Predicting the Filling of Ventilated Cavities Behind Spillway Aerators

Chanson, Hubert (1995) Predicting the Filling of Ventilated Cavities Behind Spillway Aerators. Journal of Hydraulic Research, 33 3: 361-372.

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Author	Chanson, Hubert
Title	Predicting the Filling of Ventilated Cavities Behind Spillway Aerators
Journal name	Journal of Hydraulic Research Check publisher's open access policy
Publication date	1995-01-01
Sub-type	Article
Volume number	33
Issue number	3
ISSN	0022-1686
Start page	361
End page	372
Total pages	12
Language	eng
Subject	290802 Water and Sanitary Engineering 290800 Civil Engineering
Abstract	Cavitation damage to spillway surfaces may be prevented with the use of aeration devices. These serve to introduce air in the layers close to the channel bottom in order to reduce cavitation erosion. Under some circumstances, the aerator can be drowned out and will cease to protect the spillway surface. This article analyses the conditions of filling. Then experimental data for ten aerator geometries are reviewed. Depending upon the aerator geometry, the cavity filling occurs when the Froude number is less than a critical value or when the ratio of the flow depth over the total offset is larger than a characteristic value.
Keyword	spillway aeration devices air flow submergence cavitation damage prevention cavity filling ventilated cavity flows
Q-Index Code	C1
Q-Index Status	Provisional Code
Institutional Status	Unknown

Document type:	Journal Article
Sub-type:	Article
Collection:	School of Civil Engineering Publications

Citation counts:	Cited 13 times in Thomson Reuters Web of Science Article \| Citations Search Google Scholar
Access Statistics:	559 Abstract Views, 251 File Downloads - Detailed Statistics
Created:	Fri, 02 Sep 2005, 10:00:00 EST by Hubert Chanson

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