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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 대한기계학회 Journal of Mechanical Science and Technology Journal of Mechanical Science and Technology Vol.21 No.1
- 발행연도
- 2007.1
- 수록면
- 196 - 206 (11page)
이용수
초록· 키워드
오류제보하기
In this study, experimental investigations were made regarding the effect of riblets on the streak instability in boundary layer. The streak instability is now regarded as a major source of the self-regeneration mechanism for the hairpin type coherent structures in turbulent boundary layer flow. Thus, it is important to control the instability to suppress the drag-inducing vortical structure in terms of drag reduction. Toward enhancing the measurement accuracy and spatial resolution, an enlarged version of riblets was applied to a streak which was artificially induced by a micro wing in a laminar boundary layer. It is found that the rib lets have attenuation effect on the streak instability, i.e., to reduce the span wise velocity gradient of the quasi-streamwise streak in boundary layer.
목차
1. Introduction
2. Experimental Appratus
3. Results and Discussion
4. Conclusions
Acknowledgements
References
참고문헌 (19)
참고문헌 신청
Bechert, D. W. and Bartenwerfer, M., 1989, "The Viscous Flows on Surfaces with Longitudinal Ribs," J. Fluid Mech., Vol.206, pp.105~129.
Blackwelder, R. F., 1983, "Analogies Between Transitional and Turbulent Boundary Layers," Phys. Fluids, Vol.26, pp.2807~2815.
Boiko, A. V., Klingmann, B. G., Kozlov, V. V. and Alfredsson, P. H., 1994, "Experiments in a Boundary Layer Subjected to Free Stream Turbulence. Part 2: The Role of TS-Waves in the Transition Process," J. Fluid Mech., Vol.281, pp.219~245.
Boiko, A. V., Kozlov, V. V., Syzrantsev, V. V. and Scherbakov, V. A., 1997, "Transition control by Riblets in Swept Wing Boundary Layer with Embedded Streamwise Vortex," European Journal of Mechanics B/Fluids, Vol.16, pp.465~482.
Boiko, A. V., 2002, "Receptivity of a Flat Plate Boundary Layer to a Free Stream Axial Vortex," European Journal of Mechanics B/Fluids, Vol.21, pp.325~340.
Blackwelder, R. F., 1983, "Analogies Between Transitional and Turbulent Boundary Layers," Phys. Fluids, Vol.26, pp.2807~2815.
Boiko, A. V., Klingmann, B. G., Kozlov, V. V. and Alfredsson, P. H., 1994, "Experiments in a Boundary Layer Subjected to Free Stream Turbulence. Part 2: The Role of TS-Waves in the Transition Process," J. Fluid Mech., Vol.281, pp.219~245.
Boiko, A. V., Kozlov, V. V., Syzrantsev, V. V. and Scherbakov, V. A., 1997, "Transition control by Riblets in Swept Wing Boundary Layer with Embedded Streamwise Vortex," European Journal of Mechanics B/Fluids, Vol.16, pp.465~482.
Boiko, A. V., 2002, "Receptivity of a Flat Plate Boundary Layer to a Free Stream Axial Vortex," European Journal of Mechanics B/Fluids, Vol.21, pp.325~340.
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