Investigation of the Effect of Leading-Edge Tubercles on Wingsail Performance

Kemali H., Saydam A. Z. , Helvacıoğlu Ş.

JOURNAL OF ETA MARITIME SCIENCE, vol.8, no.1, pp.54-65, 2020 (ESCI) identifier

  • Publication Type: Article / Article
  • Volume: 8 Issue: 1
  • Publication Date: 2020
  • Doi Number: 10.5505/jems.2020.60490
  • Journal Indexes: Emerging Sources Citation Index (ESCI), Directory of Open Access Journals, TR DİZİN (ULAKBİM)
  • Page Numbers: pp.54-65
  • Istanbul Technical University Affiliated: Yes


In this study, effects of leading edge tubercles on a 2013 America's Cup boat wingsail are investigated by viscous Computational Fluid Dynamics (CFD). Adding tubercles on the leading edge of the sail is inspired by humpback whales, which are fast and maneuverable animals along baleen whales thanks to their distinctive flippers. It has been seen from the examined studies that tubercles on the leading edge of the wings delay stall and provide better lift/drag ratio in high angle of attacks (AoA) compared to the plain wing, which might be beneficial for wingsails.