와류 생성기를 이용한 수직벽 후류 제어의 실험적 연구 = Experimental Study of Manipulating the Vertical Fence Wake using the Vortex Generator

다국어 초록 (Multilingual 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 flow 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.

참고문헌 (Reference)

1 Durst, F., "Turbulent flow over two-dimensional fence. Turbulent shear Flow 2 (Bradbury et al., editors)" Springer Verlag 1979

2 De Brederode, V. A. S. L., "Three-dimensional flow in nominally two-dimensional separation flow" Imperial College, London University 1975

3 Good, M. C, "The form drag of two-dimensional bluff-plates immersed in turbulent boundary layers" 31 : 547-582, 1968

4 Kim, H. B., "Pulsating jet control for manipulating the separation bubble behind the fence" 2009

5 Gad-el-Hak. M., "Flow Control : Passive, Active, and Reactive Flow Management" Cambridge 2006

6 Godard. G, "Control of a decelerating boundary layer. Part 1 : Optimization of passive vortex generators" 3 : 181-191, 2006

7 Chun, K. B, "Control of Turbulent Separated Flow over a Backward-facing Step by Local Forcing" 21 : 417-426, 1996

8 Castro, I. P, "A note on two-dimensional fence flows, with emphasis on wall constraints" 3 : 1-20, 1978