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.I documenti in FLORE sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.