On Flow-Altering Countermeasures for Scour at Vertical-Wall Abutment

• Autorzy: Radice A. , Lauva O.

Identyfikatory

DOI

10.2478/heem-2013-0008-y

• Języki publikacji: EN

Abstrakty

EN

Results are presented for clear-water scour experiments at a vertical-wall abutment where the obstacle was modified with slots or roughening elements as flow-altering countermeasures against the erosion process. The laboratory campaign comprehended an initial experiment with an unprotected obstacle, two experiments with slots above and beneath the non-scoured bed level, respectively, and one experiment with a roughened abutment. The repeatability of the experiments was checked and found satisfactory. The measured data set consisted of (i) scour depth with time; (ii) geometry of the erosion hole; and (iii) sediment motion pattern at several evolution stages of the process. A novel feature of the work was the attempt to combine evidence on the scour depth and that on sediment motion so as to shed light on the mechanism of scour reduction by the countermeasures tested. It is argued that this strategy might furnish guidelines for future extensive investigations of scour countermeasures, aimed at finding optimal design solutions.

Słowa kluczowe

EN

local scour; abutment; process dynamics; flow-altering countermeasures; sediment transport

• Wydawca: Institute of Hydro-Engineering of Polish Academy of Sciences
• Czasopismo: Archives of Hydro-Engineering and Environmental Mechanics
• Rocznik: 2012
• Tom: Vol. 59, nr 3-4
• Strony: 137--153
• Opis fizyczny: Bibliogr. 33 poz., il.

Twórcy

autor

Radice A.

autor

Lauva O.

• Dept. I.I.A.R., Politecnico di Milano, Piazza Leonardo da Vinci, 32, 20133 Milano, Italy,

Bibliografia

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