6533b82cfe1ef96bd128f2bb

RESEARCH PRODUCT

Experimental Observation Of Turbulent Structures In A Straight Flume

D. TerminiVincenzo Sammartano

subject

bed-formFlow turbulence structureSediment transportBoundary roughneOpen channel flowboundary roughnessSettore ICAR/01 - Idraulica

description

Experimental and theoretical studies of the structure of turbulence in open-channel flows have shown that the dynamics of the wall layer turbulence is dominated by the formation and growth of turbulent structures which evolve periodically as part of the so-called bursting phenomena. In the present paper experimental results obtained in a straight flume for different roughness conditions of the channel walls are described. The occurrence of turbulent events is verified by applying the conditioned quadrant analysis. The information about the spatial and temporal scales of the events is obtained through the space-time correlations of the conditioned data.

yearjournalcountryeditionlanguage
2010-01-01
http://hdl.handle.net/10447/239067