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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술대회자료
- 저자정보
- 발행연도
- 2006.5
- 수록면
- 85 - 88 (4page)
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초록· 키워드
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In this paper, Boundary penalized technique efficient to complex geometries or moving boundary problems is proposed. Being similar to Immersed Boundary Method, Boundary penalized technique is novel CFD methodology which is able to simulate flow analysis with satisfying complex boundary condition on simple orthogonal grid such as Cartesian grid. Boundary penalized technique represented in this paper is a kind of penalty method to enforce satisfying boundary condition in the penalty layer, it is different from conventional Immersed boundary method needed some interpolation procedure to add momentum source term. This technique satisfies no-slip condition easily on complex geometries, and need not any complex interpolation and it is stable numerically.
Numerical method in this study is 2nd order time accuracy Fractional step method, convection term is treated as 2nd Adams-Bashforth method, diffusion term is treated as Crank-Nicholson method. Grid type is staggered grid, it has advantage on simple orthogonal grid. Discretized momentum equations are solved using SIP method and pressure-correction equation is solved by multi grid method with incomplete LDL conjugate gradient smoother.
Lid-driven cavity flow and flow around a cylinder problem is considered to verify boundary penalized technique. It shows good results compared with other research, so boundary penalized technique has powerful efficiency like to other Immersed boundary method.
Numerical method in this study is 2nd order time accuracy Fractional step method, convection term is treated as 2nd Adams-Bashforth method, diffusion term is treated as Crank-Nicholson method. Grid type is staggered grid, it has advantage on simple orthogonal grid. Discretized momentum equations are solved using SIP method and pressure-correction equation is solved by multi grid method with incomplete LDL conjugate gradient smoother.
Lid-driven cavity flow and flow around a cylinder problem is considered to verify boundary penalized technique. It shows good results compared with other research, so boundary penalized technique has powerful efficiency like to other Immersed boundary method.
목차
ABSTRACT
NUMERICAL METHOD
BOUNDARY PENALIZED METHOD
NUMERICAL EXPREIMENTS
REFERENCE
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UCI(KEPA) : I410-ECN-0101-2009-410-014678629