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Open AccessArticle

Fish Response to Turbulence Generated Using Multiple Randomly Actuated Synthetic Jet Arrays

Pacific Northwest National Laboratory, Richland, WA 99352, USA
ANDRITZ HYDRO GmbH, 4031 Linz, Austria
Author to whom correspondence should be addressed.
Water 2019, 11(8), 1715;
Received: 16 May 2019 / Revised: 27 June 2019 / Accepted: 18 July 2019 / Published: 17 August 2019
(This article belongs to the Section Hydraulics)
Hydroelectric power stations generate turbulent flow conditions, which represent a potentially significant hydraulic stressor to fish passing through the turbine system. A test facility has been developed using two randomly actuated synthetic jet arrays (RASJAs) of 25 independent submersible pumps to generate a turbulent flow field for biological dose-response testing. The novel elements of this approach include the ability to control the exposure duration within a test volume due to low mean flow velocity as well as the capacity to scale the turbulence levels as a function of pump capacity. Juvenile Chinook salmon (Oncorhynchus tshawytscha) were subjected to the turbulent flow regime with average turbulence kinetic energy per unit mass of 0.089 m 2 / s 2 for periods of 2 min and 10 min. No significant loss of equilibrium or disorientation was observed after exposure for either duration at the level of turbulence achieved in this prototype. Further scaling of this approach is required to generate a complete dose-response relationship. View Full-Text
Keywords: turbulence; fish stressor; hydropower; turbine; CFD turbulence; fish stressor; hydropower; turbine; CFD
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Harding, S.F.; Mueller, R.P.; Richmond, M.C.; Romero-Gomez, P.; Colotelo, A.H. Fish Response to Turbulence Generated Using Multiple Randomly Actuated Synthetic Jet Arrays. Water 2019, 11, 1715.

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