Flow resistance developed by macro-roughness represented by pebbles positioned on a granular layer according to a regularly spaced stripe pattern on steep bed slopes is here investigated. Flume experiments under various geometrical and hydraulic conditions are carried out and interpreted by means of a theoretical model. Results indicate that when the macro-roughness stripes are spaced according to some optimal wavelength, flow resistance is maximum. A statistical analysis of a large number of step-pool geometry data suggests that this spacing corresponds to one of the statistically most frequent wavelength observed in natural step-pool sequences.

Flow resistance associated to a schematic step-pool pattern / F. Canovaro; L. Solari. - STAMPA. - (2006), pp. 1005-1011. (Intervento presentato al convegno River Flow 2006 Congress tenutosi a Lisbona ,Portogallo nel 6-8 settembre 2006).

Flow resistance associated to a schematic step-pool pattern

SOLARI, LUCA
2006

Abstract

Flow resistance developed by macro-roughness represented by pebbles positioned on a granular layer according to a regularly spaced stripe pattern on steep bed slopes is here investigated. Flume experiments under various geometrical and hydraulic conditions are carried out and interpreted by means of a theoretical model. Results indicate that when the macro-roughness stripes are spaced according to some optimal wavelength, flow resistance is maximum. A statistical analysis of a large number of step-pool geometry data suggests that this spacing corresponds to one of the statistically most frequent wavelength observed in natural step-pool sequences.
2006
River Flow 2006 Congress
Lisbona ,Portogallo
6-8 settembre 2006
F. Canovaro; L. Solari
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Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/349767
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