Energy dissipation on stepped spillways

Christodoulou George, C

dc.contributor.author	Christodoulou George, C	en
dc.date.accessioned	2014-03-01T01:09:24Z
dc.date.available	2014-03-01T01:09:24Z
dc.date.issued	1993	en
dc.identifier.issn	0733-9429	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/10952
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0027596057&partnerID=40&md5=862303183a90765f8e16c16a534f79d4	en
dc.subject.classification	Engineering, Civil	en
dc.subject.classification	Engineering, Mechanical	en
dc.subject.classification	Water Resources	en
dc.subject.other	Energy dissipation	en
dc.subject.other	Hydraulic structures	en
dc.subject.other	Inland waterways	en
dc.subject.other	Rivers	en
dc.subject.other	Stilling basins	en
dc.subject.other	Stepped overflow spillways	en
dc.subject.other	Stepped spillways	en
dc.subject.other	Spillways	en
dc.subject.other	Energy Dissipaters	en
dc.subject.other	Spillways	en
dc.subject.other	Stepped Design	en
dc.title	Energy dissipation on stepped spillways	en
heal.type	journalArticle	en
heal.language	English	en
heal.publicationDate	1993	en
heal.abstract	Potentially high energy dissipation on stepped overflow spillways would imply a significant reduction of the size of downstream stilling basins. The amount of energy loss on such spillways under skimming-flow conditions is examined experimentally for structures with a moderate number of steps and a width-to-height ratio equal to 0.7. The experimental results, supported by dimensional considerations, indicate that the most important parameters governing energy dissipation are the ratio of the critical depth of flow passing over the spillway to the step height y(c)/h, and the number of steps N. Dissipation is highest for the small values of y(c)/h tested, near unity, and decreases with increasing y(c)/h; for a certain y(c)/h the dissipation increases with N. The results are compared to those of earlier investigations referring to a large number of steps. For commonly used ranges of the step dimensions, a general relation is established between the energy loss and the parameter y(c)/h, which may be useful in practical applications.	en
heal.publisher	ASCE-AMER SOC CIVIL ENGINEERS	en
heal.journalName	Journal of Hydraulic Engineering	en
dc.identifier.isi	ISI:A1993KY57200006	en
dc.identifier.volume	119	en
dc.identifier.issue	5	en
dc.identifier.spage	644	en
dc.identifier.epage	650	en