[45] The linear norm of residuals is < 0.01 over the range of mixing units tested, indicating expo- nential scaling is a close approximation of mixing behavior here. 

[46] Naively considering the sheaves of flow lines suggests that the total distance an average particle travels as it moves downstream in a corrugated channel will be larger than the minimum distance (e.g. channel length); fluid off center will effectively “see” a longer channel and thus experience more diffusion, and one should expect enhanced overall diffusion in a given length relative to the centerline flow. 

