Event Title

Session B2: Investigations into Fish Friendliness of Ultra Low Head Tidal and River Turbines

Location

Groningen, The Netherlands

Event Website

http://fishpassage.umass.edu/

Start Date

22-6-2015 2:45 PM

End Date

22-6-2015 3:00 PM

Description

Abstract:

The recent guideline regarding fish friendliness, issued by the Dutch government stating a mortality rate of max. 0,1 % per passage, demands innovative turbine solutions. The search for the fish friendly turbine, as outlined in the presentation, covers:

Status: Fish friendliness of low head power station Linne (river Meuse) In the quest for fish friendly turbine alternatives for power station Linne, the fish friendliness of the current turbines is analysed using the model developed at Eindhoven University, coupled to detailed Computational Fluid Dynamics (CFD). With incorporation of the power plant control algorithms, fish mortality is predicted over the entire operating window, with the hydrographical data providing an annual mortality rate. Barotrauma and Shear have not been found threatening mechanisms. Blade strike is identified as the most dangerous mechanism, the model quantifies 12,7 % mortality rate for Eel length 65 cm.

In addition, the effect of improvement of fish friendliness on revenues and costs is made. Model test and testing of innovative turbines During May and June 2015 fish friendliness tests will take place with life fish, to demonstrate fish friendliness of two innovative, scale model tidal turbines. The results will also serve further validation of the model, that will be used to predict fish friendliness of full scale (up to 8 meter diameter) low head turbines. The test set-up is designed in accordance with a general testing protocol (that will be outlined in the presentation). The set-up itself comprised an open, pump activated loop, ultra low head (1 meter @ 1 m3/s) configuration, situated at the river bank of de NederRhine at Nuon/Vattenfall's hydropower station Maurik. In the presentation the test-rig design, general testing protocol and results will be outlined.

Towards full scale fish friendly tidal and river turbines The validated model and life-fish test results are used to predict the fish friendliness of full scale turbines. The work which is ongoing (but will be finished and presented in June), indicates a mortality rate < 0,5 % for an 8 m diameter propeller turbine, which still exceeds the new Dutch Standard, but however is a major improvement. In future, the model will be used to further optimise (reduce) fish mortality of ultra low head tidal and river turbines. Research supported by Essent Power, RWS and the EU Interreg project Pro-Tide.

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Jun 22nd, 2:45 PM Jun 22nd, 3:00 PM

Session B2: Investigations into Fish Friendliness of Ultra Low Head Tidal and River Turbines

Groningen, The Netherlands

Abstract:

The recent guideline regarding fish friendliness, issued by the Dutch government stating a mortality rate of max. 0,1 % per passage, demands innovative turbine solutions. The search for the fish friendly turbine, as outlined in the presentation, covers:

Status: Fish friendliness of low head power station Linne (river Meuse) In the quest for fish friendly turbine alternatives for power station Linne, the fish friendliness of the current turbines is analysed using the model developed at Eindhoven University, coupled to detailed Computational Fluid Dynamics (CFD). With incorporation of the power plant control algorithms, fish mortality is predicted over the entire operating window, with the hydrographical data providing an annual mortality rate. Barotrauma and Shear have not been found threatening mechanisms. Blade strike is identified as the most dangerous mechanism, the model quantifies 12,7 % mortality rate for Eel length 65 cm.

In addition, the effect of improvement of fish friendliness on revenues and costs is made. Model test and testing of innovative turbines During May and June 2015 fish friendliness tests will take place with life fish, to demonstrate fish friendliness of two innovative, scale model tidal turbines. The results will also serve further validation of the model, that will be used to predict fish friendliness of full scale (up to 8 meter diameter) low head turbines. The test set-up is designed in accordance with a general testing protocol (that will be outlined in the presentation). The set-up itself comprised an open, pump activated loop, ultra low head (1 meter @ 1 m3/s) configuration, situated at the river bank of de NederRhine at Nuon/Vattenfall's hydropower station Maurik. In the presentation the test-rig design, general testing protocol and results will be outlined.

Towards full scale fish friendly tidal and river turbines The validated model and life-fish test results are used to predict the fish friendliness of full scale turbines. The work which is ongoing (but will be finished and presented in June), indicates a mortality rate < 0,5 % for an 8 m diameter propeller turbine, which still exceeds the new Dutch Standard, but however is a major improvement. In future, the model will be used to further optimise (reduce) fish mortality of ultra low head tidal and river turbines. Research supported by Essent Power, RWS and the EU Interreg project Pro-Tide.

https://scholarworks.umass.edu/fishpassage_conference/2015/June22/93