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

The Korean Society of Mechanical Engineers (대한기계학회)
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Unstructured Pressure Based Method for All Speed Flows

전 속도영역 유동을 위한 비정렬격자 압력기반해법

  • 최형일 (한양대학교 대학원 기계공학과) ;
  • 이도형 (한양대학교 기계·정보경영학부) ;
  • 맹주성 (한양대학교 기계공학부)
  • Published : 2002.11.01
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Abstract

This article proposes a pressure based method for predicting flows at all speeds. The compressible SIMPLE algorithm is extended to unstructured grid framework. Convection terms are discretized using second-order scheme with deferred correction approach. Diffusion term discretization is based on structured grid analogy that can be easily adopted to hybrid unstructured grid solver. This method also uses node centered scheme with edge based data structure for memory and computing time efficiency of arbitrary grid types. Both incompressible and compressible benchmark problems are solved using the above methodology. The demonstration of this method is extended to slip flow problem that has low Reynolds number but compressibility effect. It is shown that the proposed method can improve efficiency in memory usage and computing time without losing any accuracy.

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References

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