Numerical Study of the Fish-like Robot Swimming in Fluid with High Reynolds Number: Immersed Boundary Method
Fish-like robots have been widely used in intelligent surveillance and investigation because of their high swimming efficiency and low traveling noise. Numerical simulations are usually selected to simulate the movement modes and hydrodynamic characteristics of fish-like robots during design and man...
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| Format: | Article |
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MDPI AG
2022-06-01
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| Series: | Actuators |
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| Online Access: | https://www.mdpi.com/2076-0825/11/6/158 |
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| author | Jun Zhang Zhichao Lv Haobo Hua Chunming Zhang Haiyang Yu Yanmei Jiao |
| author_facet | Jun Zhang Zhichao Lv Haobo Hua Chunming Zhang Haiyang Yu Yanmei Jiao |
| author_sort | Jun Zhang |
| collection | DOAJ |
| description | Fish-like robots have been widely used in intelligent surveillance and investigation because of their high swimming efficiency and low traveling noise. Numerical simulations are usually selected to simulate the movement modes and hydrodynamic characteristics of fish-like robots during design and manufacture. However, the body-fitted grid method traditionally utilized in numerical simulations often has difficulty dealing with moving solid boundaries. In this work, the immersed boundary method, superior in handling the moving boundary conditions, is employed to simulate the movement of a fish-like robot swimming in high Reynolds number flows in combination with the RANS turbulence model. The numerical method is first validated using a fluid flowing over a square block, and the corresponding results are in good agreement with the ones reported in reference. Then, the swing of the fish-like robot under three different Reynolds numbers is studied. The lift coefficient and the drag coefficient of the fish-like robot decrease with increasing the Reynolds number. This paper provides remarkable support for future designs and applications of fish-like robots. |
| first_indexed | 2024-03-10T00:43:15Z |
| format | Article |
| id | doaj.art-866413a4b0e24a44b8621f3541114461 |
| institution | Directory Open Access Journal |
| issn | 2076-0825 |
| language | English |
| last_indexed | 2024-03-10T00:43:15Z |
| publishDate | 2022-06-01 |
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| series | Actuators |
| spelling | doaj.art-866413a4b0e24a44b8621f35411144612023-11-23T15:04:07ZengMDPI AGActuators2076-08252022-06-0111615810.3390/act11060158Numerical Study of the Fish-like Robot Swimming in Fluid with High Reynolds Number: Immersed Boundary MethodJun Zhang0Zhichao Lv1Haobo Hua2Chunming Zhang3Haiyang Yu4Yanmei Jiao5College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, ChinaCollege of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, ChinaDepartment of Mathematics, Zhengzhou University of Aeronautics, Zhengzhou 450046, ChinaCollege of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, ChinaCollege of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, ChinaSchool of Physical and Mathematical Sciences, Nanjing Tech University, Nanjing 211816, ChinaFish-like robots have been widely used in intelligent surveillance and investigation because of their high swimming efficiency and low traveling noise. Numerical simulations are usually selected to simulate the movement modes and hydrodynamic characteristics of fish-like robots during design and manufacture. However, the body-fitted grid method traditionally utilized in numerical simulations often has difficulty dealing with moving solid boundaries. In this work, the immersed boundary method, superior in handling the moving boundary conditions, is employed to simulate the movement of a fish-like robot swimming in high Reynolds number flows in combination with the RANS turbulence model. The numerical method is first validated using a fluid flowing over a square block, and the corresponding results are in good agreement with the ones reported in reference. Then, the swing of the fish-like robot under three different Reynolds numbers is studied. The lift coefficient and the drag coefficient of the fish-like robot decrease with increasing the Reynolds number. This paper provides remarkable support for future designs and applications of fish-like robots.https://www.mdpi.com/2076-0825/11/6/158numerical simulationhigh Reynolds numberimmersed boundary methodfish-like robothydrodynamic study |
| spellingShingle | Jun Zhang Zhichao Lv Haobo Hua Chunming Zhang Haiyang Yu Yanmei Jiao Numerical Study of the Fish-like Robot Swimming in Fluid with High Reynolds Number: Immersed Boundary Method Actuators numerical simulation high Reynolds number immersed boundary method fish-like robot hydrodynamic study |
| title | Numerical Study of the Fish-like Robot Swimming in Fluid with High Reynolds Number: Immersed Boundary Method |
| title_full | Numerical Study of the Fish-like Robot Swimming in Fluid with High Reynolds Number: Immersed Boundary Method |
| title_fullStr | Numerical Study of the Fish-like Robot Swimming in Fluid with High Reynolds Number: Immersed Boundary Method |
| title_full_unstemmed | Numerical Study of the Fish-like Robot Swimming in Fluid with High Reynolds Number: Immersed Boundary Method |
| title_short | Numerical Study of the Fish-like Robot Swimming in Fluid with High Reynolds Number: Immersed Boundary Method |
| title_sort | numerical study of the fish like robot swimming in fluid with high reynolds number immersed boundary method |
| topic | numerical simulation high Reynolds number immersed boundary method fish-like robot hydrodynamic study |
| url | https://www.mdpi.com/2076-0825/11/6/158 |
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