Fluid-Structure Interaction of a Foiling Craft
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 1...
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| स्वरूप: | लेख |
| भाषा: | English |
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MDPI AG
2022-03-01
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| श्रृंखला: | Journal of Marine Science and Engineering |
| विषय: | |
| ऑनलाइन पहुंच: | https://www.mdpi.com/2077-1312/10/3/372 |
| _version_ | 1827648222458281984 |
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| author | Laura Marimon Giovannetti Ali Farousi Fabian Ebbesson Alois Thollot Alex Shiri Arash Eslamdoost |
| author_facet | Laura Marimon Giovannetti Ali Farousi Fabian Ebbesson Alois Thollot Alex Shiri Arash Eslamdoost |
| author_sort | Laura Marimon Giovannetti |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-03-09T19:34:18Z |
| format | Article |
| id | doaj.art-1b2a3ea1ca9a4b51a52a9009b65534a7 |
| institution | Directory Open Access Journal |
| issn | 2077-1312 |
| language | English |
| last_indexed | 2024-03-09T19:34:18Z |
| publishDate | 2022-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Marine Science and Engineering |
| spelling | doaj.art-1b2a3ea1ca9a4b51a52a9009b65534a72023-11-24T01:57:37ZengMDPI AGJournal of Marine Science and Engineering2077-13122022-03-0110337210.3390/jmse10030372Fluid-Structure Interaction of a Foiling CraftLaura Marimon Giovannetti0Ali Farousi1Fabian Ebbesson2Alois Thollot3Alex Shiri4Arash Eslamdoost5SSPA Sweden AB, Research Group, 40022 Gothenburg, SwedenMechanics and Maritime Sciences, Division of Marine Technology, Chalmers University of Technology, 40022 Gothenburg, SwedenMechanics and Maritime Sciences, Division of Marine Technology, Chalmers University of Technology, 40022 Gothenburg, SwedenINP ENSEEIHT, 31000 Toulouse, FranceSSPA Sweden AB, Research Group, 40022 Gothenburg, SwedenMechanics and Maritime Sciences, Division of Marine Technology, Chalmers University of Technology, 40022 Gothenburg, SwedenHydrofoils 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.https://www.mdpi.com/2077-1312/10/3/372foilingfluid structure interactionexperimental methodsnumerical simulations |
| spellingShingle | Laura Marimon Giovannetti Ali Farousi Fabian Ebbesson Alois Thollot Alex Shiri Arash Eslamdoost Fluid-Structure Interaction of a Foiling Craft Journal of Marine Science and Engineering foiling fluid structure interaction experimental methods numerical simulations |
| title | Fluid-Structure Interaction of a Foiling Craft |
| title_full | Fluid-Structure Interaction of a Foiling Craft |
| title_fullStr | Fluid-Structure Interaction of a Foiling Craft |
| title_full_unstemmed | Fluid-Structure Interaction of a Foiling Craft |
| title_short | Fluid-Structure Interaction of a Foiling Craft |
| title_sort | fluid structure interaction of a foiling craft |
| topic | foiling fluid structure interaction experimental methods numerical simulations |
| url | https://www.mdpi.com/2077-1312/10/3/372 |
| work_keys_str_mv | AT lauramarimongiovannetti fluidstructureinteractionofafoilingcraft AT alifarousi fluidstructureinteractionofafoilingcraft AT fabianebbesson fluidstructureinteractionofafoilingcraft AT aloisthollot fluidstructureinteractionofafoilingcraft AT alexshiri fluidstructureinteractionofafoilingcraft AT arasheslamdoost fluidstructureinteractionofafoilingcraft |