한국전산유체공학회:학술대회논문집
- 한국전산유체공학회 1997년도 추계 학술대회논문집
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- Pages.86-91
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- 1997
Chimera 격자 기법을 이용한 Car-like body 주위의 전체 유동 해석
Full flow analysis around a Car-like body using Chimera grid technique
초록
This paper describes analysis of complex flow around Car-like body using Chimera grid technique. As a computational algorithm, Pullboat and Chaussee's Diagonal algorithm is selected to reduce computational time. Introducing hole points flag to this Diagonal algorithm, an algorithm for Chimera grid is generated easily. This study solves 3-D unsteady incompressible Navier-Stokes equations on a non-orthogonal curvilinear coordinate system using second-order accurate schemes for the time derivatives, and third/second-order scheme for the spatial derivatives. The Marker-and-Cell concept is applied to efficiently solve continuity equation. The fourth-order artificial damping is added to the continuity equation for numerical stability, It has concluded that the results of present study properly agree with physical flow phenomena.
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