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Application of conformal sub boundary layer vortex generators to a foil of aero / hydrodynamic surface
Application of conformal sub boundary layer vortex generators to a foil of aero / hydrodynamic surface
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机译:共形子边界层涡流发生器在空气/流体动力学表面箔上的应用
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摘要
A method of improving aerodynamic performance of foils by the application of conformal, low drag vortex generators. A film of erosion protection material or other conformal material is placed on the foil to provide a medium for the incorporation of planform edge vortex generators. The form edge is shaped to achieve submerged vortex generating shapes of chevron or ogival planforms, extending primarily chordwise on the foil surface. The vortex generators promote improved boundary layer dynamics by mixing free stream flow into the boundary layer while minimising separation and fluid losses. At the trailing edge, the shape formed with the chevrons applied apex forward, acts as a vented gurney tab series and additionally as disruptors to the Von Karman Street wake, delaying sheet rollup into the tip vortice.
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