A Comparative Analysis of Lajeunesse Model with other Used Bed Load Models - Effects on River Morphological Changes
Journal of Water Resources and Ocean Science
Volume 3, Issue 5, October 2014, Pages: 61-68
Received: Sep. 23, 2014;
Accepted: Oct. 10, 2014;
Published: Oct. 20, 2014
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Mohamed Gharbi, Laboratory of Water Sciences and Technology, National Institute of Agronomy of Tunisia, University of Carthage, Tunis, Tunisia
Amel Soualmia, Laboratory of Water Sciences and Technology, National Institute of Agronomy of Tunisia, University of Carthage, Tunis, Tunisia
Denis Dartus, Institute of Fluid Mechanics of Toulouse, National Polytechnic Institute of Toulouse, University of Toulouse, Toulouse, France
Lucien Masbernat, Institute of Fluid Mechanics of Toulouse, National Polytechnic Institute of Toulouse, University of Toulouse, Toulouse, France
Among the phenomena that greatly influence the river morphology is the sediment transport, especially the bed load mode causing a significant changes in the river morphology. Indeed, the choice of a model or a methodology that can better quantify sediment transport, remains always poorly understood. In this context, a new approach to studying the morphological evolution of rivers is proposed by Charru in 2004, it is based on a model for the erosion and deposition of the particles under laminar flow. In 2006, Charru proposes an extension of this model to turbulent flow. In more advanced research, Lajeunesse in 2010, realizes an experimental study to support the erosion deposition model of Charru, and proposes a new formula to calculate the bed load transport rate. The current research focuses on the effects of bed load transport on the morphological changes in rivers. In the first part, a comparative analysis of empirical laws of bed load transport with experimental data was conducted, in order to test and validate the new bed load model proposed by Lajeunesse, then to check the grain size effect on the sediment transport capacity. In the second part, we are interested in the study of the morphological evolution in rivers. It was performed through numerical modeling using TELEMAC 2D coupled with SISYPHE. The aim is to understand and analyze the morphological changes in the channel bottom. The analysis of the results presented in this paper showed that through the calculated score, most formulas give satisfactory results. In particular at the grain scale, the new bed load transport relation of Lajeunesse, provides an excellent fit to the experimental data. Finally, we were interested in the study of the morphological changes in the channel bottom, it appers clear that the bed load transport has large impacts on river morphology.
A Comparative Analysis of Lajeunesse Model with other Used Bed Load Models - Effects on River Morphological Changes, Journal of Water Resources and Ocean Science.
Vol. 3, No. 5,
2014, pp. 61-68.
F. Charru, H. Mouilleron, and O. Eiff, “Erosion and deposition of particles on a bed sheared by a viscous flow,” Journal of Fluid Mechanic, Vol. 519, pp. 55–80, 2004.
F. Charru, “Selection of the ripple length on a granular bed sheared by a liquid flow,” Journal Physics of Fluids, Vol. 18, pp. 121508-1, 2006.
E. M. Franklin, “Dynamique de dunes isolées dans un écoulement cisaillé, ” Thesis, University of Toulouse, 2008.
M. García, “Sedimentation Engineering: Processes, Measurements, Modeling, and Practice, in Examining the Confluence of Environmental and Water Concerns,” World Environmental and Water Resource Congress, Graham, pp. 91-94, 2006.
P. Belleudy, “Restoring flow capacity in the Loire River bed,” Hydrological Processes. Hydrol, Process 03. 1220-1233, 2000.
M. Gharbi, and A. Soulamia, “Modélisation de la prévision des crues éclair au niveau du bassin versant de la Medjerda,” Revue de Mécanique Appliquée et Théorique, Vol. 2, 6, pp.585-595, 2013.
M. Gharbi, and A. Soulamia, “Simulations des crues éclair au niveau de la haute vallée de la Medjerda,” Deuxième Congrès Tunisien de Mécanique COTUME, Sousse, Tunisie, pp.81-86, 2012.
