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

Montage 1: x-z data slices at y / = 0.37, y⁺ = 111

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 the strong spanwise deformation of the bright streamwise streaks.