Incipient hydraulic jump at channel junctions

Christodoulou George, C

dc.contributor.author	Christodoulou George, C	en
dc.date.accessioned	2014-03-01T01:41:49Z
dc.date.available	2014-03-01T01:41:49Z
dc.date.issued	1993	en
dc.identifier.issn	07339429	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/23655
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0027561535&partnerID=40&md5=46c33818804b4626b922ca497569c1d6	en
dc.subject.other	Channel flow	en
dc.subject.other	Discharge (fluid mechanics)	en
dc.subject.other	Flow measurement	en
dc.subject.other	Mathematical models	en
dc.subject.other	Water levels	en
dc.subject.other	Approaching flow conditions	en
dc.subject.other	Confluence	en
dc.subject.other	Froude numbers	en
dc.subject.other	Junction geometry	en
dc.subject.other	Nondimensional diagrams	en
dc.subject.other	Subcritical tributary flow	en
dc.subject.other	Supercritical flow	en
dc.subject.other	Width ratio	en
dc.subject.other	Hydraulic jump	en
dc.subject.other	Hydraulic Jumps	en
dc.subject.other	Junctions	en
dc.subject.other	Open Channels	en
dc.title	Incipient hydraulic jump at channel junctions	en
heal.type	journalArticle	en
heal.publicationDate	1993	en
heal.abstract	The conditions for hydraulic jump formation at the confluence to a supercritical flow are examined theoretically. One-dimensional analysis for rectangular channels leads to approximate criteria for the channels discharge ratio in terms of the junction geometry and approaching flow conditions. The effect of the main factors, notably the Froude numbers and channels' width ratio, is determined. Experiments are carried out for junctions at a 90° and a 17° angle of a subcritical tributary flow to a weakly supercritical main flow with F1 = 1.5-2.0. The results of this study and other available experimental results covering a wider range of Froude numbers compare favorably to the theoretical predictions. The behavior of the water level at the end of the lateral channel is also presented in nondimensional diagrams.	en
heal.journalName	Journal of Hydraulic Engineering	en
dc.identifier.volume	119	en
dc.identifier.issue	3	en
dc.identifier.spage	409	en
dc.identifier.epage	421	en