Siphons: Some Scale-Effects in Models

by Richard B. Whittington, Reader in Civ. Engrg.; Univ. of Liverpool, U.K.,
Kamil H. M. Ali, Lect. in Civ. Engrg.; Univ. of Liverpool, U.K.,

Serial Information: Journal of the Hydraulics Division, 1972, Vol. 98, Issue 1, Pg. 45-70

Document Type: Journal Paper


A simple design of storm-overflow siphon for the city of Liverpool, England, has been tested in the laboratory at scales from 1/3 to 1/80. In this way, the effect of the absolute size of model upon the principal siphon phenomena is shown. These phenomena include discharge-coefficients, priming and depriming heads, and gage-pressures at the vertex. Eight models, geometrically similar to the prototype in all respects, have been used; also six models with square instead of circular cross sections, but otherwise geometrically following the prototype.

Subject Headings: Siphons | Scale models | Structural models | Geometrics | Urban areas | Head (fluid mechanics) | Cross sections

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