Despite the large studies on flow in partly vegetated open channels, this issue remains of fundamental importance to better understand the deeprelationship between the flow behaviour and the vegetation structure. This study presents new observations on the boundary layer development, the turbulence structures and the flow momentum exchange at the interface between flow and vegetation. A large series of experiments was carried out in a physical model of a very large rectangular channel with presence of array of vertical, rigid, circular and rough steel cylinders. The array of cylinders waspartially mounted on the bottom of the channel, in the central part, leaving two lateral areas of free flow circulation near the walls. The three-dimensional flow velocity components were measured using a 3D Acoustic Doppler Velocimeter ADV.
Development of lateral boundary layer and turbulent flow structures at channel-vegetation interfaces / Ben Meftah, Mouldi; De Serio, Francesca; Mossa, Michele; Petrillo, Antonio Felice - In: The wise find pleasure in water: meandering through water science and engineering : proceedings of the 35th IAHR World Congress : September 8-13, Chengdu, China / [a cura di] International Association of Hydraulic Engineering and Research, IAHR. - CD-ROM. - Beijing, China : Tsinghua University Press, 2013. - ISBN 978-7-89414-588-8.
Development of lateral boundary layer and turbulent flow structures at channel-vegetation interfaces
Mouldi Ben Meftah;Francesca De Serio;Michele Mossa;Antonio Felice Petrillo
2013-01-01
Abstract
Despite the large studies on flow in partly vegetated open channels, this issue remains of fundamental importance to better understand the deeprelationship between the flow behaviour and the vegetation structure. This study presents new observations on the boundary layer development, the turbulence structures and the flow momentum exchange at the interface between flow and vegetation. A large series of experiments was carried out in a physical model of a very large rectangular channel with presence of array of vertical, rigid, circular and rough steel cylinders. The array of cylinders waspartially mounted on the bottom of the channel, in the central part, leaving two lateral areas of free flow circulation near the walls. The three-dimensional flow velocity components were measured using a 3D Acoustic Doppler Velocimeter ADV.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
