Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 541664
Title Experimental investigation of low-angle dune morphodynamics
Author(s) Naqshband, Suleyman; Wullems, Bas; Ruijsscher, Timo de; Hoitink, Ton
Source In: River Flow 2018 - Ninth International Conference on Fluvial Hydraulics. - EDP Sciences (E3S Web of Conferences ) - 5 p.
Event 9th International Conference on Fluvial Hydraulics, River Flow 2018, Lyon-Villeurbanne, 2018-09-05/2018-09-08
DOI https://doi.org/10.1051/e3sconf/20184002056
Department(s) Hydrology and Quantitative Water Management
WIMEK
Publication type Contribution in proceedings
Publication year 2018
Abstract

Dunes commonly dominate the bed of sandy rivers and they are of central importance in predicting flow resistance and water levels. In the present study, we show that by using light-weight polystyrene particles as substrate in a laboratory setting, promising morphodynamic similarity is obtained between dunes in shallow flow (flume) and deep flow (field) conditions. In particular, results from our flume experiments show that dune lee-side angles, which are crucial in turbulence production and energy dissipation, better approximate dune lee-side angles observed in natural channels. Furthermore, dune height evolution towards upper stage plane bed observed in the present experimental study, closely follows dune height evolution as observed in world's large rivers.

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