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Measurements of circulation and vorticity in the leading-edge vortexof a delta wing

1993; American Institute of Aeronautics and Astronautics; Volume: 31; Issue: 1 Linguagem: Inglês

10.2514/3.11325

1533-385X

Kenneth D. Visser, Robert C. Nelson,

Plasma and Flow Control in Aerodynamics

The present cross-wire measurements of the flowfield above a 75-deg flat-plate delta wing have yielded distributions of velocity, axial vorticity, and circulation which exhibit strongly conical behavior upstream of the breakdown region and away from the apex and trailing edge regions. The conical character of these properties is most pronounced over the central portion of the planform, away from the apex and trailing-edge regions. This behavior is further documented by the roughly linear increase in vortex strength with distance from the apex over the forward area of the wing.