BACKGROUND: Inland waterways provide many benefits to society but serve primarily as conduits of water and sediment. Bank erosion, channel sedimentation, and reservoir infilling remain challenges to the effective management of waterways. Reservoirs have a limited service life, associated in part with the reduced capacity caused by infilling. The USACE manages more than 600 reservoirs, many of w...

A small spheroid settling in a quiescent fluid experiences an inertial torque that aligns it so settles with its broad side first. Here we show active particle such too, as at rest. For spherical squirmer, the is $\boldsymbol {T}^\prime = -{\frac {9}{8}} m_f (\boldsymbol {v}_s^{(0)} \wedge \boldsymbol {v}_g^{(0)})$ where {v}_s^{(0)}$ swimming velocity, {v}_g^{(0)}$ velocity Stokes approximation...

Mineral processing is intensive in water usage. Unfortunately, a large portion of this valuable asset contaminated by toxic species that leach from tailings or mineral ore, leading to the formation acid drainage. Water drainages can still be recovered passive environmentally friendly treatments. An underestimated treatment settling harmful metals, such as iron and aluminum. In sense, floc drain...

According to the previous studies of sediment carrying capacity, a new method of sediment carrying capacity on perturbed theory was proposed. By taking into account the average water depth, average flow velocity, settling velocity, and other influencing factors and introducing the median grain size as one main influencing factor in deriving the new formula, we established a new sediment carryin...