Abstract
A new analytical model is presented in order to better understand the
depth-dependent wave-induced steady current caused by submerged aquatic
canopy-oscillatory flow interaction. The analytical model takes into
account the wave and canopy properties. The model is developed by
determining the dominant terms in the momentum equation by means of
dimensional analysis and satisfying the mass conservation. The
dimensional analysis reveals that the pressure gradient (due to wave
decay) is of the same order of magnitude as the drag force, wave stress
and Reynolds stress terms. In addition, the balance between the pressure
gradient and mass conservation induces a seaward current above the
canopy, and the presence of the pressure gradient in the momentum
equation contributes to intensify the skimming flow at the top of the
canopy. Finally, given that the model follows a polynomial function it
can be easily implemented in large scale models such as phase average
models.