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Top and side views of dye visualization of wakes at varying Strouhal numbers, ReC = 640. (a) St = 0.23, (b) St = 0.43, (c) St = 0.64. These images appear in Buchholz & Smits (2005), reproduced with permission of AIP and the authors. A colour version of this figure may be found at http://gasdyn.princeton.edu.
