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Advances in Aircraft and Spacecraft Science Volume 1, Number 1, January 2014 , pages 15-25 DOI: https://doi.org/10.12989/aas.2014.1.1.015 |
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Energy-efficient flow control around blunt bodies |
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Nina F. Yurchenko
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| Abstract | ||
| The developed concept of smart flow control based on turbulence scale modification was applied to control a flow around a circular cylinder. The concept was realized using arrays of vortex-generators regularly spaced along a cylinder generatrix with a given step. Mechanical and thermal vortex-generators were tested, the latter having been based on the localized surface heating or plasma discharges initiated with microwave radiation near the surface. Thus depending on a particular engineering solution, flow transport properties could be modified in passive or active ways. Matched numerical and experimental investigations showed a possibility to delay flow separation and, accordingly, to improve the aerodynamic performance of blunt bodies. | ||
| Key Words | ||
| scaled vortices; thermal riblets; aerodynamic performance; multidisciplinary investigations | ||
| Address | ||
| Nina F. Yurchenko: Department of Thermal & Fluid Dynamic Modeling, Institute of Hydromechanics, National Academy of Sciences of Ukraine, 8/4 Zheliabov St, Kiev 03680, Ukraine | ||
