지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술대회자료
- 저자정보
- 발행연도
- 2014.10
- 수록면
- 94 - 100 (7page)
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초록· 키워드
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Grid generation in the simulation of unsteady compressible flows is more difficult than that of steady ones. In this paper, the near body region was discretized by using body-fitted structured grids, while the remaining computational domain was tessellated with generated Cartesian grids. By using the alternating digital tree (ADT) algorithm, the computational time of hole-cutting and identification of donor cells during grid generation could be decreased significantly. A compressible solver for unsteady flow problems is then developed. A cell-centered, 2<SUP>nd</SUP>-order accurate finite volume method is employed in spatial discretization, and an implicit dual-time stepping LU-SGS approach is employed in temporal discretization. Feature-based adaptation is used for unsteady flows with stationary boundary. Geometry adaptation is used during simulation steps for moving-boundary problems and the flow solution is interpolated from the old grid to the new grid. Both laminar and turbulent unsteady cases are tested to demonstrate the accuracy and efficiency of the proposed method.
목차
Abstract
1. Introduction
2. Issues on Grid Generation
3. Numerical Method
4. Results and Discussions
5 Conclusions and Future Work
6. References
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