FLOW VELOCITY STRUCTURE AND TURBULENCE CHARACTERISTICS IN A PARTIALLY VEGETATED CHANNEL WITH RIGID EMERGENT VEGETATION

• DOI: 10.37572/EdArt_2908226756

• Palavras-chave: Turbulent flow; Vegetated corridor; Experimental study.

• Keywords: Turbulent flow; Vegetated corridor; Experimental study.

• Abstract:

  Research of hydrodynamics interactions between in-channel vegetation and the main channel is essential for researchers and hydraulic engineers to design, manage and rehabilitate river systems. This chapter intends to experimentally analyse how the hydrodynamic structures of the flow are affected by rigid emergent vegetation occupying a third of the channel width, with a steady flow rate and subcritical conditions. The hydrodynamic flow conditions in the flume are characterised by measurements of instantaneous velocities using 3D Acoustic Doppler Velocimetry, focusing on the obstructed-unobstructed interface area. Overall, the present research demonstrated that the turbulence characteristics are influenced by vegetation density and that these change in the measured depths.

• Número de páginas: 15