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BFS 유동장의 주파수 응답특성 고찰

한글로보기

https://www.riss.kr/link?id=A60152087

저자

이진익(J.I. Lee) ; 이은석(E.S. Lee) ; 전병을(B.E. Jun) ; 이광섭(K.S. Lee)
발행기관
한국전산유체공학회
학술지명
한국전산유체공학회 학술대회논문집
권호사항

Vol.2012 No.5 [2012]
발행연도
2012
작성언어
Korean
주제어

유동장 모델링(Flow Field Modeling) ; 후향계단(Backward Facing Step) ; 주파수 응답(Frequency Response)
KDC
559
자료형태
학술저널
발행기관 URL
http://www.kscfe.or.kr
수록면

366-369(4쪽)
제공처
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다국어 초록 (Multilingual Abstract)

A series of the frequency response analysis of the BFS(Backward Facing Step) flow field, is peformed from the control point of view. We have made a close investigation of the flow field model step by step in constructing a flow control loop. First the vortex flow at the natural free stream state is characterized. The changes by reduced order modeling using the POD method are analyzed. Consecutively it is compared the frequency responses of the vortices before and after the forcing inputs. Finally the frequency characteristics of the flow field model with an ANN-ARX(Artificial Neural Network-Autoregressive Exogenous) structure for the low order modeling are analyzed in detail.

번역하기

A series of the frequency response analysis of the BFS(Backward Facing Step) flow field, is peformed from the control point of view. We have made a close investigation of the flow field model step by step in constructing a flow control loop. First the...

A series of the frequency response analysis of the BFS(Backward Facing Step) flow field, is peformed from the control point of view. We have made a close investigation of the flow field model step by step in constructing a flow control loop. First the vortex flow at the natural free stream state is characterized. The changes by reduced order modeling using the POD method are analyzed. Consecutively it is compared the frequency responses of the vortices before and after the forcing inputs. Finally the frequency characteristics of the flow field model with an ANN-ARX(Artificial Neural Network-Autoregressive Exogenous) structure for the low order modeling are analyzed in detail.