Vortex Field Visualization in the Near Blade Region of a Vertical-Axis Marine Hydrokinetic Turbine

Key Points

• The aim is to analyze the vortical flow fields in the near-blade region of vertical-axis marine hydrokinetic turbines.
• Utilized time-resolved particle image velocimetry (PIV) for flow analysis.
• Concentrated on the near-blade region of a tandem turbine system.
• Examined dynamic stall and the shedding of the leading-edge vortex (LEV).
• Identified the relationship between dynamic stall and torque generation in high-solidity rotors.
• Visualizations revealed complex wake interactions affecting turbine performance.

Abstract