Print Email Facebook Twitter Informal Monograph on Riverine Sand Dunes Title Informal Monograph on Riverine Sand Dunes Author Kennedy, J.F. Odgaard, A.J. Date 1991-10-01 Abstract This report presents an investigation of riverine sand dunes and includes an extensive literature review on the subject. It was concluded that the principal mechanisms responsible for river bed instability, which results in the production of ripples, dunes, etc., are fairly well understood. However, several of the key constituent processes are not well formulated. Principal among these are the phase shifts that occur between the local sediment discharge, the local near-bed velocity, local bed-profile displacement, and local bed shear stress. The reasons for the current deficiencies in the theoretical models are discussed and are concluded to stem from the difficulties inherent to analysis of nonuniform, turbulent, boundary-layer-type flows. Several existing theories for prediction of dune height were verified. None of the five published predictors evaluated was found to be satisfactory. A new, "inverse" model for prediction of dune height was developed. Subject sand dunesriver bed instabilitydune height predictionliterature review Classification TPN100300TPG1900 To reference this document use: http://resolver.tudelft.nl/uuid:3aee8600-891b-491e-a778-314fb4465b35 Publisher USACE Source The University of Iowa Part of collection Hydraulic Engineering Reports Document type report Rights (c) 1991 USACE Files PDF Kennedy_Odgaard1991.pdf 31.02 MB Close viewer /islandora/object/uuid:3aee8600-891b-491e-a778-314fb4465b35/datastream/OBJ/view