와도장에 근거한 후류 가시화 기법|RISS 상세보기

와도장에 근거한 후류 가시화 기법

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https://www.riss.kr/link?id=A76572037

저자

이경세(K.S. Lee) ; 백제현(J.H. Baek)
발행기관
한국전산유체공학회
학술지명
한국전산유체공학회 학술대회논문집
권호사항

Vol.2009 No.11 [2009]
발행연도
2009
작성언어
Korean
주제어

와류(Vortex) ; 가시화(Visualization) ; 와도(Vorticity) ; 라플라시안(Laplacian) ; 헤시안 매트릭스(Hessian matrix)
KDC
559
자료형태
학술저널
발행기관 URL
http://www.kscfe.or.kr
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44-48(5쪽)
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다국어 초록 (Multilingual Abstract)

In this study, a vortex visualization method based on the vorticity magnitude is developed. One of the simplest models jar a vortex is a vortex filament with the maximum vorticity on its center. The proposed method is based on the observation of this ideal distribution of vorticity magnitude. Laplacian and Hessian matrix of vorticity magnitude are tested for detecting the local maximum of vorticity magnitude. These ideas were applied to wake flow past a sphere. It was found that the Laplacian method is not able to distinguish vortices from the underlying shear layer clearly, while the Hessian matrix method does not suffer from this problem.

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In this study, a vortex visualization method based on the vorticity magnitude is developed. One of the simplest models jar a vortex is a vortex filament with the maximum vorticity on its center. The proposed method is based on the observation of this ...

In this study, a vortex visualization method based on the vorticity magnitude is developed. One of the simplest models jar a vortex is a vortex filament with the maximum vorticity on its center. The proposed method is based on the observation of this ideal distribution of vorticity magnitude. Laplacian and Hessian matrix of vorticity magnitude are tested for detecting the local maximum of vorticity magnitude. These ideas were applied to wake flow past a sphere. It was found that the Laplacian method is not able to distinguish vortices from the underlying shear layer clearly, while the Hessian matrix method does not suffer from this problem.