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Published:
Jul 9, 2012Keywords:
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Main Article Content
Modelling Flow over Stepped Spillway with Varying Chute Geometry
Abstract
This study has modeled some characteristics of the flows over stepped spillway with varying chute geometry through a laboratory investigation. Using six physically built stepped spillway models, with each having six horizontal plain steps at 4cm constant height, 30 cm width and respective chute slope angles at 310, 320, 330, 340, 350 or 360 placed respectively within a tilting flume to obtain some varying flow data in 36 different experiments. These obtained flow data were used as inputs in a simple regression analysis to derive the parameters for each of the three mathematical relationships developed through dimensional analysis to respectively predict the flow rate, the sequent depth ratio and the total energy dissipated in the non-aerated flow region over each of the stepped spillway models. The percentage difference between the values predicted by each of these modeled equations and their respective actual values ranges between 0.10% and 1.28%.
