Hydrofoil optimization of underwater glider using Free-Form Deformation and surrogate-based optimization
Hydrofoil is the direct component to generate thrust for underwater glider. It is significant to improve propulsion efficiency of hydrofoil. This study optimizes the shape of a hydrofoil using Free-Form Deformation (FFD) parametric approach and Surrogate-based Optimization (SBO) algorithm. FFD appro...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2018-11-01
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| Series: | International Journal of Naval Architecture and Ocean Engineering |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2092678217301395 |
| _version_ | 1828908970701488128 |
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| author | Xinjing Wang Baowei Song Peng Wang Chunya Sun |
| author_facet | Xinjing Wang Baowei Song Peng Wang Chunya Sun |
| author_sort | Xinjing Wang |
| collection | DOAJ |
| description | Hydrofoil is the direct component to generate thrust for underwater glider. It is significant to improve propulsion efficiency of hydrofoil. This study optimizes the shape of a hydrofoil using Free-Form Deformation (FFD) parametric approach and Surrogate-based Optimization (SBO) algorithm. FFD approach performs a volume outside the hydrofoil and the position changes of control points in the volume parameterize hydrofoil's geometric shape. SBO with adaptive parallel sampling method is regarded as a promising approach for CFD-based optimization. Combination of existing sampling methods is being widely used recently. This paper chooses several well-known methods for combination. Investigations are implemented to figure out how many and which methods should be included and the best combination strategy is provided. As the hydrofoil can be stretched from airfoil, the optimizations are carried out on a 2D airfoil and a 3D hydrofoil, respectively. The lift-drag ratios are compared among optimized and original hydrofoils. Results show that both lift-drag-ratios of optimized hydrofoils improve more than 90%. Besides, this paper preliminarily explores the optimization of hydrofoil with root-tip-ratio. Results show that optimizing 3D hydrofoil directly achieves slightly better results than 2D airfoil. Keywords: Underwater glider, Hydrofoil, Surrogate-based optimization, Adaptive parallel sampling approach |
| first_indexed | 2024-12-13T18:19:16Z |
| format | Article |
| id | doaj.art-9a09037a2e084973a497dd0cd26687b7 |
| institution | Directory Open Access Journal |
| issn | 2092-6782 |
| language | English |
| last_indexed | 2024-12-13T18:19:16Z |
| publishDate | 2018-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | International Journal of Naval Architecture and Ocean Engineering |
| spelling | doaj.art-9a09037a2e084973a497dd0cd26687b72022-12-21T23:35:46ZengElsevierInternational Journal of Naval Architecture and Ocean Engineering2092-67822018-11-01106730740Hydrofoil optimization of underwater glider using Free-Form Deformation and surrogate-based optimizationXinjing Wang0Baowei Song1Peng Wang2Chunya Sun3School of Marine Science and Technology, Northwestern Polytechnical University, Xi'an, 710072, ChinaSchool of Marine Science and Technology, Northwestern Polytechnical University, Xi'an, 710072, ChinaCorresponding author.; School of Marine Science and Technology, Northwestern Polytechnical University, Xi'an, 710072, ChinaSchool of Marine Science and Technology, Northwestern Polytechnical University, Xi'an, 710072, ChinaHydrofoil is the direct component to generate thrust for underwater glider. It is significant to improve propulsion efficiency of hydrofoil. This study optimizes the shape of a hydrofoil using Free-Form Deformation (FFD) parametric approach and Surrogate-based Optimization (SBO) algorithm. FFD approach performs a volume outside the hydrofoil and the position changes of control points in the volume parameterize hydrofoil's geometric shape. SBO with adaptive parallel sampling method is regarded as a promising approach for CFD-based optimization. Combination of existing sampling methods is being widely used recently. This paper chooses several well-known methods for combination. Investigations are implemented to figure out how many and which methods should be included and the best combination strategy is provided. As the hydrofoil can be stretched from airfoil, the optimizations are carried out on a 2D airfoil and a 3D hydrofoil, respectively. The lift-drag ratios are compared among optimized and original hydrofoils. Results show that both lift-drag-ratios of optimized hydrofoils improve more than 90%. Besides, this paper preliminarily explores the optimization of hydrofoil with root-tip-ratio. Results show that optimizing 3D hydrofoil directly achieves slightly better results than 2D airfoil. Keywords: Underwater glider, Hydrofoil, Surrogate-based optimization, Adaptive parallel sampling approachhttp://www.sciencedirect.com/science/article/pii/S2092678217301395 |
| spellingShingle | Xinjing Wang Baowei Song Peng Wang Chunya Sun Hydrofoil optimization of underwater glider using Free-Form Deformation and surrogate-based optimization International Journal of Naval Architecture and Ocean Engineering |
| title | Hydrofoil optimization of underwater glider using Free-Form Deformation and surrogate-based optimization |
| title_full | Hydrofoil optimization of underwater glider using Free-Form Deformation and surrogate-based optimization |
| title_fullStr | Hydrofoil optimization of underwater glider using Free-Form Deformation and surrogate-based optimization |
| title_full_unstemmed | Hydrofoil optimization of underwater glider using Free-Form Deformation and surrogate-based optimization |
| title_short | Hydrofoil optimization of underwater glider using Free-Form Deformation and surrogate-based optimization |
| title_sort | hydrofoil optimization of underwater glider using free form deformation and surrogate based optimization |
| url | http://www.sciencedirect.com/science/article/pii/S2092678217301395 |
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