A practical geometrical comparison between free-repelled hydraulic jumps within inclined channels

Demetriou, J; Retsinis, E

dc.contributor.author	Demetriou, J	en
dc.contributor.author	Retsinis, E	en
dc.date.accessioned	2014-03-01T01:29:35Z
dc.date.available	2014-03-01T01:29:35Z
dc.date.issued	2009	en
dc.identifier.issn	1006-9321	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/19325
dc.subject	Free jumps	en
dc.subject	Inclined channels	en
dc.subject	Repelled jumps	en
dc.subject.classification	Engineering, Multidisciplinary	en
dc.subject.classification	Materials Science, Multidisciplinary	en
dc.subject.other	Behavioral changes	en
dc.subject.other	Expansion ratio	en
dc.subject.other	Experimental studies	en
dc.subject.other	Geometrical quantities	en
dc.subject.other	Hydraulic engineering	en
dc.subject.other	Non-prismatic	en
dc.subject.other	Open channels	en
dc.subject.other	Width ratio	en
dc.subject.other	Fluid mechanics	en
dc.subject.other	Shore protection	en
dc.subject.other	Hydraulic jump	en
dc.title	A practical geometrical comparison between free-repelled hydraulic jumps within inclined channels	en
heal.type	journalArticle	en
heal.identifier.primary	10.1007/s11431-009-0362-3	en
heal.identifier.secondary	http://dx.doi.org/10.1007/s11431-009-0362-3	en
heal.language	English	en
heal.publicationDate	2009	en
heal.abstract	In this experimental study a practical geometrical comparison between inclined (angle φ) free and repelled hydraulic jumps (the latter in non prismatic but abruptly expanding channels) is presented, analysed and discussed. For repelled hydraulic jumps a considerable parameter is the expansion ratio r (=channels' width ratio), which here is changing from r =0.5 to r =0.7. The comparison is made with the free jump (in prismatic channel, r =1), in the same ranges of angles φ (0° ≤ φ ≤ 8°) and Froude numbers (2≤Fr 1≤8). A practical arithmetic example is presented to show the behavioral change of conjugate depths, lengths L and depths at 0.5L, in order to receive a comparison among all pertinent geometrical quantities. The present results may be useful for the hydraulic engineering when designing open channels. © 2009 Science in China Press and Springer Berlin Heidelberg.	en
heal.publisher	SCIENCE PRESS	en
heal.journalName	Science in China, Series E: Technological Sciences	en
dc.identifier.doi	10.1007/s11431-009-0362-3	en
dc.identifier.isi	ISI:000271191400035	en
dc.identifier.volume	52	en
dc.identifier.issue	11	en
dc.identifier.spage	3363	en
dc.identifier.epage	3367	en