Browse > Article
http://dx.doi.org/10.5407/JKSV.2010.7.2.012

Experimental Study of Manipulating the Vertical Fence Wake using the Vortex Generator  

Lee, Sang-Hyuk (한국원자력연구원 고속로 기술개발부)
Kang, In-Su (경상대학교 기계항공공학부원)
Cha, Jae-Eun (한국원자력연구원 고속로 기술개발부)
Kim, Hyoung-Bum (경상대학교 항공기부품기술연구소)
Publication Information
Journal of the Korean Society of Visualization / v.7, no.2, 2010 , pp. 12-16 More about this Journal
Abstract
The effect of vortex generators to manipulate the separated flow region behind the vertical fence was experimentally investigated. The experiments were performed in the circulating water channel. The parameters used in this study were the distance between the fence and vortex generators and size of vortex generators. Digital PIV method was applied to measure the instantaneous velocity fields around the fence. And the obtained flow properties were compared with those of fence How without the vortex generators. The obtained results quantitatively shows the specific size and distance of vortex generators which were effective to reduce the mean reattachment length of separation bubble behind the fence.
Keywords
Vertical fence wake; Separation bubble; Vortex generator; Passive control;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Good, M. C. and Joubert, P. N., 1968, "The form drag of two-dimensional bluff-plates immersed in turbulent boundary layers", J. Fluid Mech, Vol. 31, pp. 547-582.   DOI
2 Castro, I. P. and Fackrell, J. E., 1978, "A note on two-dimensional fence flows, with emphasis on wall constraints", J. I. Aerodynamics, Vol. 3, pp. 1-20.   DOI
3 Gad-el-Hak. M., 2006, "Flow Control : Passive, Active, and Reactive Flow Management", Cambridge, New York.
4 Chun, K. B. and Sung, H. J., 1996, "Control of Turbulent Separated Flow over a Backward-facing Step by Local Forcing", Exp. in Fluids, Vol. 21, pp. 417-426.   DOI
5 Godard. G. and Stanislas. M., 2006, "Control of a decelerating boundary layer. Part 1 : Optimization of passive vortex generators", Aerospace Science and Technology, Vol. 3 pp. 181-191.
6 Kim, H. B. and Choi, Y. H., 2009, "Pulsating jet control for manipulating the separation bubble behind the fence", J. Visulization, Accepted.
7 De Brederode, V. A. S. L., 1975, "Three-dimensional flow in nominally two-dimensional separation flow", Ph. D thesis, Imperial College, London University.
8 Durst, F. and Rastogi, A. K., 1979, "Turbulent flow over two-dimensional fence. Turbulent shear Flow 2 (Bradbury et al., editors)", Berlin, Springer Verlag.