Tiny Insect Jets

Deepthi, Shanmugam; Vengadesan, Sankaranarayanan

Abstract

Tiny insects like dragonfly flaps in an inclined stroke plane, which derives most of its vertical force from the downstroke. Vortex dipole and its induced jet are unique to inclined stroke plane flapping, which transfer a linear momentum downward causing a lift on the flapping wing. This dipole and its characteristics are studied to understand if it can be used to enhance the vertical force during the hovering flight near the ground. The beauty of continuous shedding of the dipoles and the interaction of its recirculating jet with the flapping wing are visualised using the Line Integral Convolution (LIC), vorticity, and pressure contour.

Citation

Deepthi, S., & Vengadesan, S. (2020). Tiny Insect Jets. [video]

• Digital Artefact Type: Video
• Acceptance Date: Nov 22, 2020
• Online Publication Date: Nov 22, 2020
• Publication Date: Nov 22, 2020
• Deposit Date: Jul 11, 2022
• Publicly Available Date: Jul 11, 2022
• Publisher: American Physical Society
• DOI: https://doi.org/10.1103/APS.DFD.2020.GFM.V0063%2CV0063
• Keywords: insects; jet; airflow; inclined stroke plane; flapping wing; Vortex; Vortex Dipole; Line Integral Convolution (LIC), vorticity, pressure contour
• Public URL: https://uwe-repository.worktribe.com/output/9688188
• Additional Information: Gallery of Fluid Motion; https://gfm.aps.org/meetings/dfd-2020/5f5fa1c7199e4c091e67bef5