Separation Controlled Transonic Drag-rise Modification For V-shaped Notches
Experimental values of drag coefficients of V-shaped notches have been measured arid show an anomalous behavior in the transonic regime since they reach maximum values at slightly supersonic Mach numbers with moderate drag increases. This is shown to be caused by the inviscid-viscid interaction controlling flow separation and reattachment. Besides Mach number, the notch geometry and the boundary-layer thickness notch-length ratio were found to be of significance while Reynolds number effects were mild. Results of Schlieren photographs, pressure distribution measurements, and direct drag force measurements for a wide range of flow and geometrical variables are presented. © 1971, American Institute of Aeronautics and Astronautics, Inc., All rights reserved.
R. H. Howell and H. H. Korst, "Separation Controlled Transonic Drag-rise Modification For V-shaped Notches," AIAA Journal, vol. 9, no. 10, pp. 2051 - 2057, American Institute of Aeronautics and Astronautics, Jan 1971.
The definitive version is available at https://doi.org/10.2514/3.6460
Mechanical and Aerospace Engineering
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01 Jan 1971