A Discretization Method Via a Radial-Exponential Scheme in the Cylindrical Coordinate (원통좌표계에서 반경지수도식에 의한 이산화방법)

  • Kim, Charn-Jung
    • Transactions of the Korean Society of Mechanical Engineers B
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    • v.24 no.5
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    • pp.694-698
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    • 2000
  • In the cylindrical coordinate, the origin r = 0 plays a role of the singularity and thus much care is needed to treat near-origin region. This work presents a new numerical scheme which is derived from the exact solution under the one-dimensional assumption in the radial direction. It is shown that the near-origin region can be properly treated by the radial-exponential scheme, whereas the numerical results from the conventional exponential scheme deviate considerably from the exact solution. Over the region of small ($ {\delta}r_e/r_e$ the present radial-exponential scheme turns out to be almost the same as the exponential scheme.