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dc.contributor.authorBernard, Robert S.-
dc.contributor.authorSchneider, Michael L. (Michael Lee)-
dc.descriptionTechnical Report-
dc.descriptionAbstract: Without some correction for the interaction between lateral curvature and vertically nonuniform velocity, depth-averaged numerical models cannot predict the gradual migration of high velocity toward the outside of channel bends. Conventional depth-averaging does not account for the curvature-induced secondary flow that gives rise to the migration. To remedy this deficiency, a secondary flow correction (SFC) has been developed and incorporated in the two-dimensional STREMR code. The secondary governing equation contains two empirical coefficients, and these have been adjusted to make STREMR predictions agree with observed velocity profiles for a single 270-deg bend. Without further adjustment, the SFC yields comparable accuracy for multiple-bend predictions in two other channels with depth, curvature, and bottom friction different from the 270-deg case. This suggests that the SFC may be useful in general for bendways with small curvature, gentle side slope, and moderate bottom friction.-
dc.publisherHydraulics Laboratory (U.S.)-
dc.publisherEngineer Research and Development Center (U.S.)-
dc.relation.ispartofseriesTechnical report (U.S. Army Engineer Waterways Experiment Station) ; HL-92-9.-
dc.rightsApproved for public release; distribution is unlimited.-
dc.sourceThis Digital Resource was created from scans of the Print Resource-
dc.subjectNumerical model-
dc.subjectOpen channel-
dc.subjectSecondary flow-
dc.subjectVelocity distribution-
dc.subjectMathematical models-
dc.subjectSecondary flow correction-
dc.subjectSTREMR (computer program)-
dc.titleDepth-averaged numerical modeling for curved channels-
Appears in Collections:Technical Report

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