제목(국문) | Hybrid RANS/LES 방법을 이용한 아음속 공동 유동의 수치적 모사 |
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제목(영문) | Hybrid RANS/LES Simulation of Subsonic Cavity Flow |
저자 |
장경식
(K.S.Chang
,한국과학기술원 항공우주공학과
)
▷공저자 네트워크 보기
박승오 (S.O.Park ,한국과학기술원 항공우주공학과 ) ▷공저자네트워크등록하기 최석기 (S.K.Choi ,한국원자력연구소 ) ▷공저자네트워크등록하기 |
초록 | A numerical simulation of an incompressible cavity flow is conducted using the hybrid turbulence model. The model adopted is a modified type of DES using k-ε two-equation model. Cavity geometry and flow condition are based on Cattafesta's experiment. Computational results are compared with the results of Cattafesta's experiment. The simulation successfully predicts the oscillatory features and the Strouhal number of the oscillation compares very favorably with that of the dominant mode of experimental data. Vorticity contours obtained from the simulation data are consistent with the smoke visualization of the Cattafesta's experiment. The coherent structures of cavity flow are also investigated using Q criterion. |
keyword | 혼합 RANS/LES(Hybrid. RANS/LES), 공동 유동(Cavity flow), 수치해석(Simulation), DES(DES) |
저널명 | 한국전산유체공학회지 ▷관련저널보기 |
VOL | 9 |
PAGE | 23-29 |
발표년도 | 2004 |
원문파일 |
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