The process descriptions are based on hydrodynamic and soil mechanic principles, which integrate at the soil-water interface. This approach is substantiated through a classification scheme of sediment occurrences in which distinction is made between cohesive and granular material. Emphasis is also placed on the important interactions between turbulent flow and cohesive sediment suspensions, and on the impact of flow-induced forces on the stability of the seabed.
An overview of literature on cohesive sediment dynamics is presented and a number of new developments are highlighted, in particular in relation to floc formation, settling and sedimentation, consolidation, bed failure and liquefaction and erosion of the bed. Moreover, it presents a summary on methods and techniques to measure the various sediment properties necessary to quantify the various parameters in the physical-mathematical model descriptions. A number of examples and case studies have been included.
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2. Boundary layer flow.
3. The nature of cohesive sediment.
4. Flocculation processes.
5. Settling and sedimentation.
6. Sediment-fluid interaction.
7. Self-weight consolidation.
8. Mechanical behaviour.
9. Erosion and entrainment.
10. Biological effects.
11. Gas in cohesive sediment.
Appendix A: Nomenclature.
Appendix B: Definitions and useful relations.
Appendix C: Measuring techniques.
Appendix D: Tensor analysis.
Appendix E: The 1DV Point Model.
Walther G.M. van Kesteren Delft Hydraulics, The Netherlands.