Aerodynamic study of superstructures of megayachts

Eirini Trivyza, Evangelos Boulougouris

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

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The paper provides an insight to the general flow characteristics around a yacht’s superstructure, the air-wake felt by the helicopter at the helipad, with respect to the operational limits, and attempts the creation of a database of aerodynamic coefficients, for a range of incident flow angles. The flow is simulated using Star CCM+ solver, with a RANS k-ω SST model, for two different speeds and 5 different incident angles. The flow is observed to be highly rotational, turbulent and with large areas of flow separation. Furthermore, the flow characteristics are magnified as the incident angle increases. It is identified that geometric changes of the superstructure are required to improve the flow and the helicopter operations should be prohibited for the maximum speed, since they fail to comply with the existing regulatory framework. Finally, the human body resilience to wind intensity and turbulence must be introduced into the design process.
Original languageEnglish
Title of host publicationProceedings of the 9th International Workshop on Ship and Marine Hydrodynamics
Place of PublicationGlasgow
PublisherUniversity of Strathclyde
Number of pages9
Publication statusPublished - 26 Aug 2015
EventThe 9th International Workshop on Ship & Marine Hydrodynamics - UK, Glasgow, United Kingdom
Duration: 26 Aug 201528 Aug 2015


ConferenceThe 9th International Workshop on Ship & Marine Hydrodynamics
Abbreviated titleIWSH2015
Country/TerritoryUnited Kingdom
Internet address


  • CFD
  • yacht aerodynamics
  • ship airwake
  • helicopter operations


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