Self-aerating spillway flow

S. C. Wilhelms, J. S. Gulliver

Research output: Chapter in Book/Report/Conference proceedingConference contribution

7 Scopus citations


The concept upon which most past analyses are based is that a continuum exists in aerated flow from 100 percent water, to air bubbles in water, to a water-air mixture, to an air-water mixture, to water droplets in air, to 100 percent air. Measurements of air concentration would seem to indicate that this is the case inasmuch as the air concentration varies in a continuous fashion over the depth of flow. J.M. Killen however, showed in high-speed photos taken during flume experiments in the mid-fifties, that the water surface remained 'intact but very contorted' with a very small quantity of flying droplets over the surface. Hence, a well-mixed continuum of increasing air and decreasing water over depth does not exist. This paper redefines some of the concepts of self-aerated flow and discusses the impacts of these concepts on the areas of interest.

Original languageEnglish (US)
Title of host publicationProc 1989 Natl Conf Hydraulic Eng
PublisherPubl by ASCE
Number of pages6
ISBN (Print)0872627195
StatePublished - Dec 1 1989
EventProceedings of the 1989 National Conference on Hydraulic Engineering - New Orleans, LA, USA
Duration: Aug 14 1989Aug 18 1989

Publication series

NameProc 1989 Natl Conf Hydraulic Eng


OtherProceedings of the 1989 National Conference on Hydraulic Engineering
CityNew Orleans, LA, USA


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