Linear stability analysis of a 1-D model with dynamical description of bed-load transport

In the paper a linear stability analysis of a one-dimensional morphodynamical model is presented. The local equilibrium assumption on the solid discharge is removed and a dynamical description of the bed-load transport is employed. Both unsteady and quasi-steady flow models are analysed and discusse...

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Bibliographic Details
Published inJournal of hydraulic research Vol. 44; no. 4; pp. 480 - 487
Main Authors Di Cristo, C., Iervolino, M., Vacca, A.
Format Journal Article
LanguageEnglish
Published Delft Taylor & Francis Group 01.01.2006
International Association for Hydraulic Research
Subjects
bed-forms
bed-load transport
Earth sciences
Earth, ocean, space
Exact sciences and technology
Hydrology. Hydrogeology
One-dimensional model
stability analysis
bed-forms
models
stability analysis
transport
bed-load transport
One-dimensional model
landform evolution
stability
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Summary:In the paper a linear stability analysis of a one-dimensional morphodynamical model is presented. The local equilibrium assumption on the solid discharge is removed and a dynamical description of the bed-load transport is employed. Both unsteady and quasi-steady flow models are analysed and discussed. The results reveal the existence, at moderate Froude number values, of perturbations related to bed elevation instability, migrating in the upstream direction both in quasi-steady and full unsteady models.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0022-1686
1814-2079
DOI:10.1080/00221686.2006.9521699