• 제목/요약/키워드: 동차 속도-압력방식

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유선상류 유한요소법을 이용한 유동장의 해석 (An Analysis of Fluid Flow Using the Streamline Upwinding Finite Element Method)

  • 최형권;유정열
    • 대한기계학회논문집
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    • 제18권3호
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    • pp.624-634
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    • 1994
  • A numerical method which combines equal-order velocity-pressure formulation originated from SIMPLE algorithm and streamline upwinding method has been developed. To verify the proposed numerical method, we considered the lid-driven cavity flow and backward facing step flow. The trend of convergence history is stable up to the error criterion beyond which the maximum value of error is oscillatory due4 to the round-off error. In the present study, all results were obtained with the single precision calculation up to the given error criterion and it was found to be sufficient for our purpose. The present results were then compared with existing experimental results using laser doppler velocimetry and numerical results using finite difference method and mixed interpolation finite element method. It has been shown that the present method gives accurate results with less memories and execution time than the coventional finite element method.