Interscale transport mechanisms in turbulent boundary layers
C Chan, P Schlatter, RC Chin
JOURNAL OF FLUID MECHANICS | CAMBRIDGE UNIV PRESS | Published : 2021
The flow physics of turbulent boundary layers is investigated using spectral analysis based on the spanwise scale decomposition of the Reynolds stress transport equation, with data obtained from a direct numerical simulation of the turbulent boundary layer at. Here, we extend the framework of Kawata & Alfredsson (Phys. Rev. Lett., vol. 120, 2018, p. 244501) for plane Couette flows to zero-pressure-gradient boundary layers. The equation contains three fundamental fluxes, which govern the Reynolds stress transport: (i) a scale flux of the interaction between small-scale and large-scale structures, and two spatial fluxes dominated by (ii) pressure and (iii) turbulent transport along the wall-no..View full abstract
Funds provided by the Australian Research Council are gratefully acknowledged.