Document Type : Research Paper
Authors
Water Engineering Department, Lorestan University Khoram Abad, Lorestan Province, Iran.
Abstract
Allocation and removing of excess water from the irrigation and drainage network is one of the most important activities in the management of these networks. Side weir is one of the most common structures for this purpose. Study on the flow Hydraulic characteristics of this structure included two parts, defining the water surface profiles and estimating the discharge coefficient. To estimate the discharge coefficient, many ways as experimental formulas and artificial intelligent models are propose. The empirical formula for simplifying in developing process that assume by the authors, contained significant error so using the AI models are inevitable. In this paper, some of the famous empirical formula and AI models such as Multilayer neural network (MLP) and Adaptive Neuro fuzzy inference system (ANFIS) are assessing with a laboratory experiment. Among the experimental formula, Borghei formula is most accurate (R2=0.83) and the performance of the AI model in Training and testing stage is more suitable (R2=0.96).
Keywords
Al-Taee A.y., Theoretical analysis of flow over the side weir using runge kutta method. annals of faculty engineering hunedoara – International Journal Of Engineering 4 (2012) 47-50.
Bilhan O., Emiroglu M.E., Kisi O., Use of artificial neural networks for prediction of discharge coefficient of triangular labyrinth side weir in curved channels, Advances in Engineering Software 42 (2011) 208–214.
Borghei S.M., and Parvaneh A., Discharge characteristics of a modified oblique side weir in subcritical flow, Flow Measurement and Instrumentation 22 (2011) 370–376.
Cosar A., and Agaccioglu H., Discharge Coefficient of a Triangular Side-Weir Located on a Curved Channel, Journal ofirrigation and drainage engineering 130 (2004) 410–423.
Emiroglu M.E., Agaccioglu H., and Kaya N., Discharging capacity of rectangular side weirs in straight open channels, Flow Measurement and Instrumentation 22 (2011) 319-330.
Ghodsian M., Flow over triangular side weir, Journal Scientia Iranica Transaction on Civil Engineering 11 (2004) 114–120.
Haddadi H., M. Rahimpour M., A discharge coefficient for a trapezoidal broad-crested side weir in subcritical flow. Flow Measurement and Instrumentation 26 (2012) 63–67.
Hager H., lateral outflow over side weirs, Journal of Hydraulic Engineering 113 (1987) 491-504.
Honar T., Javan M., Discharge Coefficient in Oblique Side Weirs, Iran Agricultural Research 25 (2007) 27-35.
Kumar S., Discharge Characteristics of Sharp Crested Weir of Curved Plan-form. Research Journal of Engineering Sciences 1 (2012) 16-20.
Kaya N., Effect of upstream crest length on flow characteristics and discharge capacity of triangular labyrinth side weirs, Scientific Research and Essays 5 (2010) 1702-1712.
Kaya N., Emiroglu M.E., Agaccioglu H., Discharge coefficient of a semi-elliptical side weir in subcritical flow, Flow Measurement and Instrumentation 22 (2011) 25-32.
Kumar S., A New Approach to Analyze the Flow over Sharp Crested Curved Plan form Weirs, International Journal of Recent Technology and Engineering 2 (2013) 24-28.
Kumar S., Ahmad Z., Mansoor T., A new approach to improve the discharging capacity of sharp-crested triangular plan form weirs, Flow Measurement and Instrumentation 22 (2011) 175–180.
May R.W.P., hydraulic design of side weir. 2003, London: Thomas Telford publishing.
Misra S.R., Managing Canal Irrigation in India: Problems and Their Resolutions, 2000: Concept Publishing Company.
Parsaie A., Haghiabi A.H., Development and evaluating of two-neural network model (MLP and SVM) to estimate the Side weir discharge coefficient, International Journal of Agriculture and Crop Sciences 5 (2013) 2804-2811.
Rahimi A., Hydraulic Design of Side Weirs by Alternative Methods, Australian Journal of Basic and Applied Sciences 6 (2012) 157-167.
Subramanya K., SC A., Spatially varied flow over side weirs. J. of the Hydraul Division 98 (1972) 1-10.
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