Large- and Very Large-scale Structures - Transport and Coherent Structures in Wall Turbulence - page 396

structures is a well-established fact, but the real mechanism
is complex, and certainly not unique [WAR 91, ADR 00,
TOM 03, LEE 11].

Figure 6.18. Three possible scenarios for the merging of structures in the
spanwise direction, according to [TOM 03]. This figure is reproduced from
[TOM 03]. Also see Figure 6.11. For a color version of this figure, see
www.iste.co.uk/tardu/wallturbulence.zip

by the large- and very large-scale
motions becomes significant from moderate values of the
Reynolds number

The transport of uv −

onward. Del Alamo et al.
[ALA 04] performed DNS in a channel at

3

Re τ ≈ 10

, first in Re

τ =

950