Chapter Title
Mechanisms of Fish Damage in Low Head Turbines: An Experimental Appraisal
Publication Date
1998
Keywords
bypass, bypass channels, cavitation, channel, fish bypass, hydraulics, hydroelectric, low head turbines, migration, salmonids, turbines, turbulence
Chapter number
23
Start Page
300
End Page
314
Book Title
Fish Migration and Fish Bypasses
Editors
Jungwirth M;Schmutz S;Weiss S;
Publication Place
Oxford
Publisher
Fishing News Books
ISBN
0-85238-253-7
Abstract
A number of mechanisms for fish damage during passage through hydro-electric turbines have been postulated, including exposure to rapid pressure changes, to hydraulic shear and turbulence and to cavitation, as well as to collision with the fixed or moving machinery. In a major laboratory programme, experiments were conducted to simulate each of these effects separately so that their relative importance could be determined. Special apparati were developed for this purpose. The main findings are presented and interpreted in relation to fish damage assessment for low - headturbine sites. Particular reference is made to salmonid species.