Estuarial Sediment Bed Model
| Autor: | Earl J. Hayter |
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| Rok vydání: | 2013 |
| Předmět: | |
| Zdroj: | Estuarine Cohesive Sediment Dynamics ISBN: 9780387962962 Estuarine Cohesive Sediment Dynamics |
| Popis: | A layered cohesive sediment bed model used to simulate the formation, erosion and consolidation of the type of beds typically found in estuaries is described. The model is divided into three bed sections: unconsolidated stationary suspensions, partially consolidated beds, and settled (fully consolidated) beds. The model is further divided into a finite number of strata in order to account for repeated periods of deposition, as typically occur in estuaries due to the oscillatory tidal flow. The erosion algorithm included in the model simulates the reentrainment of stationary suspensions and the resuspension of partially consolidated and settled bed layers. The empirical consolidation algorithm ac-counts for the self-weight consolidation of stationary suspensions and partially consolidated beds by increasing the bed density and bed shear strength and de-creasing the bed thickness with time. The degree of consolidation of a particular stratum is accounted for by using a separate consolidation time for each stratum. Results from simulations using the bed model are presented in the form of bed structure-time plots. |
| Databáze: | OpenAIRE |
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