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- W3046113239 endingPage "103705" @default.
- W3046113239 startingPage "103705" @default.
- W3046113239 abstract "The effect of emergent stems on the transport of downstream floating particles (e.g., buoyant seeds) is explored theoretically and experimentally at moderate to high Reynolds number (Rd=2Ubas/υ>300) in an open channel, where Ub is the bulk velocity, as is stem radius, and ν is the kinematic viscosity. Longitudinal dispersion (Dl) of such seeds is shown to be given by Dl=Up3τ02η(1−η)/2/(S1+ητ0Up) thereby requiring the bulk transport velocity of particles Up, spacing between canopy elements S1, collision efficiency η between a particle and the stem, and a wake trapping time scale τ0. Linkages between Up and Ub, and terms η and τ0 are then derived using inhomogeneous flow characteristics adjacent to the stem with physical properties of particles. A semiempirical model with potential flow theory around the stem is introduced to estimate η whereas τ0 is shown to be related to the bulk drag coefficient and radius of stems. The Dl is experimentally determined across a wide range of Rd and particle sizes and shown to be in good agreement with the proposed model calculations." @default.
- W3046113239 created "2020-08-03" @default.
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- W3046113239 date "2020-10-01" @default.
- W3046113239 modified "2023-10-06" @default.
- W3046113239 title "Longitudinal dispersal properties of floating seeds within open-channel flows covered by emergent vegetation" @default.
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- W3046113239 doi "https://doi.org/10.1016/j.advwatres.2020.103705" @default.
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