(Article of periodic en Anglais - 1997)

Document title

The influence of roughness geometry and shields parameter on flow resistance in gravel-bed channels

Authors(s) and Affiliation(s)

(1) Dip. EITA, Settore Idraulica, Univ., Palermo, ITALIE


The spatial variability of bed particles of a gravel-bed channel is analysed and treated experimentally in order to simulate the effects of the arrangement of coarse bed elements on the flow resistance law. The differences between the experimental friction factor parameter values and the ones calculated by the proposed semi-logarithmic relationship are explained by the ratio between the Shields parameter and its critical value. The analysis shows that estimates of the friction factor parameter are not improved by introducing the Froude number into the flow resistance law


Article of periodic

published at : Earth surface processes and landforms / ISSN 0197-9337 / CODEN ESPLDB

Editor : Wiley, Chichester - ROYAUME-UNI (1981)

Millesime : 1997, vol. 22, no8 [pp. 759-772]

Bibliographic references : 44 ref.

Collation : Illustration ;



INIST-CNRS, Cote INIST : 17355

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 1997.
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