Hydrodynamic Performances of Planing and Foiling Craft

A special issue of Journal of Marine Science and Engineering (ISSN 2077-1312). This special issue belongs to the section "Coastal Engineering".

Deadline for manuscript submissions: closed (31 January 2022) | Viewed by 7468

Special Issue Editors


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Guest Editor
Department of Industrial Engineering, University of Naples Federico II, 80125 Napoli, Italy
Interests: naval architecture; high-speed craft; hydrodynamics; planing hull; zero emission and full electric propulsion
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Guest Editor
Design Department, Politecnico di Milano, Milan, Italy
Interests: yacht design; composite techniques; composite recycle; smart materials

Special Issue Information

Dear Colleagues,

Hydrodynamic lift has been widely used since low structural weight and light and powerful engines became available in the marine field. Passenger, military, working, and pleasure craft have overcome wave resistance constraints through a dynamic interaction with water flow. This principle results in exciting performances and new applications in the marine field.  Nevertheless, dynamic instability and seakeeping limits require attention for the best exploitation of lift benefits. Hydrofoils after a period of reduced interest have gained new interest due the exciting results of America’s cup and offshore racing sailboats.

The purpose of this Special Issue is to highlight recent developments in the field of high-speed craft that benefit from hydrodynamic lift and publish the most exciting achievements with the aim of free dissemination for research, teaching, and reference purposes.

Prof. Dr. Carlo Bertorello
Prof. Dr. Andrea Ratti
Guest Editors

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Keywords

  • High-speed craft
  • Planing craft
  • Hydrofoils
  • Sailing boats with foils
  • Stability of high-speed craft
  • Seakeeping of high-speed craft
  • CFD
  • EFD

Published Papers (1 paper)

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Research

29 pages, 30035 KiB  
Article
Fluid-Structure Interaction of a Foiling Craft
by Laura Marimon Giovannetti, Ali Farousi, Fabian Ebbesson, Alois Thollot, Alex Shiri and Arash Eslamdoost
J. Mar. Sci. Eng. 2022, 10(3), 372; https://0-doi-org.brum.beds.ac.uk/10.3390/jmse10030372 - 6 Mar 2022
Cited by 3 | Viewed by 6832
Abstract
Hydrofoils are a current hot topic in the marine industry both in high performance sailing and in new passenger transport systems in conjunction with electric propulsion. In the sailing community, the largest impact is seen from the America’s cup, where boats are sailed [...] Read more.
Hydrofoils are a current hot topic in the marine industry both in high performance sailing and in new passenger transport systems in conjunction with electric propulsion. In the sailing community, the largest impact is seen from the America’s cup, where boats are sailed at more than 50 knots (over 100 km/h) with 100% “flying” time. Hydrofoils are also becoming popular in the Olympics, as in the 2024 Olympic games 5 gold medals will be decided on foiling boats/boards. The reason for the increasing popularity of hydrofoils and foiling boats is the recent advances in composite materials, especially in their strength to stiffness ratio. In general, hydrofoils have a very small wetted surface area compared to the wetted surface area of the hull. Therefore, after “take-off” speed, the wetted surface area of the hull, and consequently the resistance of the boat, is reduced considerably. The larger the weight of the boat and crew and the higher the speeds, the greater the loads on the hydrofoils will be. The current research investigates the interaction effects between the fluid and structure of the ZP00682 NACRA 17 Z-foil. The study is carried out both experimentally, in SSPA’s cavitation tunnel, and numerically using a fully coupled viscous solver with a structural analysis tool. The experimental methodology has been used to validate the numerical tools, which in turn are used to reverse engineer the material properties and the internal stiffness of the NACRA 17 foil. The experimental flow speed has been chosen to represent realistic foiling speeds found in the NACRA 17 class, namely 5, 7, and 9 m/s. The forces and the deflection of the Z-foil are investigated, showing a maximum deflection corresponding to 24% of the immersed span. Finally, the effects of leeway and rake angles on the bending properties of the Z-foil are investigated to assess the influence of different angles in sailing strategies, showing that a differential rake set-up might be preferred in search for minimum drag. Full article
(This article belongs to the Special Issue Hydrodynamic Performances of Planing and Foiling Craft)
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