Design Chart for Predicting Critical Point on Spillways

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Abstract
A design chart is developed for predicting the distance from the spillway crest to the critical point where self-aeration commences. Synthetic data covering a wide range of possible spillway flow situations are fed into a previously developed and verified theoretical model. The results are presented in terms of generalized design variables using dimensional analysis. The resulting design chart is applicable only to the standard WES spillway shape with vertical upstream face. Generalization of the design charts to other spillway shapes must await detailed model studies of such spillways.

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