Current research investigates vortex dynamics impacting performance in marine hydrokinetic turbines, suggesting improvements.
Vertical-axis hydrokinetic turbines offer a high-power-density solution for marine renewable energy, yet their performance is heavily influenced by complex wake interactions and unsteady aerodynamics. This study utilizes time-resolved particle image velocimetry (PIV) to investigate the vortical flow fields of a tandem turbine system. By focusing on the near-blade region, we elucidate how dynamic stall and the subsequent shedding of the Leading-Edge Vortex (LEV) drive torque generation in high-solidity rotors.
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Hafdaoui et al. (2026) studied this question.
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