Schlieren photography on freely flying hawkmoth

Biology Letters
Yun LiuXinyan Deng

Abstract

The aerodynamic force on flying insects results from the vortical flow structures that vary both spatially and temporally throughout flight. Due to these complexities and the inherent difficulties in studying flying insects in a natural setting, a complete picture of the vortical flow has been difficult to obtain experimentally. In this paper, Schlieren, a widely used technique for highspeed flow visualization, was adapted to capture the vortex structures around freely flying hawkmoth (Manduca). Flow features such as leading-edge vortex, trailing-edge vortex, as well as the full vortex system in the wake were visualized directly. Quantification of the flow from the Schlieren images was then obtained by applying a physics-based optical flow method, extending the potential applications of the method to further studies of flying insects.

Associated Datasets

Apr 30, 2018·Stephen Van KootenJesse Roll

References

Jun 18, 1999·Science·M H DickinsonS P Sane
Jun 24, 2005·Nature·Douglas R WarrickDonald R Powers
Mar 1, 2008·Science·F T MuijresA Hedenström
Nov 21, 2013·Scientific Reports·L Christoffer JohanssonAnders Hedenström
Jun 5, 2015·Journal of the Royal Society, Interface·Per HenningssonRichard J Bomphrey

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Citations

Oct 7, 2018·The Journal of Experimental Biology·Megan Matthews, Simon Sponberg
May 28, 2021·The Journal of Experimental Biology·Kajsa WarfvingeAnders Hedenström
Jun 21, 2021·International Journal of Infectious Diseases : IJID : Official Publication of the International Society for Infectious Diseases·Gokhan TanisaliOnder Ergonul

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