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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 대한기계학회 Journal of Mechanical Science and Technology Journal of Mechanical Science and Technology Vol.21 No.8
- 발행연도
- 2007.8
- 수록면
- 1,306 - 1,319 (14page)
이용수
초록· 키워드
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With the conventional computational fluid dynamics (CFD) approaches like unstructured high-density mesh method, the problem about the solution dependencies on the grid and on the physical models isn't completely resolved. In this study, thus, a new approach named Building-Cube Method based on a Cartesian mesh is proposed using a high-density mesh in order to solve the problem of the current CFD approaches. In the present method, a flow field is divided into a number of cubes (squares in 2D) of various sizes. Each cube is a computational sub-domain with Cartesian mesh of equal spacing and equal number of nodes. The geometrical size of each cube is determined by adapting to geometry and flow features so as to cope with broadband characteristic lengths of the flow. Equal spacing and equal number of Cartesian mesh in each cube make it easy to parallelize the flow solver and to handle huge data output. The method is applied to several airfoils including NACA0012 and two-element airfoils at relatively low Reynolds number, RAE2822 airfoil with transition trip at high Reynolds number and a four-element airfoil at high Reynolds number. These results validate the capability of the present approach.
목차
Abstract
1. Introduction
2. Building-Cube Method
3. Generation of 2D BCM mesh
4. Numerical method
5. Adaptive cube refinement
6. Computational results
7. Conclusions
References
참고문헌 (13)
참고문헌 신청
Cook, P. H., McDonald, M. A. and Firmin, M. C. P., 1979, “Airfoil RAE 2822 – Pressure Distributions, and Boundary Layer and Wake Measurements,” Experimental Data Base for Computer Program Assessment, AGARD-AR-138, A6.
Goldberg, U. C. and Ramakrishnan, S. V., 1993, “A Pointwise Version of Baldwin-Barth Turbulence Model,” Comp. Fluid Dyn., Vol. 1, pp. 321~338.
http://www.openmp.org
Kim, L. S. and Nakahashi, K., 2003, “Navier-Stokes Computations of Multi-element Airfoils,” Computational Fluid Dynamics Journal, Vol.12, No.13, pp. 107~114.
Matsuno, K., 1993, “Improvement and Assessment of an Arbitrary-Higher-Order Time-Accurate Algorithm,” Computer and Fluids, Vol. 22, No. 2/3, pp. 311~322.
Goldberg, U. C. and Ramakrishnan, S. V., 1993, “A Pointwise Version of Baldwin-Barth Turbulence Model,” Comp. Fluid Dyn., Vol. 1, pp. 321~338.
http://www.openmp.org
Kim, L. S. and Nakahashi, K., 2003, “Navier-Stokes Computations of Multi-element Airfoils,” Computational Fluid Dynamics Journal, Vol.12, No.13, pp. 107~114.
Matsuno, K., 1993, “Improvement and Assessment of an Arbitrary-Higher-Order Time-Accurate Algorithm,” Computer and Fluids, Vol. 22, No. 2/3, pp. 311~322.
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