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Methodology for calculating shear stress in a meandering channel

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dc.contributor.authorSin, Kyung-Seop, author
dc.contributor.authorThornton, Christopher I., advisor
dc.contributor.authorJulien, Pierre Y., committee member
dc.contributor.authorWohl, Ellen E., 1962-, committee member
dc.date.accessioned2007-01-03T04:52:02Z
dc.date.available2007-01-03T04:52:02Z
dc.date.issued2010
dc.description.abstractShear stress in meandering channels is the key parameter to predict bank erosion and bend migration. A representative study reach of the Rio Grande River in central New Mexico has been modeled in the Hydraulics Laboratory at CSU. To determine the shear stress distribution in a meandering channel, the large scale (1:12) physical modeling study was conducted in the following phases: 1) model construction 2) data collection 3) data analysis, and 4) conclusion and technical recommendations. Data of flow depth, flow velocity in three velocity components (Vx, Vy and Vz) and bed shear stress using a Preston tube were collected in the laboratory. According to the laboratory data analysis, shear stress from a Preston tube is the most appropriate shear stress calculation method. In case of the Preston tube, data collection was performed directly on the surface of the channel. Other shear stress calculation methods were based on ADV (Acoustic Doppler Velocity) data that were not collected directly on the bed surface. Therefore, the shear stress determined from ADV measurements was underestimated. Additionally, Kb (the ratio of maximum shear stress to average shear stress) plots were generated. Finally, the envelope equation for Kb from the Preston tube measurements was selected as the most appropriate equation to design meandering channels.
dc.format.mediumborn digital
dc.format.mediummasters theses
dc.identifierSIN_colostate_0053N_10154.pdf
dc.identifier.urihttp://hdl.handle.net/10217/44952
dc.languageEnglish
dc.language.isoeng
dc.publisherColorado State University. Libraries
dc.relation.ispartof2000-2019
dc.rightsCopyright and other restrictions may apply. User is responsible for compliance with all applicable laws. For information about copyright law, please see https://libguides.colostate.edu/copyright.
dc.subjectshear stress
dc.subjectRozovskii
dc.subjectReynolds Shear
dc.subjectPreston tube
dc.subjectmeandering channel
dc.subjectADV
dc.subjectShear strength of soils -- Testing
dc.subjectRiver channels
dc.subjectErosion
dc.titleMethodology for calculating shear stress in a meandering channel
dc.typeText
dcterms.rights.dplaThis Item is protected by copyright and/or related rights (https://rightsstatements.org/vocab/InC/1.0/). You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s).
thesis.degree.disciplineCivil and Environmental Engineering
thesis.degree.grantorColorado State University
thesis.degree.levelMasters
thesis.degree.nameMaster of Science (M.S.)

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