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논문 기본 정보
- 자료유형
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- 저자정보
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- 한국산업응용수학회 JOURNAL OF THE KOREAN SOCIETY FOR INDUSTRIAL AND APPLIED MATHEMATICS Journal of the Korean Society for Industrial and Applied Mathematics Vol.10 No.2
- 발행연도
- 2006.12
- 수록면
- 85 - 103 (19page)
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초록· 키워드
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Discontinuous Galerkin (DG) method was introduced to computational fluid dynamics area mainly for high order of accuracy on unstructured meshes which is one of the weak points of conventional finite volume methods (FVM). DG, a derivative of Galerkin method in finite element, has been applied to various fields but still not acceptably demonstrated its ability in discontinuous fluid problems such as Euler equations. Therefore in this research, we proposed a strictly monotonic limiter for stability of the scheme and analyzed oscillatory characteristics of DO. Through a comparative study with FVM, we came to conclude that DG can be a substitute for FVM in continuous fluid problems on unstructured meshes due to the accurate character of DG; however, to be an alternation of FVM in discontinuous fluid problems, DG has limitations such as inefficiency and lack of optimized limiter.
목차
ABSTRACT
1. INTRODUCTION
2. DISCONTINUOUS GALERKIN METHOD (DG)
3. LIMITING PROCESS
4. UNSTABLE CHARACTER OF DG
5. DG AND FVM
6. CONCLUSION
ACKNOWLEDGEMENT
REFERENCE
AUTHORS
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UCI(KEPA) : I410-ECN-0101-2009-410-014781783