Abstract
ABSTRACT The dynamics of cohesive sediments in natural water bodies is of great importance for coastal engineering. Quite often, it is necessary to assess sedimentological processes in regions where cohesive sediments are prevalent, such as in many harbors. Such assessments poses challenges, especially in quantitative evaluations, as the physics involved in the transport, sedimentation and erosion of cohesive sediments is rather complex. For that, by all means, it is important to have analysis tools capable of computing cohesive sediments dynamics. This paper presents the development of a vertically averaged eulerian transport model for suspended cohesive sediments. Such model is currently available on SisBaHiA®, which is a computational modeling system developed and maintained in COPPE/UFRJ. After describing the model implementation, we present a discussion on consistency and validation tests, for each implemented mechanism within the sedimentological process, with a focus in the erosion and sedimentation fluxes. In sequence, we compare model results with the theoretical results and, for some tests, with the results of the simulations performed with the Delft3D® and Telemac® modeling systems. These models are similar to the one presented in this paper, and are well accepted and widely used on professional projects and studies. The tests showed that the developed model results were consistent for all the evaluated mechanism, and hence it’s positively verified.
Highlights
The erosion and sedimentation phenomena, caused by sediment transport in natural water bodies, often concern Coastal and Fluvial Engineering
In respect to sediments transport, the class of cohesive sediments poses the greatest challenges in studies and engineering projects, because its transport dynamics is rather complex and depends upon many interdisciplinary aspects that have to be taken into account
The existence of analysis tools capable of properly describing the sedimentological processes for fine cohesive sediments is of great importance
Summary
The erosion and sedimentation phenomena, caused by sediment transport in natural water bodies, often concern Coastal and Fluvial Engineering. In respect to sediments transport, the class of cohesive sediments poses the greatest challenges in studies and engineering projects, because its transport dynamics is rather complex and depends upon many interdisciplinary aspects that have to be taken into account. For such reason, the existence of analysis tools capable of properly describing the sedimentological processes for fine cohesive sediments is of great importance. These set of processes can be divided into four groups: (i) Flocculation, (ii) Settling & Deposition, (iii) Consolidation, and (iv) Erosion. For the erosive process, recommended works are Partheniades (1965), Kandiah (1974), Ariathurai and Arulanandan (1978), and Parchure and Mehta (1985)
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
