Direct Numerical Simulation of Scalar Transport Across the Interface Between a Porous Medium and a Turbulent Flow

Mass transport processes across the interface between a porous medium and a turbulent flow field are relevant in a wide range of natural and industrial systems: Prominent examples for technical applications range from food drying up to processes within fuel cells. In the environment, the exchange of substances within the hyporheic zone is vital for the health of aquatic ecosystems, whereas the evaporation from soils must be considered for sustainable land use. Despite the apparent heterogeneity of these fields, mass transport processes within the interface region are driven by a common set of mechanisms.