한국전산유체공학회:학술대회논문집
- 한국전산유체공학회 2001년도 춘계 학술대회논문집
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- Pages.99-104
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- 2001
충격파 불안정성을 제거한 개선된 Roe 수치기법의 개발
Cures for Shock Instability: Development of an Improved Roe scheme
- 발행 : 2001.05.01
초록
This paper deals with the development of shock stable scheme that is free from shock instability. Roe's FDS is known to preserve good accuracy but to suffer from shock instability, i.e. the carbuncle phenomenon. As the first step toward the shock stable scheme, Roe's FDS is compared with HLLE scheme to identify the source of shock instability. Then control function f is introduced into the pressure term in Roe's FDS to cure shock instability. Various numerical tests concerned with shock instability are performed to demonstrate the shock stability of the proposed scheme.
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