Abstract
To better understand turbulent reattachment downstream of canopy edges we conducted analysis of velocity and visual data from flume experiments. We find that the mean flow and turbulence statistics suggests the presence of both canopy shear and backward facing step (BFS) dynamics. Depending on the canopy characteristics, the dominance of either dynamics varies spatially within the wake. In regions dominated by canopy-shear turbulence, the separation induced by the canopy edge (BFS dynamics) modifies the canopy signal by introducing both larger and smaller scales to the flow. We also find that turbulence development over the upstream canopy influences the reattachment length in the wake.
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