Dynamic Fluid Structure Interaction of NACRA 17 Foil
The NACRA 17 is a small foiling catamaran that is lifted out of the water by two asymmetric z-foils and two rudder elevators. This paper investigates how foil deflection affects not only foil performance but overall boat behaviour using a numerical Fluid Structure Interaction (FSI) model. The deform...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2024-01-01
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| Series: | Journal of Marine Science and Engineering |
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| Online Access: | https://www.mdpi.com/2077-1312/12/2/237 |
| _version_ | 1797297822881546240 |
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| author | Stig Staghøj Knudsen Laura Marimon Giovannetti Brian Nyvang Legarth Jens Honoré Walther |
| author_facet | Stig Staghøj Knudsen Laura Marimon Giovannetti Brian Nyvang Legarth Jens Honoré Walther |
| author_sort | Stig Staghøj Knudsen |
| collection | DOAJ |
| description | The NACRA 17 is a small foiling catamaran that is lifted out of the water by two asymmetric z-foils and two rudder elevators. This paper investigates how foil deflection affects not only foil performance but overall boat behaviour using a numerical Fluid Structure Interaction (FSI) model. The deformations are solved with a solid model based on the Finite Element Method (FEM) and the flow is solved with a Reynolds Average Navier-Stokes (RANS) based Finite Volume Model (FVM). The models are strongly coupled to allow dynamic FSI simulations. The numerical model is validated by comparing it to an experimental campaign conducted at the RISE SSPA Maritime Center in Sweden.Validation shows reasonable agreement, but the model can only be considered validated for some rake angles. The large deformation of the foils is found to have a profound effect on the performance of the foils and therefore of the overall catamaran. Turbulence transition and boat speed are found to affect foil forces and, in turn, deformation. Dynamic response of the foils during boat motion as exposed to waves is investigated and finally the full boat hydrodynamic is simulated by including both foils and the rudders in various scenarios. |
| first_indexed | 2024-03-07T22:25:56Z |
| format | Article |
| id | doaj.art-a29dcb92a6254074a33dc7cf5810e93a |
| institution | Directory Open Access Journal |
| issn | 2077-1312 |
| language | English |
| last_indexed | 2024-03-07T22:25:56Z |
| publishDate | 2024-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Marine Science and Engineering |
| spelling | doaj.art-a29dcb92a6254074a33dc7cf5810e93a2024-02-23T15:23:04ZengMDPI AGJournal of Marine Science and Engineering2077-13122024-01-0112223710.3390/jmse12020237Dynamic Fluid Structure Interaction of NACRA 17 FoilStig Staghøj Knudsen0Laura Marimon Giovannetti1Brian Nyvang Legarth2Jens Honoré Walther3DTU Construct, Technical University of Denmark, DK-2800 Kongens Lyngby, DenmarkMaritime Department, RISE Research Institutes of Sweden, 40022 Gothenburg, SwedenDTU Construct, Technical University of Denmark, DK-2800 Kongens Lyngby, DenmarkDTU Construct, Technical University of Denmark, DK-2800 Kongens Lyngby, DenmarkThe NACRA 17 is a small foiling catamaran that is lifted out of the water by two asymmetric z-foils and two rudder elevators. This paper investigates how foil deflection affects not only foil performance but overall boat behaviour using a numerical Fluid Structure Interaction (FSI) model. The deformations are solved with a solid model based on the Finite Element Method (FEM) and the flow is solved with a Reynolds Average Navier-Stokes (RANS) based Finite Volume Model (FVM). The models are strongly coupled to allow dynamic FSI simulations. The numerical model is validated by comparing it to an experimental campaign conducted at the RISE SSPA Maritime Center in Sweden.Validation shows reasonable agreement, but the model can only be considered validated for some rake angles. The large deformation of the foils is found to have a profound effect on the performance of the foils and therefore of the overall catamaran. Turbulence transition and boat speed are found to affect foil forces and, in turn, deformation. Dynamic response of the foils during boat motion as exposed to waves is investigated and finally the full boat hydrodynamic is simulated by including both foils and the rudders in various scenarios.https://www.mdpi.com/2077-1312/12/2/237fluid structure interactionhydrofoilcomputational fluid dynamicsfinite element methodNACRA 17 |
| spellingShingle | Stig Staghøj Knudsen Laura Marimon Giovannetti Brian Nyvang Legarth Jens Honoré Walther Dynamic Fluid Structure Interaction of NACRA 17 Foil Journal of Marine Science and Engineering fluid structure interaction hydrofoil computational fluid dynamics finite element method NACRA 17 |
| title | Dynamic Fluid Structure Interaction of NACRA 17 Foil |
| title_full | Dynamic Fluid Structure Interaction of NACRA 17 Foil |
| title_fullStr | Dynamic Fluid Structure Interaction of NACRA 17 Foil |
| title_full_unstemmed | Dynamic Fluid Structure Interaction of NACRA 17 Foil |
| title_short | Dynamic Fluid Structure Interaction of NACRA 17 Foil |
| title_sort | dynamic fluid structure interaction of nacra 17 foil |
| topic | fluid structure interaction hydrofoil computational fluid dynamics finite element method NACRA 17 |
| url | https://www.mdpi.com/2077-1312/12/2/237 |
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