Scale-by-scale budget equation and its self-preservation in the shear-layer of a free round jet

Examining the inertial subrange with nanoscale cross-wire measurements of turbulent pipe flow at high Reynolds number near the centreline

“…When measuring off the centreline of a symmetric flow (such as a channel, pipe or jet), additional terms will arise such as shear-stress production or pressure fluctuations that influence the balance. This was shown by Sadeghi, Lavoie & Pollard (2016) in a round jet off centreline, where inclusion of five additional integral terms was necessary for the third-order moment equation. It is therefore essential to consider and derive what potential contributions are necessary to include in the generalization of (1.1) in a pipe flow along the centreline.…”

Spatially evolving cascades in temporal planar jets

“…(2012) for turbulent channel flows, Mollicone et al. (2018) for separated flows, Rincon (2006), Togni, Cimarelli & De Angelis (2015, 2019) for thermally driven turbulence, Gomes-Fernandes, Ganapathisubramani & Vassilicos (2015); Portela, Papadakis & Vassilicos (2017) for turbulent wakes and Burattini, Antonia & Danaila (2005), Sadeghi, Lavoie & Pollard (2016) for round jets. Here, we extend the use of the generalized Kolmogorov equation to the symmetries of a turbulent planar temporal jet.…”