국내 최대 기계 및 로봇 연구정보

국내학술대회

118

국내학술대회 제목 게시판 내용
제목(국문)	LES를 이용한 열린 공동 유동과 공동 내 물질 확산의 수치적 모사
제목(영문)	LARGE EDDY SIMULATION OF FLOW AND MASS EXCHANGE PROCESSES BETWEEN A CHANNEL AND AN OPEN CAVITY
저자	장경식 (K. S. Chang ,한국과학기술원 항공우주공학전공 ) ▷공저자 네트워크 보기 박승오 (S. O. Park ,한국과학기술원 항공우주공학전공 ) ▷공저자네트워크등록하기 (G Constantinescu ,Assistant professor, University of Iowa IIHR ) ▷공저자네트워크등록하기
초록	Fully three-dimensional Large Eddy SImulation calculations of the flow past 2D cavity are conducted to study the purging of neutrally buoyant or dense miscible contaminants introduced instantaneously inside the cavity. The length to depth ratio(L/D) is 2 and Reynolds number based on the depth is 3,360. Fully developed turbulent inflow are fed at the inlet from precursor simulation of channel flow. Mean flow pattern and unsteady features are investigated based on the experimental data of Pereira and Sousa. From the study of mass exchange processes, it is found that the mechanism of removal of the contaminant is very different between the non-buoyant and buoyant cases. In the buoyant case, internal wave motion which interacts with a strong cavity vortex is dominant in the ejection mechanism of the contaminants.
keyword	대와류모사법(LES), 열린 공동(open cavity), 층류(StratiGed nows), 물질 확산 (scalar transport)
저널명	한국전산유체공학회 추계학술대회 ▷관련저널보기
VOL	5
PAGE	239-243
발표년도	2005
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