A hydrodynamic simulation for the circulation and transport in coastal watersheds

A depth-averaged equation set is solved to simulate two Gulf of Mexico Coastal water-system circulations, Calcasieu Lake (Louisiana) and Mobile Bay (Alabama). A semi-implicit algorithm with an alternating-direction-implicit technique is employed to perform numerical computations on a staggered Carte...

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Bibliographic Details
Published in:Computers & fluids 2011-08, Vol.47 (1), p.178-188
Main Authors: Zhang, N., Zheng, Z.C., Yadagiri, Saikiran
Format: Article
Language:English
Subjects:
Accuracy
Circulation
Coastal
Computer simulation
Depth-averaged model
Earth sciences
Earth, ocean, space
Elevation
Exact sciences and technology
Fluid flow
Freshwater
Geomorphology, landform evolution
Hydrodynamic simulation
Marine and continental quaternary
Mathematical analysis
Surficial geology
Transport
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Summary:A depth-averaged equation set is solved to simulate two Gulf of Mexico Coastal water-system circulations, Calcasieu Lake (Louisiana) and Mobile Bay (Alabama). A semi-implicit algorithm with an alternating-direction-implicit technique is employed to perform numerical computations on a staggered Cartesian grid mesh that covers the targeted areas. The simulation results include effects from the major rivers around the water systems. Time histories of simulated water-surface elevations are compared to the measurement data and the good agreements prove the accuracy of the results. Flow patterns and elevation contours are compared during flood and ebb tides. Velocity vectors and particle tracers are used to indicate the flow patterns and related transport of the circulations. The results also show the effects of geometry on flow and flow-related transport.
ISSN:0045-7930
1879-0747
DOI:10.1016/j.compfluid.2011.03.008