Fig. 9
Influence of asymmetric screw vortex on the configuration of the gradient lattice. Left: Examples of basic gradient flows that are fully symmetric (a), and bilaterally asymmetric with a central sheet (b), and fully laminar (c). Right: a screw with a symmetric axis (sub-layers in red) presents smaller bilateral asymmetry than the blue screw pattern identified in the simulation (Fig. 8). The distance (r) and the rotation angle (\(\Theta\)) from the blue axis can be conjectured here as one of the causes driving the values of the phase-gradient (\(G_{\phi }\)) determining the complex oscillation regimes found in our results (Fig. 6).
