Abstract: Principal results of classical experiments on the effects of sandgrain roughness are briefly reviewed, along with various models that have been proposed to account for these effects in numerical ...

Abstract: A two-dimensional numerical model, based on solution of the Reynolds-averaged Navier-Stokes equations and the

Abstract: The boundary layer over a wavy wall and fully-developed flow in a duct with a wavy wall are considered. Numerical solutions of the Navier-Stokes equations have been obtained to provide insights ...

Abstract: A numerical method for the solution of the Reynolds-averaged Navier-Stokes equations, together with a two-layer turbulence model, has been used to describe steady flow in a two-dimensional channel ...

Abstract: A two-dimensional numerical model for a dune-bed channel is extended to describe the flow structure in a channel with a bed of prescribed geometry and roughness, and a free-floating ice cover of known roughness. The model ...

Abstract: A

Abstract: Field study is an essential component of hydrologic science because all hydrological studies must be conducted by such observation-based knowledge of real watersheds. Hillslope runoff processes have been intensively ...

Abstract: The upscaled hydrologic conservation equations in the Watershed Environmental Hydrology (WEHY) model are capable of taking into account the effect of heterogeneity within natural watersheds. Model parameters that are capable ...

Abstract: The Watershed Environmental Hydrology model presents a new approach to the modeling of hydrologic processes in order to account for the effect of heterogeneity within natural watersheds. Toward this purpose, the point ...