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Numerical Modeling of River Sedimentation: Application to the Rice Farming Lowlands of Sindou, Burkina-Faso
Hydrology
Volume 8, Issue 4, December 2020, Pages: 62-68
Received: Oct. 18, 2020; Accepted: Nov. 5, 2020; Published: Nov. 27, 2020
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Authors
Bama Nati Aïssata Delphine, Plant Production Department, Institute for the Environment and Agricultural Research (INERA), Ouagadougou, Burkina Faso
Kouakou Ariel Michée, International Institute for Water and Environmental Engineering (2iE), Ouagadougou, Burkina Faso
Leye Babacar, International Institute for Water and Environmental Engineering (2iE), Ouagadougou, Burkina Faso
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Abstract
The development of the shallows has become essential in the fight against hunger in Burkina Faso. In addition, rivers there are subject to massive silting up caused by erosion. These sedimentary deposits tend to gradually reduce the flow section, thus promoting the retention of pollutants in streams. So in order to prevent this phenomenon, it is important to have tools to predict the evolution of sedimentation. The coupled equation of Shallow-water-Exner, treated from the complete system, was used in this study. Indeed, the complexity of the analytical resolution of this equation requires to adopt a numerical resolution. The finite volume method was chosen. The first step was to collect sedimentation data from the lowland of Sindou using locally made tools. Simulations are carried out in order to test the model's performance. Sensitivity analysis showed that the model is sensitive to disturbances in friction and slope parameters of the field. The results showed the tool's ability to simulate the sedimentation of actual unsatisfactory cases. In fact, bad appreciation of parameters, friction and the absence of the topographic data generate a large margin of error between the simulated and observed values showing a difference in the shape of the carried sediments curves.
Keywords
Lowland, Finite Volume Method, Streams, Equation Shallow-water-Exner, Sedimentation
To cite this article
Bama Nati Aïssata Delphine, Kouakou Ariel Michée, Leye Babacar, Numerical Modeling of River Sedimentation: Application to the Rice Farming Lowlands of Sindou, Burkina-Faso, Hydrology. Vol. 8, No. 4, 2020, pp. 62-68. doi: 10.11648/j.hyd.20200804.11
Copyright
Copyright © 2020 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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