JEB -- Anderson and Grosenbaugh 208 (6): 1125 Figure IG6

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Fig. 6 .Velocity magnitude (A,C,E) and vorticity contour plots (B,D,F) showing the later development of three jets from the same adult L. pealei holding position at 25 cm s^-1. (A,B) An apparent chain of vortex-rings; (C,D) the typical jet breakdown into more or less coherent packets of vorticity; (E,F) the transition of unstable jet flow to turbulence. The magnitudes of vorticity contours are 2, 4, 6, 10, 15 and 20 rad s^-1. See explanation of contour identification in Fig. 2. (A,B) t=0.6 s, t/ ${Delta}$ t_j=2.0, (C,D) t=0.53 s, t/ ${Delta}$ t_j=1.6, and (E,F) t/ ${Delta}$ t_j>1.0.