Abstract: The “velocity pulse model” simulates the transfer of turbulence from flowing water into a sediment bed, and its effect on the diffusional mass transfer of a solute (e.g., oxygen, sulfate, or nitrate) in the sediment bed. ...

Abstract: A model of sedimentary oxygen demand (SOD) for a sediment bed of finite length is presented. The responses of diffusive oxygen transfer in turbulent flow above the sediment surface and of microbial activity inside the ...

Abstract: A microbial dissolved oxygen (DO) uptake model was developed for a stream bed, including the effect of turbulence in the flow over the bed and pore water flow in the porous bed. The fine-grained sediment bed has hydraulic ...

Abstract: Numerical one-dimensional (1D) model simulations were performed on the infiltration of freshwater as saturated plug flow into an unsaturated sandy soil at field capacity composed of coarse sand or sands (with saturated ...

Abstract: Numerical one-dimensional (1D) model simulations were performed on the infiltration of freshwater as saturated plug flow into an unsaturated sandy soil at field capacity composed of coarse sand or sands (with saturated ...

Abstract: Time-variable (periodic) flow over a lake bed, and the associated boundary layer development, have the potential to control or at least influence rates of mass transfer across the sediment/water interface. An analysis for ...