Comparative Study of Effect of Fin Arrangement on Propulsion Performance of Bio-Inspired Underwater Vehicles with Multiple SMA Fins
A biologically inspired underwater vehicle (BIUV) was built using multiple lightweight bio-inspired shape memory alloy (SMA) fins. An unsteady 3D computational fluid dynamics (CFD) method using an unstructured, grid-based, and unsteady Navier-Stokes solver with automatic adaptive re-meshing was adop...
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| Format: | Journal Article |
| Language: | English |
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2017
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| Online Access: | https://hdl.handle.net/10356/85004 http://hdl.handle.net/10220/42057 |
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| author | He, Jian-hui Zhang, Yong-hua Low, Kin-huat |
| author2 | School of Mechanical and Aerospace Engineering |
| author_facet | School of Mechanical and Aerospace Engineering He, Jian-hui Zhang, Yong-hua Low, Kin-huat |
| author_sort | He, Jian-hui |
| collection | NTU |
| description | A biologically inspired underwater vehicle (BIUV) was built using multiple lightweight bio-inspired shape memory alloy (SMA) fins. An unsteady 3D computational fluid dynamics (CFD) method using an unstructured, grid-based, and unsteady Navier-Stokes solver with automatic adaptive re-meshing was adopted to compute unsteady flow. The hydrodynamics of multiple fins at a certain Reynolds number (Re = Uc/v, where U is the upstream flow velocity, c is the chord length, and v is the kinematic viscosity) was studied and simulated using CFD to estimate hydrodynamic forces and characterize flow and vortex patterns created by the fins. Two common arrangements of multiple fins on the BIUV were considered: a posterior fin that is parallel to the anterior fins (case 1) and a posterior fin that is perpendicular to the anterior fins (case 2). First, the influence of the distance between two anterior undulating fins on the propulsion performance of both arrangements of multiple fins on the BIUV was investigated. The effect of the distance between the anterior undulating fins and the posterior oscillating fin was also analysed. The length of the posterior oscillating fin was varied and the fin surface area was held constant (24 mm2) to illustrate the influence of this parameter. Finally, the effect of frequency, amplitude, and wave number of anterior undulating fins on the non-dimensional drag coefficient of the posterior oscillating fin was investigated. Based on the flow structures, the reasons for the different performances of the BIUV are discussed. BIUV performances largely depend on the arrangements of multiple fins and the gap between the fins. Dimension and kinematic parameters also affect the performance of the BIUV. The results provide a physical insight into the understanding of fin interaction in fish or BIUVs that are propelled by multiple fins. |
| first_indexed | 2024-10-01T03:52:07Z |
| format | Journal Article |
| id | ntu-10356/85004 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T03:52:07Z |
| publishDate | 2017 |
| record_format | dspace |
| spelling | ntu-10356/850042023-03-04T17:14:05Z Comparative Study of Effect of Fin Arrangement on Propulsion Performance of Bio-Inspired Underwater Vehicles with Multiple SMA Fins He, Jian-hui Zhang, Yong-hua Low, Kin-huat School of Mechanical and Aerospace Engineering Biologically-inspired Underwater Vehicle (BIUV) Computational Fluid Dynamics (CFD) A biologically inspired underwater vehicle (BIUV) was built using multiple lightweight bio-inspired shape memory alloy (SMA) fins. An unsteady 3D computational fluid dynamics (CFD) method using an unstructured, grid-based, and unsteady Navier-Stokes solver with automatic adaptive re-meshing was adopted to compute unsteady flow. The hydrodynamics of multiple fins at a certain Reynolds number (Re = Uc/v, where U is the upstream flow velocity, c is the chord length, and v is the kinematic viscosity) was studied and simulated using CFD to estimate hydrodynamic forces and characterize flow and vortex patterns created by the fins. Two common arrangements of multiple fins on the BIUV were considered: a posterior fin that is parallel to the anterior fins (case 1) and a posterior fin that is perpendicular to the anterior fins (case 2). First, the influence of the distance between two anterior undulating fins on the propulsion performance of both arrangements of multiple fins on the BIUV was investigated. The effect of the distance between the anterior undulating fins and the posterior oscillating fin was also analysed. The length of the posterior oscillating fin was varied and the fin surface area was held constant (24 mm2) to illustrate the influence of this parameter. Finally, the effect of frequency, amplitude, and wave number of anterior undulating fins on the non-dimensional drag coefficient of the posterior oscillating fin was investigated. Based on the flow structures, the reasons for the different performances of the BIUV are discussed. BIUV performances largely depend on the arrangements of multiple fins and the gap between the fins. Dimension and kinematic parameters also affect the performance of the BIUV. The results provide a physical insight into the understanding of fin interaction in fish or BIUVs that are propelled by multiple fins. Published version 2017-01-19T07:04:17Z 2019-12-06T15:55:19Z 2017-01-19T07:04:17Z 2019-12-06T15:55:19Z 2015 Journal Article He, J., Zhang, Y., & Low, K. (2015). Comparative Study of Effect of Fin Arrangement on Propulsion Performance of Bio-Inspired Underwater Vehicles with Multiple SMA Fins. International Journal of Advanced Robotic Systems, 12(9), 135-. 1729-8806 https://hdl.handle.net/10356/85004 http://hdl.handle.net/10220/42057 10.5772/61392 en International Journal of Advanced Robotic Systems © 2015 Author(s). Licensee InTech. This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. 15 p. application/pdf |
| spellingShingle | Biologically-inspired Underwater Vehicle (BIUV) Computational Fluid Dynamics (CFD) He, Jian-hui Zhang, Yong-hua Low, Kin-huat Comparative Study of Effect of Fin Arrangement on Propulsion Performance of Bio-Inspired Underwater Vehicles with Multiple SMA Fins |
| title | Comparative Study of Effect of Fin Arrangement on Propulsion Performance of Bio-Inspired Underwater Vehicles with Multiple SMA Fins |
| title_full | Comparative Study of Effect of Fin Arrangement on Propulsion Performance of Bio-Inspired Underwater Vehicles with Multiple SMA Fins |
| title_fullStr | Comparative Study of Effect of Fin Arrangement on Propulsion Performance of Bio-Inspired Underwater Vehicles with Multiple SMA Fins |
| title_full_unstemmed | Comparative Study of Effect of Fin Arrangement on Propulsion Performance of Bio-Inspired Underwater Vehicles with Multiple SMA Fins |
| title_short | Comparative Study of Effect of Fin Arrangement on Propulsion Performance of Bio-Inspired Underwater Vehicles with Multiple SMA Fins |
| title_sort | comparative study of effect of fin arrangement on propulsion performance of bio inspired underwater vehicles with multiple sma fins |
| topic | Biologically-inspired Underwater Vehicle (BIUV) Computational Fluid Dynamics (CFD) |
| url | https://hdl.handle.net/10356/85004 http://hdl.handle.net/10220/42057 |
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