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dc.contributorHinkelmann, Reinhard
dc.contributorNasermoaddeli, Mohammad Hassan
dc.contributorLiong, Yui
dc.contributorSavić, Dragan
dc.contributorFröhle, Peter
dc.contributorDaemrich, Karl-Friedrich
dc.creatorĐorđević, Dejana
dc.date.accessioned2021-03-04T11:00:30Z
dc.date.available2021-03-04T11:00:30Z
dc.date.issued2012
dc.identifier.isbn978-3-941492-45-5
dc.identifier.urihttps://grafar.grf.bg.ac.rs/handle/123456789/2285
dc.description.abstractThe paper aims at studying the effect of difference in bed elevations between the tributary and main canals (∆zT) on the flow in the confluence hydrodynamics zone. To do this, a 3D numerical model is used for flow simulation at 90 confluences with four different values of the ∆zT/h ratio (where h is the water depth in the main canal at the confluence). The values are in the range [0.0, 0.5]. The ∆zT /h = 0.00 case corresponds to the concordant beds confluence, and the value of 0.50 is the common value in field confluences. Special attention is paid to the flow deflection and recirculation zones. It is found that: 1) the vertical velocity component attains the same order of magnitude as the horizontal velocity with the increasing ∆zT , 2) the enhanced 3D flow close to the side-wall shifts the recirculation zone away from the wall to the boundary streamline, thus changing the recirculation zone orientation whose axis becomes inclined at an angle to the wall, 3) the size of the zone is reduced and 4) the structure of the zone is completely destroyed close to the free surface, where the core of the w_max is located.sr
dc.language.isoensr
dc.publisherTuTech Verlag, TuTech Innovation GmbHsr
dc.relationinfo:eu-repo/grantAgreement/MESTD/MPN2006-2010/22011/RS//sr
dc.relationinfo:eu-repo/grantAgreement/MESTD/MPN2006-2010/22017/RS//sr
dc.rightsrestrictedAccesssr
dc.sourceProceedings of 10th International Conference on Hydroinformaticssr
dc.subject3D numerical modelsr
dc.subjectriver confluencesr
dc.subjectbed elevation discordance ratiosr
dc.subjectjunction angle 90osr
dc.subjectrecirculation zonesr
dc.subjectflow deflectionsr
dc.titleNumerical simulation of 3D flow at 90o straight-channel confluence with bed elevation discordancesr
dc.typeconferenceObjectsr
dc.rights.licenseARRsr
dc.rights.holderTuTech Innovation GmbHsr
dc.type.versionpublishedVersionsr


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