A Volumetric Approach to Wake Reduction: Design, Optimization, and Experimental Verification

Figure 1

(a) The system schematic illustrates the principal cross section of a spherical body with radius enclosed in an envelope of prescribed permeability of radius . (b) Permeability distribution related to one of the lowest wake values in the wake-drag manifold at the maximum drag of a solid sphere; envelope aspect ratio ( : ) is 5 : 1. (c) Flow field resulting from the permeability distribution in (b).

(a)

(b)

(c)