Complex Network Analysis of Wind Tunnel Experiments on the Passive Scalar Dispersion in a Turbulent Boundary Layer

Large-to-small scale frequency modulation analysis in wall-bounded turbulence via visibility networks

“…The capability of visibility graphs to capture the temporal (or spatial) structure of a signal by means of a convexity-based geometrical framework, hence, turns out to be a key feature to study the occurrence in time (or space) of specific events (Iacobello et al 2018a(Iacobello et al , 2019a. In this work, we take advantage from the features of visibility networks to detect FM of the large scales on small scales.…”

“…Thanks to its simplicity of implementation, the NVG has been widely employed in a variety of research areas such as, among many others, economy, biomedicine and geophysics (Zou et al 2018). In particular, visibility-based investigations have been carried out in fluid mechanics to study jets and fires (Charakopoulos et al 2014;Murugesan, Zhu & Li 2019;Tokami et al 2020), wall-bounded turbulent flows (Liu, Zhou & Yuan 2010;Iacobello, Scarsoglio & Ridolfi 2018b), passive scalar plumes (Iacobello et al 2018a(Iacobello et al , 2019a and turbulent combustors (Murugesan & Sujith 2015Singh et al 2017).…”