Simulating Fish Motion through a Diagonal Reversible Turbine

Utilization of unharnessed hydro-power necessitates designing fish-friendly hydraulic machinery. Towards this effort, the present work investigates various methods for tracking fish motion, ranging from particle tracking methods to accurate, but computationally expensive, body tracking methods, such...

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Bibliographic Details
Published in:Energies (Basel) 2023-01, Vol.16 (2), p.810
Main Authors: Koukouvinis, Phoevos (Foivos), Anagnostopoulos, John
Format: Article
Language:English
Subjects:
Aquatic life
body tracking
collision detection
Computer applications
Discrete element method
Energy storage
Equilibrium flow
Fish
fish-friendly hydropower
Flow velocity
Fluid flow
fluid–structure interaction
Hydraulic equipment
Hydraulic machinery
Hydraulics
Hydroelectric power
Methods
Optimization
Shear stress
Turbines
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Summary:Utilization of unharnessed hydro-power necessitates designing fish-friendly hydraulic machinery. Towards this effort, the present work investigates various methods for tracking fish motion, ranging from particle tracking methods to accurate, but computationally expensive, body tracking methods, such as immersed boundaries and overset meshes. Moreover, a novel uncoupled 6-Degree of Freedom tracking technique is proposed, based on an approximated pressure field around the tracked body of interest, using steady-state flow field data, and including collision detection to walls. The proposed method shows promising results in terms of accuracy, being comparable to the more computationally expensive fully coupled methods at a tiny fraction of the execution time. The new method reveals location of fish–blade impact, as well as statistics of forces, pressure and flow shear that a passing fish is subjected to, both in the normal and reverse operation of the turbine. The low computational cost of the proposed method renders it attractive for optimization studies.
ISSN:1996-1073
1996-1073
DOI:10.3390/en16020810