Experimental Characterization of Micro Vortex Generators in Low Speed Flows

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2021-09-08

Author

Akpolat, Tuğrul
Abdulrahim, Anas
Hassanein, Abdelrahman
Uzol, Oğuz
Perçin, Mustafa

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In this study, we present the experimental results of the characterization of micro-ramp type Micro Vortex Generators (MVGs) in low-speed flows. The undisturbed boundary layer profile was measured by means of Hot-Wire Anemometry. Two MVGs with the same design but different height-to-boundary layer thickness ratios are used in this study. Two-dimensional twocomponent particle image velocimetry measurements are conducted in the wake of the MVGs. The results reveal the lift-off of the wake away from the wall further downstream, which is an indication of the streamwise counter-rotating vortex pair induced by the MVGs. In addition, it was observed that with the MVG having a larger height-to-boundary layer thickness ratio, a wake having a higher wall-normal velocity distribution with a slower upwash motion recovery is induced. This is attributed to the stronger counter-rotating vortex pair produced by the larger MVG. Finally, a wake scaling procedure is applied in order to assess the self-similarity of the wake velocity profiles.

URI

https://hdl.handle.net/11511/99621

Conference Name

11th Ankara International Aerospace Conference

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Department of Aerospace Engineering, Conference / Seminar

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Citation Formats

T. Akpolat, A. Abdulrahim, A. Hassanein, O. Uzol, and M. Perçin, “Experimental Characterization of Micro Vortex Generators in Low Speed Flows,” presented at the 11th Ankara International Aerospace Conference, 2021, Accessed: 00, 2022. [Online]. Available: https://hdl.handle.net/11511/99621.