Examination of a critical roughness height for outer layer similarity

By K. Flack, M. Schultz, Jonathan S. Connelly. 2007

235 citations recorded by the source corpus.

Subfields: Computational Mechanics, Global and Planetary Change, Mechanical Engineering

View Paper: https://www.semanticscholar.org/paper/60470cd8b57bbc13e2f300029dcd5f3017e3ed12

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In Computational Mechanics

In Global and Planetary Change

In Mechanical Engineering

Citations in the corpus

Direct numerical simulation of the turbulent boundary layer over a cube-roughened wall (2010, methodology): “Our DNS study of flow over a 3-D cube-roughened wall has demonstrated the lack of wall similarity in the outer layer, based on the criteria of Flack et al. (2007). Such a feature is consistent with the result for the 2-D rod-roughened wall and thus indicates that wall similarity in the outer layer i”
Effects of spanwise spacing on large-scale secondary flows in rough-wall turbulent boundary layers (2015, background): “It is typically assumed that the effects of roughness are confined to the roughness layer (Castro 2007; Flack et al. 2007; Amir & Castro 2011); however, recently it has been observed that large secondary motions in the mean flow can form naturally over rough surfaces and impact even the outer struct”
Turbulence structure in a boundary layer with two-dimensional roughness (2009, background): “Mesh and sandgrain roughness produced similar results in Flack et al. (2007), suggesting that the shape of the three-dimensional roughness elements also does not play a significant role.”
Turbulence Structure in Rough and Smooth Wall Boundary Layers (2006, background): “The difference may be due to a higher inclination angle of the vortices farther from the wall, as noted by Ganapathisubramani et al. (2006). Two-point correlations of the signed swirl strength, Rλλ, in the (x, z)-plane are shown in figure 21 along with streamwise and spanwise slices through the self”