Persistent Link:
http://hdl.handle.net/10150/193453
Title:
MEAN FLOW AND TURBULENCE AROUND TWO SERIES OF EXPERIMENTAL DIKES
Author:
Yaeger, Mary A.
Issue Date:
2009
Publisher:
The University of Arizona.
Rights:
Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
Abstract:
Scour around various structures obstructing flow in an open channel is a common problem; therefore a better understanding of how turbulent flow affects sediment transport is needed. Additionally, is it the mean flow or the turbulence properties that are more important in contributing to bed shear stress? To this end, an experimental study was conducted in a fixed-bed flume containing a series of dikes. Turbulence intensities and Reynold's stresses were calculated from 3-D velocity measurements gathered with a microADV. Results showed that the maximum shear stress was nearly 12-20 times that of the approach flow, while maximum turbulence intensities were about 3-5 times those of the incoming flow. Highest magnitudes of both were seen at the tip of the second dike in the three-dike series. The mean velocity appeared to have no relation to the formation of scour near the tips of the dikes but the turbulence intensities did.
Type:
text; Electronic Thesis
Keywords:
Bed shear stress; Reynolds stress; Spur Dike; Turbulence
Degree Name:
M.S.
Degree Level:
masters
Degree Program:
Hydrology; Graduate College
Degree Grantor:
University of Arizona
Advisor:
Duan, Jennifer G.
Committee Chair:
Duan, Jennifer G.

Full metadata record

DC FieldValue Language
dc.language.isoENen_US
dc.titleMEAN FLOW AND TURBULENCE AROUND TWO SERIES OF EXPERIMENTAL DIKESen_US
dc.creatorYaeger, Mary A.en_US
dc.contributor.authorYaeger, Mary A.en_US
dc.date.issued2009en_US
dc.publisherThe University of Arizona.en_US
dc.rightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.en_US
dc.description.abstractScour around various structures obstructing flow in an open channel is a common problem; therefore a better understanding of how turbulent flow affects sediment transport is needed. Additionally, is it the mean flow or the turbulence properties that are more important in contributing to bed shear stress? To this end, an experimental study was conducted in a fixed-bed flume containing a series of dikes. Turbulence intensities and Reynold's stresses were calculated from 3-D velocity measurements gathered with a microADV. Results showed that the maximum shear stress was nearly 12-20 times that of the approach flow, while maximum turbulence intensities were about 3-5 times those of the incoming flow. Highest magnitudes of both were seen at the tip of the second dike in the three-dike series. The mean velocity appeared to have no relation to the formation of scour near the tips of the dikes but the turbulence intensities did.en_US
dc.typetexten_US
dc.typeElectronic Thesisen_US
dc.subjectBed shear stressen_US
dc.subjectReynolds stressen_US
dc.subjectSpur Dikeen_US
dc.subjectTurbulenceen_US
thesis.degree.nameM.S.en_US
thesis.degree.levelmastersen_US
thesis.degree.disciplineHydrologyen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.contributor.advisorDuan, Jennifer G.en_US
dc.contributor.chairDuan, Jennifer G.en_US
dc.contributor.committeememberTroch, Peteren_US
dc.contributor.committeememberMeixner, Thomasen_US
dc.contributor.committeememberLansey, Kevinen_US
dc.identifier.proquest10466en_US
dc.identifier.oclc659753408en_US
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