방향성을 갖는 비정렬 삼각형격자를 이용한 단조 유선 Upwind 유한요소해석The Monotone Streamline Upwind Finite Element Method Using Directionally Aligned Unstructured Grids

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Rices monotone streamline upwind finite element method, which was proposed to treat convection-dominated flows, is applied to the linear triangular element. An alignment technique of unstructured grids with given velocity fields is used to prevent the interpolation error produced in evaluating the convection term in the upwind method. The alignment of grids is accomplished by optimizing a target function defined with the inner-product of a properly chosen side vector in the element with the velocity field. Two pure advection problems are considered to demonstrate the superiorities of the present approach in solving the convection-dominated flow on the unstructured grid. Solutions obtained with aligned grids are much closer to the exact solutions than those with initial regular grids. The capability of the present approach in predicting the appearance of the secondary vortex in the laminar confined jet impingement is shown by comparing streamlines to those produced by SIMPLE on a highly stretched grid toward the impingement plate.
Publisher
한국전산유체공학회
Issue Date
1998-01
Language
English
Citation

한국전산유체공학회 학술대회논문집 1997년도 추계, pp.49 - 54

URI
http://hdl.handle.net/10203/75892
Appears in Collection
AE-Journal Papers(저널논문)
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