Settling Tank Model for Deposition in a Tidal Lagoon

by Richard N. Weisman, Lehigh Univ, Bethlehem, PA, USA,
Craig L. Young, Lehigh Univ, Bethlehem, PA, USA,
Gerard P. Lennon, Lehigh Univ, Bethlehem, PA, USA,

Document Type: Proceeding Paper

Part of: Hydraulic Engineering


A model is developed to assess deposition of suspended sediment in Great Sound, New Jersey. The model employs the classic settling tank concept which utilizes plug flow hydrodynamics, assuming no longitudinal diffusion or dispersion. Unlike the classic settling tank concept, the model developed here considers changing flow rate and water level through a tidal cycle and has only one inlet/outlet. It is shown that dispersion is negligible in Great Sound which has small areal extent and relatively low velocities; thus plug flow hydrodynamics may be adequate for this environment.

Subject Headings: Tides | Suspended sediment | Sedimentation tanks | Hydrodynamics | Water tanks | Water level | Lagoons | New Jersey | United States

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