AIAA022968 ANALYSIS OF DELTA WING VORTICAL SUBSTRUCTURES USING DETACHEDEDDY SIMULATION

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AIAA-02-2968ANALYSIS OF DELTA WING VORTICAL
SUBSTRUCTURES USING DETACHED-EDDY SIMULATION

• Anthony Mitchell, Scott Morton and Jim Forsythe
• Department of Aeronautics, United States Air
  Force Academy
• Colorado Springs, Colorado, USA

25 June 2002, St. Louis, MO
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Why study delta wings and vortical flows?

• Delta wing design has significant advantage in
  lift forces at high angles of attack when
  compared with other designs
• Several vortical structures form on the leeward
  surface of a delta wing at moderate to high
  angles of attack, producing 30-50 of the total
  lift

• Leading-edge vortices are
• generated by the rolling up of the viscous flow
  sheet previously confined in the boundary layer
• Extreme flight conditions result in
• complicated 3-D separated flows

Délery
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Spatially stationary substructures
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Adaptive Mesh Refinement DES Solutions