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Energy-efficient flow control around blunt bodies

  • Yurchenko, Nina F. (Department of Thermal & Fluid Dynamic Modeling, Institute of Hydromechanics, National Academy of Sciences of Ukraine)
  • Received : 2013.07.11
  • Accepted : 2013.09.27
  • Published : 2014.01.31
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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.

Keywords

References

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