Streamwise energy-transfer mechanisms in zero- and adverse-pressure-gradient turbulent boundary layers

Abstract

The present study investigates streamwise (Farmula Presented) energy-transfer mechanisms in the inner and outer regions of turbulent boundary layers (TBLs). Particular focus is placed on the (Farmula Presented) production, its inter-component and wall-normal transport as well as dissipation, all of which become statistically significant in the outer region with increasing friction Reynolds number (Farmula Presented). These properties are analysed using published data sets of zero, weak and moderately strong adverse-pressure-gradient (APG) TBLs across a decade of, revealing similarity in energy-transfer pathways for all these TBLs. It is found that both the inner and outer peaks of (Farmula P..