Location

Groningen, The Netherlands

Event Website

http://fishpassage.umass.edu/

Start Date

23-6-2015 11:20 AM

End Date

23-6-2015 11:35 AM

Description

Abstract:

Within the context of designing a fish passage, engineers and planers are provided with numerous standardized constructions methods including the respective assessment criteria to ensure that fish are able to migrate at transverse structures. Due to individual spatial conditions and boundaries, there is a need for special constructions at various locations. Because of lack of design specifications or lack of monitoring experience in the planning stage, the functionality of new systems and construction methods is not proven. Comprehensive functionality tests are therefore to be implemented. At the Baldeney weir an innovative fish lift is currently planned. The required system optimization and the verification of functionality were carried out on behalf of the Ruhrverband in a hybrid model approach, where physical and numerical models as well as ethohydraulic tests were linked. On the basis of a high resolution 3D flow model and a physical model in a 1:3 scale, the flow behaviour within the fish lift and its components was analysed and optimized for different geometrical scenarios taking fish biological limits into account. The optimized geometry of the fish lift system was then placed into a situational similar model with a functional module of the fish lift and studied furthermore by using ethohydraulic tests. With the ethohydraulic tests, all phases of the fish passage (entry, lift passage and exit) could be examined with different fish species at different ages The applied methodology and the effectiveness of the hybrid model approach within the context of planning a fish passage is illustrated by results of the conducted studies for the fish lift system at Baldeney and the fish passage in Geesthacht

Comments

Presenting Author Bio: Frank Seidel is head of the Theodor- Rehbock Hydraulic Laboratory at KIT and has specialised in physical modeling of hydraulic structures and the interaction af geometry and resulting flow field. In the recent years, also ethohydraulic studies were carried out at KIT including projects such as the fish way at geesthacht.

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Jun 23rd, 11:20 AM Jun 23rd, 11:35 AM

Session D4: Hybrid Model Approach for Designing Fish Ways - Example Fish Lift System at Baldeney/Ruhr and Fish Way at Geesthacht /Elbe

Groningen, The Netherlands

Abstract:

Within the context of designing a fish passage, engineers and planers are provided with numerous standardized constructions methods including the respective assessment criteria to ensure that fish are able to migrate at transverse structures. Due to individual spatial conditions and boundaries, there is a need for special constructions at various locations. Because of lack of design specifications or lack of monitoring experience in the planning stage, the functionality of new systems and construction methods is not proven. Comprehensive functionality tests are therefore to be implemented. At the Baldeney weir an innovative fish lift is currently planned. The required system optimization and the verification of functionality were carried out on behalf of the Ruhrverband in a hybrid model approach, where physical and numerical models as well as ethohydraulic tests were linked. On the basis of a high resolution 3D flow model and a physical model in a 1:3 scale, the flow behaviour within the fish lift and its components was analysed and optimized for different geometrical scenarios taking fish biological limits into account. The optimized geometry of the fish lift system was then placed into a situational similar model with a functional module of the fish lift and studied furthermore by using ethohydraulic tests. With the ethohydraulic tests, all phases of the fish passage (entry, lift passage and exit) could be examined with different fish species at different ages The applied methodology and the effectiveness of the hybrid model approach within the context of planning a fish passage is illustrated by results of the conducted studies for the fish lift system at Baldeney and the fish passage in Geesthacht

https://scholarworks.umass.edu/fishpassage_conference/2015/June23/25