The Structure of Turbulence Across the Sediment-Water-Interface

Abstract

An increasing body of literature indicates that turbulence is a major contributor to the exchange of mass and momentum across the sediment-water-interface (SWI). The permeability Reynolds number ReK = p Ku_=u is a key parameter describing the flow at the SWI, where K is the permeability of the porous medium. The dynamics of turbulence around the SWI are determined by the intricate interaction between the hydrodynamics and the sediment characteristics, however, traditional experimental techniques are hindered in accessing this region properly, making experimental data rare. In this work we describe novel experimental results, which combines refractive index matching (RIM) and particle trackin..