Proceedings of the KSME Conference (대한기계학회:학술대회논문집)
- 2002.08a
- /
- Pages.807-810
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- 2002
On Large Eddy Simulation with Centered and Upwind Compact Difference Schemes
중심 및 상류 컴팩트 차분기법을 적용한 난류유동의 LES
- Park Noma (Seoul National University) ;
-
Yoo Jung Yul
(Seoul National University)
;
-
Choi Haecheon
(Seoul National University)
- Published : 2002.08.01
Abstract
The suitability of high-order accurate, central and upwind-biased compact difference schemes is evaluated for the large-eddy simulations of flows in complex geometry. Two flow geometries are considered: channel and circular cylinder. The effects of numerical dissipation and aliasing error on the evaluation of subgrid scale stress are investigated by extending the analysis by Ghosal (1) to centered and upwind compact schemes. It is shown that the failure of upwind schemes mainly comes from the aliasing error.