Abstract
Recent research into the structure of turbulent boundary layers has revealed organized vortical structures which control the dissipation of energy within turbulent flows, the generation and magnitude of the shear velocity and shear stress and consequently the entrainment of sediment. However, the significant feedbacks of grain and form roughness and the influence of mobile sediment on the flow may greatly modify the turbulent boundary layer structure and introduce many new complexities when considering the entrainment of sediment. This chapter briefly reviews recent work on the structure of turbulent boundary layers and discusses this research in the context of sediment entrainment, 'bursting' within geophysical flows and the nature and significance of drag reduction. (Author)
| Original language | English (US) |
|---|---|
| Title of host publication | Turbulence: Perspectives On Flow and Sediment Transfer |
| Editors | N J Clifford, J R French, J Hardisty |
| Publisher | John Wiley & Sons, Ltd. |
| Pages | 61-92 |
| Number of pages | 32 |
| State | Published - 1993 |
| Externally published | Yes |
ASJC Scopus subject areas
- General Environmental Science
- General Earth and Planetary Sciences