Reduction of bend scour by an outer bank footing: Flow field and turbulence
Reduction of bend scour by an outer bank footing: Flow field and turbulence.
Roca, M.and Blanckaert, K. and Martín-Vide, J.P.
Journal of Hydraulic Engineering ASCE, 135 (5). pp. 361-368. (2009)
Full text not available from this repository.
|Abstract:||River bank protection is a costly but essential component in river management. Outer banks in river bends are most vulnerable to scour and erosion. Previous laboratory experiments illustrated that a well-designed horizontal foundation of a vertical outer bank protruding into the cross section, called a footing, can reduce the scour depth and thereby protect the bank. This paper provides detailed experimental data in a reference experiment without footing and an experiment with footing carried out under similar hydraulic conditions, which suggest a delicate interaction between bed topography, downstream and cross-stream velocity, and to lesser extent turbulence. The presence of the outer bank footing modifies this delicate interaction and results in a more favorable configuration with respect to bank stability including: reduced maximum scour depth, more uniformly distributed downstream velocity, and weaker cross-stream circulation cells. |
|Subjects:||Floods > River management|
Floods > General
Coasts > Sediment transport and scour
Water > General
|Deposited On:||16 Sep 2009 11:01|
|Last Modified:||11 Aug 2014 07:27|
Repository Staff Only: item control page