Investigation of Wave-Induced Oscillations in Sewage Outfalls

by Kamil H. M. Ali, Univ of Liverpool, Liverpool, England,
Richard Burrows, Univ of Liverpool, Liverpool, England,
Richard Mort, Univ of Liverpool, Liverpool, England,



Document Type: Proceeding Paper

Part of: Coastal Zone '87

Abstract: The work described in this paper deals with the effect of wave action on the hydraulic performance of a sewage effluent outfall. The outfall under consideration is an inverted siphon. Experimental work was carried out to determine the effect on oscillations at the upstream end of the siphon of, (i) wave period and height, (ii) varying rates of discharge through the outfall, and (iii) the placing of a cover over the bellmouth spillway in order to prevent waves acting upon the outlet. Numerical solutions were obtained using F. M. Henderson's equations.

Subject Headings: Water waves | Siphons | Oscillations | Spillways | Numerical methods | Hydraulics | Sewage | Water pipelines

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