Abstract: Results are presented from a series of laboratory experiments conducted on a large scale channel with sinuous planform geometry. These have been used to obtain the magnitude of the longitudinal dispersion coefficient. A ...

Abstract: An experimental study has been undertaken using a naturally formed meandering channel to obtain unique tracer and hydrodynamic data. The velocity data presented are from laser Doppler anemometer measurements; tracer data ...

Abstract: Mixing and dispersion processes affect the timing and concentration of contaminants transported within urban drainage systems. Hence, methods of characterizing the mixing effects of specific hydraulic structures are of ...

Abstract: Field measurements of velocity and salinity on a transverse cross section of a straight reach in the upper Conwy estuary have been used to evaluate the temporal and intratidal variations of the transverse and vertical shear ...

Abstract: New data describing the longitudinal dispersion of a solute tracer due to a surcharged manhole structure are presented. The increase in both travel time and dispersion caused by this structure is quantified over ranges of ...

Abstract: A residence time distribution (RTD) provides a complete model of longitudinal mixing effects that can be robustly derived from experimental solute transport data. Maximum entropy deconvolution has been shown to recover ...

Abstract: The advection-dispersion equation (ADE) or aggregated dead zone (ADZ) models and their derivatives are frequently used to describe mixing processes within rivers, channels, pipes, and urban drainage structures. The residence ...

Abstract: Longitudinal dispersion processes are often described by the advection dispersion equation (ADE), which is analogous to Fick’s law of diffusion, where the impulse response function of the spatial concentration distribution ...

Abstract: New data are presented describing the retention time and longitudinal dispersion of a solute tracer across circular surcharged manhole structures of different diameters. The variations with both discharge and surcharge ...

Abstract: Previous work has sought to investigate flow resistance caused by vegetation in open channels. However, many existing flow resistance models are based on data from artificial plant mimics in laboratory channels and are ...