Part of the book: Sediment Transport in Aquatic Environments
Many aquatic plants are often observed, and the submerged canopy flow appears in natural rivers. Complex flow patterns such as Karman vortex and related coherent motions are formed behind vegetation. In particular, mass and momentum transfers and the vertical mixing process are promoted significantly between the within‐canopy layer and over‐canopy layer. Therefore, it is very important for river ecosystem to reveal turbulent diffusion in submerged vegetated open‐channel flows. The present study conducted simultaneously PIV and laser‐induced fluorescence (LIF) measurements using a pair of high‐speed cameras to analyze the contribution of coherent vortex to the turbulent diffusion property.
Part of the book: River Basin Management