Cohesive sediment transport in the 3D-hydrodynamic-baroclinic circulation model,: study case for idealized tidal inlet |
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| Authors: | Wahyu W Pandoe Billy L Edge |
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| Institution: | Ocean Engineering Program, Department of Civil Engineering, Texas A&M University, College Station, Texas 77843-3136, USA |
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| Abstract: | This work provides a general hydrodynamic circulation model that can be used to understand density driven flows, which may arise in the case of suspension of fine-grained materials. The research is expected to provide a better understanding of the characteristics of spatial and temporal variability of current, which is associated with the period of ebb and flood tidal cycles.The model development includes extending the existing three-dimensional (3D) ADCIRC model with (1) baroclinic forcing term and (2) transport module of suspended and soluble materials. The transport module covers the erosion, material suspension and deposition processes for cohesive type sediment. In the case of an idealized tidal inlet in stratified water, the inclusion of baroclinic term can demonstrate the prevailing longshore sediment transport. It is shown that the model has application to the transport of the cohesive sediments from the mouth of the Mississippi River along the north shore of the Gulf of Mexico towards and along the Texas coast. |
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| Keywords: | Three-dimensional Baroclinic Saline wedge Cohesive sediment transport Longshore transport |
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