Author(s): Ianina Kopecki; Matthias Schneider; Katharina Bensing; Boris Lehmann; Andreas Becker; Johannes Ortlepp; Jeffrey Tuhtan
Linked Author(s): Jeffrey Tuhtan, Matthias Schneider, Katharina Bensing, IANINA KOPECKI
Keywords: No keywords
Abstract:
Establishing free fish migration is a key to improve and protect the good ecological status of running waters. Recent studies on downstream migration focus on the micro-movements of fish in the immediate vicinity of or within hydraulic structures, most commonly fish-bypass channels or trash racks. Knowledge gains related to these micro-movements are essential to improve hydraulic structure designs, especially to prevent fish injury and mortality. Accurate fish tracking in related laboratory experiments can therefore provide a large benefit when visualizing animal behavior as well as linking measured and simulated physical parameters to fish movement and behavior. As part of the MeMo project (“Development of a Combined Measuring/Modelling System for the Design, Evaluation und Optimization of Facilities for the Downstream Migration of Fish at Hydropower Plants”), laboratory experiments with different cyprinid species were conducted to investigate fish behavior in front of two angled bar racks (30° and 55°). Together with conventional measurements of the flow using an Acoustic Doppler Velocimeter (ADV), and 2D and 3D hydrodynamic CFD modelling, the bioinspired fish-shaped fish sensory sonde (FSS) are used for the characterization of the environmental conditions upstream of the racks.
Year: 2022