Vortex Drop Inlet for Supercritical Approaching Flow
Publication: Journal of Hydraulic Engineering
Volume 116, Issue 8
Abstract
The inlet of vortex drops for supercritical approaching flow is discussed. Based on detailed experimental observations collected at various inlet geometries, the shape of vortex inlet was optimized. The geometry recommended is of spiral shape, and depends mainly on the shaft radius and on the width of the approaching channel. Particular features of the inlet are its wide domain of application regarding the Froude number and bottom slope of the approaching channel, and zero transverse inlet slope. The discharge capacities of vortex drops are shown to be of the same order for both sub‐ and supercritical approach flows. Further, the surface profile along the outer guiding wall is analyzed. It is found that both the Froude number of the approach flow and the radius of outer inlet wall influence significantly the maximum height of standing wave. A nondimensional surface profile along the outer wall is given, and prominent flow features in drop inlet structures are discussed.
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References
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Information & Authors
Information
Published In
Journal of Hydraulic Engineering
Volume 116 • Issue 8 • August 1990
Pages: 1048 - 1054
Copyright
Copyright © 1990 ASCE.
History
Published online: Aug 1, 1990
Published in print: Aug 1990
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