Experiments Identifying Scour-Inducing Flow Patterns at a Gated Weir Stilling Basin

Autor:	Larry Deaton, Santosh R. Ghimire, Ted M. Champagne, Brian D. Barkdoll, Juan A. González-Castrom
Rok vydání:	2010
Předmět:	Hydrology Geography Physical model Flow velocity Weir Flow (psychology) Ingenieurwissenschaften (620) Geotechnical engineering Acoustic Doppler velocimetry Tailwater Flow measurement Volumetric flow rate
Zdroj:	Scour and Erosion.
DOI:	10.1061/41147(392)66
Popis:	Excessive scour downstream of stilling basins poses significant risk of structural failure. This problem was experimentally investigated at Michigan Technological University in a Froude-scaled, physical model of one such structure operated by the South Florida Water Management District. Detailed flow measurements were taken on a flow scenario that resulted in high scour, namely that of a high flow rate and upstream headwater depth and a low tailwater depth. Equilibrium bed scour and velocity measurements were taken using an Acoustic Doppler Velocimeter. Velocity data was used to construct a vector plot in order to identify which flow components contribute to the scour hole. It was found that downward-plunging flow upon leaving the stilling basin induces the primary scour hole.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9c10930243127d849c38aeba55cdddc2 https://doi.org/10.1061/41147(392)66 Zobrazit plný text záznamu