Volumetric visualization of coherent structure in a low Reynolds number turbulent boundary layer

Montage 2: x-z data slices at y / = 0.74, y⁺ = 222

Flow is from bottom to top (x-direction) in the images, each of which measures: L_x / = 3.53, L_z / = 3.34 (in viscous units: L_x⁺ = 1054, L_z⁺ = 999). Time begins in the upper left hand corner, proceeds to the right, and continues on the next row (as if reading text). Note that structures appear to be connected in the vertical direction; vertically adjacent images are separated in time by 10 t which translates via the Taylor hypothesis to: U_e 10 t ~ 3.4 ~ L_x /