Evaluation of Optimum Performance of Lateral Intakes
In designing river intakes and diversion structures, it is paramount that the sediments entering the intake are minimized or, if possible, completely separated. Due to high water velocity, sediments can significantly damage hydraulic structures especially when mechanical equipment like pumps and turbines are used. This subsequently results in wasting water, electricity and further costs. Therefore, it is prudent to investigate and analyze the performance of lateral intakes affected by sediment control structures. Laboratory experiments, despite their vast potential and benefits, can face certain limitations and challenges. Some of these include: limitations in equipment and facilities, space constraints, equipment errors including lack of adequate precision or mal-operation, and finally, human error. Research has shown that in order to achieve the ultimate goal of intake structure design – which is to design longlasting and proficient structures – the best combination of sediment control structures (such as sill and submerged vanes) along with parameters that increase their performance (such as diversion angle and location) should be determined. Cost, difficulty of execution and environmental impacts should also be included in evaluating the optimal design. This solution can then be applied to similar problems in the future. Subsequently, the model used to arrive at the optimal design requires high level of accuracy and precision in order to avoid improper design and execution of projects. Process of creating and executing the design should be as comprehensive and applicable as possible. Therefore, it is important that influential parameters and vital criteria is fully understood and applied at all stages of choosing the optimal design. In this article, influential parameters on optimal performance of the intake, advantages and disadvantages, and efficiency of a given design are studied. Then, a multi-criterion decision matrix is utilized to choose the optimal model that can be used to determine the proper parameters in constructing the intake.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1062288Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 1858
 A. J. Raudkivi, "Sedimentation, Exclusion and Removal of Sediment from Diverted Water," IAHR, Balkema, The Netherlands, 1993, pp. 63- 87.
 V. Neary, F. Sotiropoulos, and A. J. Odgaard, "Three-Dimensional Numerical Model of Lateral-Intake Inflows," Journal of Hydraulic Engineering, Vol. 125, No. 2, 1999, pp. 126-140.
 M. A. Bergs, "Flow Processes in a Curved Alluvial Channel," Unpublished, Ph. D Thesis, University of Iowa, 365 pp, 1990.
 R. Booij, "Modeling of the Secondary Flow Structure in River Bends," River Flow, Bousmar & Zech (eds), ISBN 90 5809 509 6, 2002, pp. 127- 133.
 K. Blanckaert, "Analysis of Coherent Flow Structures in a Bend Based on Instantaneous-Velocity Profiling," Third International Symposium on Ultrasonic Doppler Methods for Fluid Mechanics and Fluid Engineering EPFL, Lausanne, Switzerland, 2002, pp. 51-58.
 J. C. A. Russel, "The Optimum Location for a Canal Sediment Extractor," Report OD/TN 55, HR Wallingford, Oxford shire, UK, 1991.
 E. Razvan, "River Intakes and Diversion Dams," Amsterdam, 1989.
 P. Novak, A. Morfett, and C. Nalluri, "Hydraulic Structures," Pitman, London, 546 pp, 1990.
 J. L. Boillat, and G. De Cesare, "Dichtestrmungen im Bereich des Grundablasses des Stausees Luzzone-Modellversuche," Tagungsband (proceeding) des Symposiums "Betrieb, Erhaltung und Erneuerung von Talsperren und Hochdruckanlagen", Graz, Austria, 1994, pp. 183-192.
 P. J. Kerssen, and A. Urk, "Experimental studies on sedimentation due to water withdrawal," J. Hydr. Engrg., ASCE, 112(7), 1986, pp. 641- 656.