M. Houssais, and E. Lajeunesse, “Bed load transport of a bimodal sediment bed,” Journal of Geophysical Research, pp 115-1, 2012.
E. Lajeunesse, L. Malverti, and F. Charru, “Bed load transport in turbulent flow at the grain scale: Experiments and modeling,” Journal of Geophysical Research, Vol. 115, 2010.
A. Recking, “An analysis of nonlinearity effects on bed load transport prediction,” Journal of Geophysical Research: Earth Surface, Vol. 118, pp.1-18, 2013.
A. Recking, P. Frey, A. Paquier, and P. Belleudy, “An experimental investigation of mechanisms involved in bed load sheet production and migration,” Journal of Geophysics Research Vol.114, 2009.
A.F. Shields, Application of similarity principles and turbulence research to bed-load movement, Mitteilungen der Preussischen Versuchsanstalt fur Wasserbau und Schiffbau, Germany,” pp 5–24, 1936.
L. C. Van Rijn, “Principles of Sediment Transport in rivers, Estuaries and Coastal Seas,” Aqua Publications in Netherlands: pp.1-612, 1993.
E. Meyer‐Peter, and R. Müller, “Formulas for bed‐load transport, “ The 2nd Meeting of International Association for Hydraulic Research,” Int. Assoc. for Hydraul, Stockholm, Germany, 1948.
K. Ashida, and M. Michiue, “Studies on bed-load transport rate in open channel flows,” International Association for Hydraulic Research International, Symposium on River Mechanics, Bangkok, Thailand, pp.407–417, 1973.
H. Einstein, “The bed-load function for sediment transportation in open channel flows,” Tech. Bull, U.S, Departement of Agriculture, Washington, D. C, 1950.
F. Engelund, and J. Fredsoe, “A sediment transpot model for straight alluvial channels,” Nord. Hydrol, Vol 7(5), pp.293–306, 1976.
R. Fernandez-Luque, and R. Van Beek, “Erosion and transport of bed load sediment,” Journal of Hydraulic Research, Vol.14, pp.127–144, 1976.
R. Bagnold, “The flow of cohesionless grains in fluids,” Philos. Trans. R. Soc. London A, Vol.249, pp.235–297, 1956.
J. S. Bridge, and D. F. Dominic, “Bed load grain velocity and sediment transport rates,” Water Resourc. Res, Vol.20, pp. 476–490, 1984.
M. Wong, “Does the bedload equation of Meyer Peter and Müller fit its own data,” 30th Congress of the International Association for Hydraulic Research, Int. Assoc. of Hydraul. Res., Thessaloniki, Greece, 2003.
C Villaret, and J. M. Hervouet, “Comparaison croisée de différentes approches pour le transport sédimentaire par charriage et suspension, ” Laboratoire National d'Hydraulique et Environnement. IXèmes Journées Nationales Génie Civil – Génie Côtier, 2006.
Wu Weiming, W Rodi, and T. Wenka, “3D Numerical Modeling of Flow and sediment transport in open Channels,” Journal of Hydraulic Enginee.
O. E. Sequeiros, B. Spinewine, R. T. Beaubouef. T. Sun, M. H. Garcia, and G. Parker, “Bed load transport and bed resistance associated with density and turbidity currents,” Journal of International Association of Sedimentologists, Sedimentology, Vol. 57, pp.1463–1490, 2010.
H. Chanson, “The Hydraulics of Open Channel Flow: An Introduction,” Butterworth-Heinemann, 2nd edition, Oxford, UK, pp. 3-8, 2004.
S. Talukdar, Bimlesh Kumar, and S. Dutta, “Predictive capability of bedload equations using flume data,” Journal of Hydrol. Hydromech, Vol. 60, pp. 45–56, 2012.
M. S. Yalin, “Mechanics of Sediment Transport,” Pergamon, New York, 1977.