Abstract:
The present study aims at understanding the changes in the
channel conveyance and in the turbulent flow structure due to the presence
of both submerged vegetation in the floodplains and riparian vegetation. An
experimental campaign was carried out comprising uniform compound
channels flows (i) without any kind of vegetation, (ii) with synthetic grass
in the floodplains, (iii) with synthetic grass in the floodplains and rods in the
interface between main channel and the floodplain and (iv) with synthetic
grass in the floodplains and artificial shrubs in the interface between main
channel and the floodplain. For comparison, the water depth in all flow cases
was kept constant. Accurate acoustic Doppler velocimetry was used to
evaluate the 3d velocity field and the turbulence structures characteristics.
