Polyhedric Surfacesby Gabriel Echavez, UNAM, Mexico City, Mexico,
Felipe Arreguin, UNAM, Mexico City, Mexico,
Abstract: A new design for spillways is proposed. The basic idea is to substitute the traditional shape of the continuous vertical bends by polygonal plane surfaces. In this way it is possible to construct spillways with plane surfaces which are easier and cheaper to build. Aeration system to protect the spillway against cavitation are also easier to construct. Schwartz-Christoffel transformation is used to analyse the flow on the polyhedric surfaces. The theoretical results agree with the model measurements in the concave curves. For convex curves flow separation precludes its application. General results that support the new design proposed are shown.
Subject Headings: Spillways | Hydraulic design | Mathematical models | Curvature | Bending (structural) | Aeration | Protective structures | Cavitation
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