Validation of a model to predict fish passage mortality in pumping stations

B.P.M. Esch, van, I.L.Y. Spierts

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13 Citaten (Scopus)
3 Downloads (Pure)


A total of 1253 live cyprinids and eel are exposed to a centrifugal pump to study fish damage rates in a wide operating range. The observed types of injuries were consistent with a mechanical cause of damage. The measured mortality rates for cyprinids show a fair agreement with a blade strike model based on empirical data by EPRI. Analysis of the experiments with eel led to a new correlation for the blade mortality ratio for this species: lethal injury rate is shown to be zero up to a strike velocity of 8 m/s, and increases linearly to 42% for a strike velocity of 15 m/s. Use was made of video recordings that provided valuable information on the orientation and distribution of fish approaching the impeller. Results are presented using a new method to visualize fish mortality of a pump in its entire operating range, in graphs of head versus flow rate. The theory of pump hydrodynamics is used to derive a method to scale results of fish damage rate, either obtained by a model or by experiments, to different pump sizes, shaft speeds, or fish lengths. This will prove essential for a valid interpretation of pump experiments with fish.
Originele taal-2Engels
Pagina's (van-tot)1910-1923
TijdschriftCanadian Journal of Fisheries and Aquatic Sciences
Nummer van het tijdschrift12
StatusGepubliceerd - 2014


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