Hydrodynamic Characteristics Study of Bionic Dolphin Tail Fin Based on Bidirectional Fluid–Structure Interaction Simulation
Using bidirectional fluid–structure interaction technology, the dorsal–ventral motion of the dolphin tail fin was simulated, and the feasibility of the numerical simulation method was validated through underwater motion experiments. This study investigated the effects of structural parameters and mo...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2025-01-01
|
| Series: | Biomimetics |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2313-7673/10/1/59 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832588972578045952 |
|---|---|
| author | Ning Wang Yu Zhang Linghui Peng Wenchuan Zhao |
| author_facet | Ning Wang Yu Zhang Linghui Peng Wenchuan Zhao |
| author_sort | Ning Wang |
| collection | DOAJ |
| description | Using bidirectional fluid–structure interaction technology, the dorsal–ventral motion of the dolphin tail fin was simulated, and the feasibility of the numerical simulation method was validated through underwater motion experiments. This study investigated the effects of structural parameters and motion modes of bionic dolphin tail fins on their propulsion performance. The results show that flexible tail fins can enhance propulsion performance. Compared to equal-thickness flexible tail fins, variable-thickness flexible tail fins that conform to the structural characteristics of real dolphin tail fins exhibit better propulsion performance. Asymmetric motion modes have a certain thrust-enhancing effect, but altering the frequency ratio <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi>F</mi></semantics></math></inline-formula> and amplitude ratio <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi>H</mi></semantics></math></inline-formula> of heaving motion leads to an increase in pitching moment, reducing swimming stability. Additionally, the greater the difference in frequency and amplitude between the up-and-down motions, the larger the pitching moment. The study results provide references for the optimized design and motion control of bionic tail fins. |
| format | Article |
| id | doaj-art-58470a3d225e47d1ba99dd31995791bb |
| institution | Kabale University |
| issn | 2313-7673 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Biomimetics |
| spelling | doaj-art-58470a3d225e47d1ba99dd31995791bb2025-01-24T13:24:46ZengMDPI AGBiomimetics2313-76732025-01-011015910.3390/biomimetics10010059Hydrodynamic Characteristics Study of Bionic Dolphin Tail Fin Based on Bidirectional Fluid–Structure Interaction SimulationNing Wang0Yu Zhang1Linghui Peng2Wenchuan Zhao3College of Mechanical Engineering, Shenyang University of Technology, Shenyang 110870, ChinaCollege of Mechanical Engineering, Shenyang University of Technology, Shenyang 110870, ChinaCollege of Mechanical Engineering, Shenyang University of Technology, Shenyang 110870, ChinaCollege of Mechanical Engineering, Shenyang University of Technology, Shenyang 110870, ChinaUsing bidirectional fluid–structure interaction technology, the dorsal–ventral motion of the dolphin tail fin was simulated, and the feasibility of the numerical simulation method was validated through underwater motion experiments. This study investigated the effects of structural parameters and motion modes of bionic dolphin tail fins on their propulsion performance. The results show that flexible tail fins can enhance propulsion performance. Compared to equal-thickness flexible tail fins, variable-thickness flexible tail fins that conform to the structural characteristics of real dolphin tail fins exhibit better propulsion performance. Asymmetric motion modes have a certain thrust-enhancing effect, but altering the frequency ratio <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi>F</mi></semantics></math></inline-formula> and amplitude ratio <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi>H</mi></semantics></math></inline-formula> of heaving motion leads to an increase in pitching moment, reducing swimming stability. Additionally, the greater the difference in frequency and amplitude between the up-and-down motions, the larger the pitching moment. The study results provide references for the optimized design and motion control of bionic tail fins.https://www.mdpi.com/2313-7673/10/1/59asymmetric motionbionic tail finbidirectional fluid–structure interactionflexibilityhydrodynamic characteristics |
| spellingShingle | Ning Wang Yu Zhang Linghui Peng Wenchuan Zhao Hydrodynamic Characteristics Study of Bionic Dolphin Tail Fin Based on Bidirectional Fluid–Structure Interaction Simulation Biomimetics asymmetric motion bionic tail fin bidirectional fluid–structure interaction flexibility hydrodynamic characteristics |
| title | Hydrodynamic Characteristics Study of Bionic Dolphin Tail Fin Based on Bidirectional Fluid–Structure Interaction Simulation |
| title_full | Hydrodynamic Characteristics Study of Bionic Dolphin Tail Fin Based on Bidirectional Fluid–Structure Interaction Simulation |
| title_fullStr | Hydrodynamic Characteristics Study of Bionic Dolphin Tail Fin Based on Bidirectional Fluid–Structure Interaction Simulation |
| title_full_unstemmed | Hydrodynamic Characteristics Study of Bionic Dolphin Tail Fin Based on Bidirectional Fluid–Structure Interaction Simulation |
| title_short | Hydrodynamic Characteristics Study of Bionic Dolphin Tail Fin Based on Bidirectional Fluid–Structure Interaction Simulation |
| title_sort | hydrodynamic characteristics study of bionic dolphin tail fin based on bidirectional fluid structure interaction simulation |
| topic | asymmetric motion bionic tail fin bidirectional fluid–structure interaction flexibility hydrodynamic characteristics |
| url | https://www.mdpi.com/2313-7673/10/1/59 |
| work_keys_str_mv | AT ningwang hydrodynamiccharacteristicsstudyofbionicdolphintailfinbasedonbidirectionalfluidstructureinteractionsimulation AT yuzhang hydrodynamiccharacteristicsstudyofbionicdolphintailfinbasedonbidirectionalfluidstructureinteractionsimulation AT linghuipeng hydrodynamiccharacteristicsstudyofbionicdolphintailfinbasedonbidirectionalfluidstructureinteractionsimulation AT wenchuanzhao hydrodynamiccharacteristicsstudyofbionicdolphintailfinbasedonbidirectionalfluidstructureinteractionsimulation |