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Flow analysis around a MIRA model using finite element method
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[열유체부문] 유한요소를 이용한 MIRA 모델주위의 유동해석

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Flow analysis around a MIRA model using finite element method
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A finite element code based on P2PI or PIPI tetra element has been developed for the large eddy simulation (LES) of turbulent flows around a complex geometry. Fractional 4-step algorithm is employed to obtain time accurate solution since it is less expensive than the integrated formulation, in which the velocity and pressure fields are solved at the same time. Crank-Nicolson method is used for second order temporal discretizarion and Galerkin method is adopted for spatial discretization. For very high Reynolds number flows, which would require a fom1idable number of nodes to resolve the flow field, SUPG (Streamline Upwind Petrow-Galerkin) method is applied. As a benchmark problem for code validation. turbulent flows around a sphere and turbulent channel flows
have been studied at various Reynolds numbers. Turbulent flow around MIRA model has been solved using P2PI element and Smagorinsky model at Re= 2.6 x 106. Furthermore, a parallel code based on domain-decomposition method using PIPI element has been developed for LES of turbulent flow and tested with turbulent channel flows. Turbulent flow analysis around MIRA model using the present LES-parallel code is ongoing and will be presented in the near future

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ABSTRACT

1. 서론

2. 지배방정식 및 수치기법

3. 수치결과

4. 결론

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UCI(KEPA) : I410-ECN-0101-2009-556-014008340