Aerodynamic analysis of insect-like flapping wings in fan-sweep and parallel motions with the slit effect
In this study, the aerodynamic performance of flapping wings using a parallel motion was investigated and compared with the insect-like “fan-sweep” motion, and the effect of adding a slit to the wings was analyzed. First, numerical simulations were performed to analyze the wing aerodynamics of two f...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2022-06-01
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| Series: | Biomimetic Intelligence and Robotics |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2667379722000122 |
| _version_ | 1811239443644809216 |
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| author | Zenggang Zhu Jingtai Zhao Yuanyuan He Shijun Guo Si Chen Bing Ji |
| author_facet | Zenggang Zhu Jingtai Zhao Yuanyuan He Shijun Guo Si Chen Bing Ji |
| author_sort | Zenggang Zhu |
| collection | DOAJ |
| description | In this study, the aerodynamic performance of flapping wings using a parallel motion was investigated and compared with the insect-like “fan-sweep” motion, and the effect of adding a slit to the wings was analyzed. First, numerical simulations were performed to analyze the wing aerodynamics of two flapping motions with equivalent stroke amplitudes over a range of pitching angles based on computational fluid dynamics (CFD). The simulation results indicated that flapping wings with a rapid and short parallel motion achieved better lift and efficiency than those of the fan-sweep motion while maintaining the same aerodynamic characteristics regarding stall delay and leading-edge vortices. For a parallel motion with a pitching angle of 25° and 100 mm stroke amplitude, the wings generated an average lift of 8.4 gf with a lift-to-drag ratio of 1.06, respectively, which were 1.8% and 26% greater than those of the fan-sweep motion with a corresponding 96° stroke amplitude. This situation was reversed when the pitching angle and stroke amplitude were increased to 45° and 144° for the fan-sweep motion, which was equivalent to the parallel motion with a 150 mm stroke amplitude. The slit effect in the parallel motion was also evaluated, and the CFD results indicated that a slit width of 1 mm (1/50 wing chord) increased the lift of the wing by approximately 27% in the case of the 150 mm stroke amplitude. Further, the slit width slightly influenced the lift and aerodynamic efficiency. |
| first_indexed | 2024-04-12T13:01:31Z |
| format | Article |
| id | doaj.art-43f9d4f34fda4fdfa8fd2da19fa6d892 |
| institution | Directory Open Access Journal |
| issn | 2667-3797 |
| language | English |
| last_indexed | 2024-04-12T13:01:31Z |
| publishDate | 2022-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Biomimetic Intelligence and Robotics |
| spelling | doaj.art-43f9d4f34fda4fdfa8fd2da19fa6d8922022-12-22T03:32:10ZengElsevierBiomimetic Intelligence and Robotics2667-37972022-06-0122100046Aerodynamic analysis of insect-like flapping wings in fan-sweep and parallel motions with the slit effectZenggang Zhu0Jingtai Zhao1Yuanyuan He2Shijun Guo3Si Chen4Bing Ji5School of Control Science and Engineering, Shandong University, Jinan 250002, ChinaSchool of Control Science and Engineering, Shandong University, Jinan 250002, ChinaSchool of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081, ChinaSchool of Aerospace, Transport and Manufacturing, Cranfield University, Cranfield MK43 0AL, UKSchool of Mechanical and Electrical Engineering, Wenzhou University, Wenzhou 325035, ChinaSchool of Control Science and Engineering, Shandong University, Jinan 250002, China; Corresponding author.In this study, the aerodynamic performance of flapping wings using a parallel motion was investigated and compared with the insect-like “fan-sweep” motion, and the effect of adding a slit to the wings was analyzed. First, numerical simulations were performed to analyze the wing aerodynamics of two flapping motions with equivalent stroke amplitudes over a range of pitching angles based on computational fluid dynamics (CFD). The simulation results indicated that flapping wings with a rapid and short parallel motion achieved better lift and efficiency than those of the fan-sweep motion while maintaining the same aerodynamic characteristics regarding stall delay and leading-edge vortices. For a parallel motion with a pitching angle of 25° and 100 mm stroke amplitude, the wings generated an average lift of 8.4 gf with a lift-to-drag ratio of 1.06, respectively, which were 1.8% and 26% greater than those of the fan-sweep motion with a corresponding 96° stroke amplitude. This situation was reversed when the pitching angle and stroke amplitude were increased to 45° and 144° for the fan-sweep motion, which was equivalent to the parallel motion with a 150 mm stroke amplitude. The slit effect in the parallel motion was also evaluated, and the CFD results indicated that a slit width of 1 mm (1/50 wing chord) increased the lift of the wing by approximately 27% in the case of the 150 mm stroke amplitude. Further, the slit width slightly influenced the lift and aerodynamic efficiency.http://www.sciencedirect.com/science/article/pii/S2667379722000122Insect-like flapping wingsAerodynamic efficiencyFan-sweepParallel flapping motionWing slit |
| spellingShingle | Zenggang Zhu Jingtai Zhao Yuanyuan He Shijun Guo Si Chen Bing Ji Aerodynamic analysis of insect-like flapping wings in fan-sweep and parallel motions with the slit effect Biomimetic Intelligence and Robotics Insect-like flapping wings Aerodynamic efficiency Fan-sweep Parallel flapping motion Wing slit |
| title | Aerodynamic analysis of insect-like flapping wings in fan-sweep and parallel motions with the slit effect |
| title_full | Aerodynamic analysis of insect-like flapping wings in fan-sweep and parallel motions with the slit effect |
| title_fullStr | Aerodynamic analysis of insect-like flapping wings in fan-sweep and parallel motions with the slit effect |
| title_full_unstemmed | Aerodynamic analysis of insect-like flapping wings in fan-sweep and parallel motions with the slit effect |
| title_short | Aerodynamic analysis of insect-like flapping wings in fan-sweep and parallel motions with the slit effect |
| title_sort | aerodynamic analysis of insect like flapping wings in fan sweep and parallel motions with the slit effect |
| topic | Insect-like flapping wings Aerodynamic efficiency Fan-sweep Parallel flapping motion Wing slit |
| url | http://www.sciencedirect.com/science/article/pii/S2667379722000122 |
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