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Investigation of the hydrodynamic performance of a novel small moored tidal-current turbine with Banki rotor

Author

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  • Hu, Yuyang
  • Mao, Zhaoyong
  • Li, Bo
  • Cheng, Bo
  • Tian, Wenlong

Abstract

The global energy supply, which heavily depends on fossil fuels, confronts the challenges of resource depletion and environmental pollution, requiring a shift to renewable energy. Tidal-current energy has significant potential but is characterized by intermittency, which restricts its efficiency. To tackle this problem, this study proposes and designs a novel small moored tidal-current energy turbine (SMTET). The SMTET integrates a floating body, Banki rotor, and counterweight to synergistically harness tidal-current and wave energy. Through coupled CFD and mooring dynamics simulations, the system demonstrates: (1) The mooring system induces only deflection (approximately 3°), enabling the turbine to maintain stable underwater operation while preserving hydrodynamic performance; (2) The power coefficient (Cp) peaks at TSR = 0.4, where wave action enhances Cp by 17.5 % (from 0.1680 to 0.1974). This performance improvement confirms the wave-energy enhancement mechanism, primarily achieved through synchronized vortex shedding. These findings provide critical design insights for hybrid tidal-wave energy systems.

Suggested Citation

  • Hu, Yuyang & Mao, Zhaoyong & Li, Bo & Cheng, Bo & Tian, Wenlong, 2026. "Investigation of the hydrodynamic performance of a novel small moored tidal-current turbine with Banki rotor," Renewable Energy, Elsevier, vol. 256(PH).
    • Handle: RePEc:eee:renene:v:256:y:2026:i:ph:s0960148125022621
    DOI: 10.1016/j.renene.2025.124598
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